盗墓笔记有声小说,yy玄幻小说排行榜完本,我吃西红柿http://awosi.cn/- Py-GCMS微塑料熱裂解色譜解決方案-----輕松入手http://awosi.cn/post/436.html<p><span style="text-wrap: wrap; background-color: #FFFFFF; color: #000000; font-size: 14px; font-family: 微軟雅黑, "Microsoft YaHei";">歐盟新頒布的《飲用水中微塑料檢測(cè)指令》(EU)2024/1441在正文中提到微塑料分析有兩種不同的技術(shù):(1)紅外或拉曼光學(xué)顯微光譜方法,可以識(shí)別單個(gè)顆粒中的聚合物類型,并提供其大小和形狀的信息;(2)熱分析方法,可以識(shí)別樣品中包含的聚合物并量化每種聚合物類型的總質(zhì)量。兩種方案通過(guò)不同的分析技術(shù)實(shí)現(xiàn)對(duì)微塑料不同角度的表征。上期我們介紹了紅外拉曼顯微耦合技術(shù)實(shí)現(xiàn)微塑料檢測(cè),這期我們將從熱分析的角度入手,通過(guò)微塑料裂解產(chǎn)物對(duì)微塑料進(jìn)行定性和定量分析。</span></p><p style="text-align: center;"><span style="text-wrap: wrap; background-color: #FFFFFF; color: #000000; font-size: 14px; font-family: 微軟雅黑, "Microsoft YaHei";"><img class="ue-image" src="http://awosi.cn/zb_users/upload/2024/11/202411071730948734117958.png" title="441ece11-d403-4ea3-b74d-e6d504b4078a.png" alt="441ece11-d403-4ea3-b74d-e6d504b4078a.png" width="555" height="247" style="width: 555px; height: 247px;"/></span></p><p><span style="white-space: pre-wrap; background-color: #FFFFFF; font-family: 微軟雅黑, "Microsoft YaHei"; font-size: 14px; color: #000000;">熱裂解-氣質(zhì)聯(lián)用系統(tǒng)(Py-GCMS)分析水體中微塑料的種類及含量原理:</span></p><p><span style="font-family: 微軟雅黑, "Microsoft YaHei"; font-style: inherit; font-variant-ligatures: inherit; font-variant-caps: inherit; font-weight: inherit; background-color: #FFFFFF; white-space-collapse: preserve;">微塑料在高溫的作用下裂解為聚合物碎片小分子的裂解產(chǎn)物。在特定的溫度下,形成固定的裂解產(chǎn)物,因此可以通過(guò)特征的裂解產(chǎn)物,推導(dǎo)微塑料的聚合物類型獲得定性分析結(jié)果。通過(guò)對(duì)比樣品中特征裂解產(chǎn)物的峰面積與微塑料聚合物的特征裂解產(chǎn)物峰面積獲得定量分析結(jié)果。</span></p><p><span style="white-space-collapse: preserve; scrollbar-width: thin; scrollbar-color: #A0A0A0 #F2F2F2; -webkit-tap-highlight-color: transparent; box-sizing: border-box; font-weight: bolder; font-family: 微軟雅黑, "Microsoft YaHei";">建立Py-GCMS分析水體中微塑料方法</span><span style="white-space-collapse: preserve; font-family: 微軟雅黑, "Microsoft YaHei"; font-style: inherit; font-variant-ligatures: inherit; font-variant-caps: inherit; font-weight: inherit;"> </span></p><p><span style="font-family: 微軟雅黑, "Microsoft YaHei"; font-style: inherit; font-variant-ligatures: inherit; font-variant-caps: inherit; font-weight: inherit; background-color: #FFFFFF; white-space-collapse: preserve;">1 確定裂解產(chǎn)物</span></p><p><span style="font-family: 微軟雅黑, "Microsoft YaHei"; font-style: inherit; font-variant-ligatures: inherit; font-variant-caps: inherit; font-weight: inherit; background-color: #FFFFFF; white-space-collapse: preserve;">通過(guò)單個(gè)聚合物的標(biāo)準(zhǔn)品確定特定溫度下的裂解產(chǎn)物,也可通過(guò)聚合物裂解產(chǎn)物數(shù)據(jù)庫(kù)篩選。</span></p><p><span style="font-family: 微軟雅黑, "Microsoft YaHei"; font-style: inherit; font-variant-ligatures: inherit; font-variant-caps: inherit; font-weight: inherit; background-color: #FFFFFF; white-space-collapse: preserve;">下圖所示ABS特定溫度下的裂解產(chǎn)物譜圖:</span></p><p><span style="font-family: 微軟雅黑, "Microsoft YaHei"; font-style: inherit; font-variant-ligatures: inherit; font-variant-caps: inherit; font-weight: inherit; background-color: #FFFFFF; white-space-collapse: preserve;"><br/></span><br/></p><p><span style="font-family: 微軟雅黑, "Microsoft YaHei"; font-style: inherit; font-variant-ligatures: inherit; font-variant-caps: inherit; font-weight: inherit; background-color: #FFFFFF; white-space-collapse: preserve;"></span></p><p class="ql-align-center" style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; text-align: center; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><img src="http://awosi.cn/zb_users/upload/2024/11/20241107111745_27336.png" style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; border-style: none; max-width: 100%; margin: auto; width: 765px; height: 256px;" width="765" height="256"/></p><p style="text-wrap: wrap;"><span style="font-family: 微軟雅黑, "Microsoft YaHei"; font-style: inherit; font-variant-ligatures: inherit; font-variant-caps: inherit; font-weight: inherit; background-color: #FFFFFF; white-space-collapse: preserve;">2 確定特征裂解產(chǎn)物</span></p><p style="text-wrap: wrap;"><span style="font-family: 微軟雅黑, "Microsoft YaHei"; font-style: inherit; font-variant-ligatures: inherit; font-variant-caps: inherit; font-weight: inherit; background-color: #FFFFFF; white-space-collapse: preserve;">樣品中微塑料可能含有多個(gè)不同類型的聚合物,每種聚合物往往含有多個(gè)裂解產(chǎn)物,如上圖ABS裂解產(chǎn)物圖所示。在選取聚合物特征裂解產(chǎn)物時(shí),既要保證其與其他聚合物的裂解產(chǎn)物無(wú)干擾,又要避免特征裂解產(chǎn)物非來(lái)自于聚合物裂解反應(yīng)。</span></p><p style="text-wrap: wrap;"><span style="font-family: 微軟雅黑, "Microsoft YaHei"; font-style: inherit; font-variant-ligatures: inherit; font-variant-caps: inherit; font-weight: inherit; background-color: #FFFFFF; white-space-collapse: preserve;">基于特定溫度,篩選出12種聚合物特征裂解產(chǎn)物,如下所示。</span></p><p style="text-wrap: wrap;"><br/></p><p class="ql-align-center" style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; text-align: center; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><br style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box;"/></p><p class="ql-align-center" style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; text-align: center; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><img src="http://awosi.cn/zb_users/upload/2024/11/20241107111747_76530.png" style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; border-style: none; max-width: 100%; margin: auto;"/></p><p style="text-wrap: wrap;"><span style="font-family: 微軟雅黑, "Microsoft YaHei"; font-style: inherit; font-variant-ligatures: inherit; font-variant-caps: inherit; font-weight: inherit; background-color: #FFFFFF; white-space-collapse: preserve;">3 分析標(biāo)準(zhǔn)樣品建立校準(zhǔn)曲線</span></p><p style="text-wrap: wrap;"><span style="font-family: 微軟雅黑, "Microsoft YaHei"; font-style: inherit; font-variant-ligatures: inherit; font-variant-caps: inherit; font-weight: inherit; background-color: #FFFFFF; white-space-collapse: preserve;">可以通過(guò)有機(jī)溶劑溶解聚合物獲得微塑料混標(biāo),也可以直接購(gòu)買固體微塑料混標(biāo)。檢測(cè)標(biāo)準(zhǔn)品得到基于外標(biāo)法的校準(zhǔn)曲線。</span></p><p style="text-wrap: wrap;"><span style="font-family: 微軟雅黑, "Microsoft YaHei"; font-style: inherit; font-variant-ligatures: inherit; font-variant-caps: inherit; font-weight: inherit; background-color: #FFFFFF; white-space-collapse: preserve;">4 獲得定性定量結(jié)果</span></p><p style="text-wrap: wrap;"><span style="font-family: 微軟雅黑, "Microsoft YaHei"; font-style: inherit; font-variant-ligatures: inherit; font-variant-caps: inherit; font-weight: inherit; background-color: #FFFFFF; white-space-collapse: preserve;">基于特征裂解產(chǎn)物對(duì)比及校準(zhǔn)曲線,獲得樣品中微塑料的種類及含量信息。</span></p><p style="text-wrap: wrap;"><span style="font-family: 微軟雅黑, "Microsoft YaHei"; font-weight: bolder; background-color: #FFFFFF; white-space-collapse: preserve;">分析方案</span></p><p style="text-wrap: wrap;"><span style="font-family: 微軟雅黑, "Microsoft YaHei"; font-style: inherit; font-variant-ligatures: inherit; font-variant-caps: inherit; font-weight: inherit; background-color: #FFFFFF; white-space-collapse: preserve;">公司基于以上Py-GCMS分析微塑料檢測(cè)方案,提供全流程快速熱裂解微塑料解決方案。方案包含固體標(biāo)準(zhǔn)品、色譜柱套裝及襯管、反吹系統(tǒng)、微塑料數(shù)據(jù)庫(kù)及方法。</span></p><p style="text-wrap: wrap;"><span style="font-family: 微軟雅黑, "Microsoft YaHei"; font-style: inherit; font-variant-ligatures: inherit; font-variant-caps: inherit; font-weight: inherit; background-color: #FFFFFF; text-align: center; white-space-collapse: preserve;">1. 標(biāo)準(zhǔn)品:</span></p><p style="text-wrap: wrap;"><span style="font-family: 微軟雅黑, "Microsoft YaHei"; font-style: inherit; font-variant-ligatures: inherit; font-variant-caps: inherit; font-weight: inherit; background-color: #FFFFFF; white-space-collapse: preserve;">12種微塑料固體混標(biāo),直接稱量分析即可獲得校準(zhǔn)曲線。</span></p><p style="text-wrap: wrap;"><span style="font-family: 微軟雅黑, "Microsoft YaHei"; font-style: inherit; font-variant-ligatures: inherit; font-variant-caps: inherit; font-weight: inherit; background-color: #FFFFFF; white-space-collapse: preserve;">2. 色譜柱套裝及襯管:</span></p><p style="text-wrap: wrap;"><span style="font-family: 微軟雅黑, "Microsoft YaHei"; font-style: inherit; font-variant-ligatures: inherit; font-variant-caps: inherit; font-weight: inherit; background-color: #FFFFFF; white-space-collapse: preserve;">預(yù)柱---1)保護(hù)分析柱免受污染,減少維護(hù)頻率;2)一定的預(yù)分離作用</span></p><p style="text-wrap: wrap;"><span style="font-family: 微軟雅黑, "Microsoft YaHei"; font-style: inherit; font-variant-ligatures: inherit; font-variant-caps: inherit; font-weight: inherit; background-color: #FFFFFF; white-space-collapse: preserve;">分析柱---分離裂解產(chǎn)物</span></p><p style="text-wrap: wrap;"><span style="font-family: 微軟雅黑, "Microsoft YaHei"; font-style: inherit; font-variant-ligatures: inherit; font-variant-caps: inherit; font-weight: inherit; background-color: #FFFFFF; white-space-collapse: preserve;">襯管---預(yù)填充襯管改善裂解產(chǎn)物峰型</span></p><p style="text-wrap: wrap;"><span style="font-family: 微軟雅黑, "Microsoft YaHei"; font-style: inherit; font-variant-ligatures: inherit; font-variant-caps: inherit; font-weight: inherit; background-color: #FFFFFF; white-space-collapse: preserve;">3. 反吹系統(tǒng):</span></p><p style="text-wrap: wrap;"><span style="font-family: 微軟雅黑, "Microsoft YaHei"; font-style: inherit; font-variant-ligatures: inherit; font-variant-caps: inherit; font-weight: inherit; background-color: #FFFFFF; white-space-collapse: preserve;">考慮到聚合物裂解時(shí)會(huì)產(chǎn)生高沸點(diǎn)物質(zhì)對(duì)于色譜柱及質(zhì)譜系統(tǒng)造成一定的污染,通過(guò)反吹系統(tǒng)可以有效減少污染,降低維護(hù)頻率。</span></p><p style="text-wrap: wrap;"><span style="font-family: 微軟雅黑, "Microsoft YaHei"; font-style: inherit; font-variant-ligatures: inherit; font-variant-caps: inherit; font-weight: inherit; background-color: #FFFFFF; white-space-collapse: preserve;">4. 微塑料譜庫(kù)及方法(選配):</span></p><p style="text-wrap: wrap;"><span style="font-family: 微軟雅黑, "Microsoft YaHei"; font-style: inherit; font-variant-ligatures: inherit; font-variant-caps: inherit; font-weight: inherit; background-color: #FFFFFF; white-space-collapse: preserve;">12種微塑料譜庫(kù)---每種微塑料聚合物采用多個(gè)裂解產(chǎn)物定性,軟件直接獲得匹配結(jié)果。</span></p><p style="text-wrap: wrap;"><span style="font-family: 微軟雅黑, "Microsoft YaHei"; font-style: inherit; font-variant-ligatures: inherit; font-variant-caps: inherit; font-weight: inherit; background-color: #FFFFFF; white-space-collapse: preserve;">聚合物裂解產(chǎn)物庫(kù)---建立12種微塑料譜庫(kù)中不包含的聚合物分析方法時(shí)可直接參考裂解產(chǎn)物庫(kù)中的信息。</span></p><p style="text-wrap: wrap;"><span style="font-family: 微軟雅黑, "Microsoft YaHei"; font-style: inherit; font-variant-ligatures: inherit; font-variant-caps: inherit; font-weight: inherit; background-color: #FFFFFF; white-space-collapse: preserve;">聚合物添加劑數(shù)據(jù)庫(kù)--- 對(duì)微塑料中添加劑進(jìn)行分析。</span></p><p style="text-wrap: wrap;"><span style="font-family: 微軟雅黑, "Microsoft YaHei"; font-style: inherit; font-variant-ligatures: inherit; font-variant-caps: inherit; font-weight: inherit; background-color: #FFFFFF; white-space-collapse: preserve;">Py-GCMS是微塑料分析的重要方法,已有國(guó)際標(biāo)準(zhǔn)采用此方法分析水中微塑料ASTM D8401-24 Standard Test Method for Identification of Polymer Type and Quantity of Microplastic Particles and Fibers in Waters with High to Low Suspended Solids Using Pyrolysis-Gas Chromatography/Mass Spectrometry。Py-GCMS微塑料熱裂解方案幫您快速建立微塑料檢測(cè)分析方法,獲得更好的實(shí)驗(yàn)數(shù)據(jù)。</span></p>Thu, 07 Nov 2024 11:02:31 +0800
- 葡萄酒對(duì)健康有益?自釀葡萄酒是否存在安全隱患?氣相色譜儀檢測(cè)分析來(lái)驗(yàn)證http://awosi.cn/post/435.html<p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);"> 傳言稱:經(jīng)常喝葡萄酒對(duì)身體有益。自釀葡萄酒雖然成本低,但是否安全?都說(shuō)飲酒有害健康,喝葡萄酒就沒(méi)危害了嗎?這篇文章,我們就來(lái)說(shuō)說(shuō)關(guān)于自釀葡萄酒的事。</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255); text-align: center;"><img class="ue-image" src="http://awosi.cn/zb_users/upload/2024/11/202411071730947893786825.jpg" title="ce.JPG" alt="ce.JPG"/></p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);"> 自釀葡萄酒是怎么做的?葡萄酒是以新鮮葡萄或葡萄汁為原料,經(jīng)部分或全部發(fā)酵釀造而成的酒精飲品。首先要選擇和處理葡萄,挑選成熟、發(fā)軟、皮薄、有彈性的葡萄果實(shí),用水清洗干凈,但不要太用力,避免弄破果實(shí),清洗后要控干水分。</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);"> 選擇合適的容器進(jìn)行清潔和消毒,如果是玻璃器皿,可以用沸水消毒,晾干水分。</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);"> 將晾干的葡萄揉搓壓碎,碾壓出葡萄汁,因?yàn)槠咸阎械暮芏喑煞值姆植疾⒉痪鶆?,比如酚類物質(zhì)主要存在果皮中,經(jīng)過(guò)碾壓后能均勻分布,讓葡萄酒品質(zhì)更好。但因?yàn)槠咸压:锌辔稑渲咸炎押袉螌幩?,這些成分會(huì)帶來(lái)不愉快的味道,增加苦澀味,所以在處理的時(shí)候不要壓破,并且最好去除掉。</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);"> 將壓好的葡萄汁和果皮果肉裝進(jìn)容器中,加入白糖,攪拌均勻后密封,在 25℃ 的環(huán)境中進(jìn)行 5~7 天的前期發(fā)酵。這是自釀葡萄酒中的關(guān)鍵一步,葡萄成熟后含有大量糖分,果皮表面存在天然葡萄糖酵母(所以清洗葡萄的時(shí)候,不要把白霜洗掉),也可以人工添加釀酒酵母。酵母會(huì)將糖分轉(zhuǎn)化為酒精和二氧化碳,產(chǎn)生大量氣體,所以這期間要注意排氣。</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);"> 前期發(fā)酵結(jié)束后會(huì)停止產(chǎn)氣,這時(shí)候用紗布將葡萄皮和果渣過(guò)濾干凈,密封 10~15 天,然后再倒缸去除底部沉淀物,再次密封。最后就是葡萄酒在容器內(nèi)陳釀(熟成)的過(guò)程,可進(jìn)一步改善風(fēng)味和口感。完成從淡雅到濃香,從清爽到醇厚的轉(zhuǎn)變。</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);"> 自釀葡萄酒存在哪些問(wèn)題?和正規(guī)廠家生產(chǎn)的葡萄酒相比,自釀葡萄酒還是存在一定的健康風(fēng)險(xiǎn)的。主要為以下 4 個(gè)方面:</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);"> <span style="box-sizing: border-box; padding: 0px; margin: 0px; font-family: "Microsoft YaHei", 微軟雅黑; font-weight: 600;"> 1、甲醇含量問(wèn)題</span></p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);"> 甲醇含量超標(biāo)是自釀葡萄酒中最常見(jiàn)的問(wèn)題,釀酒的過(guò)程中會(huì)產(chǎn)生甲醇,這是不可避免的。因?yàn)槠咸阎泻泄z,主要存在于葡萄皮中,果膠在果膠酶或熱能的作用下會(huì)分解出甲醇。甲醇是一種神經(jīng)毒素,攝入過(guò)量會(huì)導(dǎo)致中毒,出現(xiàn)視力障礙和神經(jīng)系統(tǒng)癥狀,嚴(yán)重可導(dǎo)致失明,甚至死亡。葡萄的品種、清潔條件、發(fā)酵溫度、酵母菌種的使用等都會(huì)影響甲醇的含量。特別是葡萄品種影響最大,一般情況下紅葡萄酒>桃紅葡萄酒>白葡萄酒。</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);"> 國(guó)家標(biāo)準(zhǔn)《gb/t 15037—2006葡萄酒》中明確規(guī)定了紅葡萄酒的甲醇含量要 ≤400mg/l,白、桃紅葡萄酒含量則要求 ≤250mg/l。正規(guī)廠家在葡萄酒出廠之前都會(huì)進(jìn)行相關(guān)指標(biāo)的檢測(cè),但家庭自釀葡萄酒不具備檢測(cè)的條件,甲醇含量可能超標(biāo)。</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);"> 2015 年有研究人員收集了 6 種自釀葡萄酒,采用<a href="http://sdryyq.com" target="_self">氣相色譜法</a>對(duì)甲醇的含量進(jìn)行檢測(cè)分析,結(jié)果顯示:6 種自釀葡萄酒中的甲醇含量均有超標(biāo),含量最高的超標(biāo)了 1.6 倍。</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);"> <span style="box-sizing: border-box; padding: 0px; margin: 0px; font-family: "Microsoft YaHei", 微軟雅黑; font-weight: 600;">2、農(nóng)藥殘留</span></p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);"> 在選擇葡萄的時(shí)候,可能會(huì)選到農(nóng)藥殘留較多的果實(shí)作為釀造原料。葡萄在碾碎的時(shí)候,農(nóng)藥會(huì)直接污染到果汁,雖然部分農(nóng)藥在經(jīng)過(guò)發(fā)酵、澄清、過(guò)濾等步驟后殘留量會(huì)降低,但也有一部分農(nóng)藥會(huì)代謝生成毒性更大的有害成分。氣相色譜儀對(duì)此檢測(cè)分析。</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);"> <span style="box-sizing: border-box; padding: 0px; margin: 0px; font-family: "Microsoft YaHei", 微軟雅黑; font-weight: 600;"> 3、衛(wèi)生問(wèn)題</span></p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);"> 自釀葡萄酒環(huán)境衛(wèi)生不好控制,存在衛(wèi)生條件差、雜菌較多的問(wèn)題,用塑料桶裝含有酒精的液體,會(huì)讓鄰苯二甲酸酯滲入液體中,這是一種塑化劑,屬于有毒化合物,國(guó)家規(guī)定其不可在食品中出現(xiàn)。但鄰苯二甲酸酯在酒精中的溶解度遠(yuǎn)大于水,如果用塑料容器裝含有酒精的液體,很容易導(dǎo)致鄰苯二甲酸酯滲入酒中,酒精度越高含量就越高??晌廴臼称罚:】?。塑化劑--鄰苯可以用氣相色譜儀檢測(cè)。</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);"> <span style="box-sizing: border-box; padding: 0px; margin: 0px; font-family: "Microsoft YaHei", 微軟雅黑; font-weight: 600;"> 4、存在爆燃風(fēng)險(xiǎn)</span></p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);"> 葡萄酒在釀造的過(guò)程中會(huì)產(chǎn)生氣體,需要中途做放氣處理。自己釀造的葡萄酒,如果中途打開放氣很容易污染雜菌,如果不放氣則可能會(huì)存在瓶子爆燃的風(fēng)險(xiǎn)。</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);"> 另外,自制葡萄酒的過(guò)程中發(fā)酵溫度也不好控制,會(huì)影響葡萄酒的品質(zhì)。</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);"> 常喝葡萄酒對(duì)身體好?傳言說(shuō)喝葡萄酒對(duì)血管好是因?yàn)橛醒芯糠Q:適當(dāng)喝葡萄酒能升高高密度脂蛋白膽固醇。</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);"> 但《中國(guó)成人血脂異常防治指南(2016 年修訂版)》和《成人高脂血癥食養(yǎng)指南(2023 年版)》中明確提到:雖然中等量飲酒可以升高高密度脂蛋白膽固醇,但即使少量飲酒也會(huì)使高甘油三酯血癥的患者的甘油三酯水平進(jìn)一步升高,不利于心血管健康。</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);"> 還有人說(shuō)葡萄酒中含有白藜蘆醇,屬于多酚類化合物,有抗氧化性。具有保護(hù)細(xì)胞免受損傷、預(yù)防糖尿病、降低癌癥風(fēng)險(xiǎn)、保護(hù)心臟等作用。關(guān)于白藜蘆醇的研究大多都局限于動(dòng)物實(shí)驗(yàn),在人體實(shí)驗(yàn)中的數(shù)據(jù)較少,白藜蘆醇的蕞佳劑量尚未在人體研究中得到確定。</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);"> 某些研究中提到根據(jù)白藜蘆醇對(duì)動(dòng)物的有效劑量推算到人類,對(duì)于人體的有效劑量為 1 克/天。</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);"> 在葡萄酒的生產(chǎn)過(guò)程中,白藜蘆醇的含量會(huì)受到各種因素的影響,包括溫度、ph 值等因素。有數(shù)據(jù)顯示:紅葡萄酒的白藜蘆醇濃度為 0.361~1.972 毫克/升。從這個(gè)數(shù)據(jù)來(lái)看,要想通過(guò)喝紅酒滿足每天攝入 1 克白藜蘆醇,那需要喝掉幾百瓶紅葡萄酒。</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);"> 可以很明確地說(shuō):這個(gè)量非常不健康,也喝不下!再說(shuō)了白藜蘆醇在葡萄、蘋果、藍(lán)莓、李子、花生中都有,沒(méi)必要非得喝葡萄酒。</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);"> 另外,2018 年《柳葉刀》上一項(xiàng)全球酒精健康負(fù)擔(dān)評(píng)估表明:喝酒沒(méi)有安全劑量,一滴酒也不喝健康風(fēng)險(xiǎn)是蕞低的。</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);"> 總結(jié):</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);"> 葡萄酒的確美味,但自釀葡萄酒可能會(huì)存在健康風(fēng)險(xiǎn),需謹(jǐn)慎。對(duì)健康而言,控制飲酒量很重要,蕞好不喝,別為了所謂的“有益健康”因小失大。</p><p><br/></p>Thu, 07 Nov 2024 10:39:16 +0800
- 《質(zhì)子交換膜燃料電池汽車用氫氣 含硫化合物、甲醛和有機(jī)鹵化物的測(cè)定 氣相色譜法 》等標(biāo)準(zhǔn)實(shí)施http://awosi.cn/post/434.html<p>隨著11月的到來(lái),一批新的國(guó)家標(biāo)準(zhǔn)、行業(yè)標(biāo)準(zhǔn)及地方標(biāo)準(zhǔn)開始實(shí)施,涵蓋了電子電器、能源、機(jī)械、金屬鋼鐵、醫(yī)藥衛(wèi)生、石油化工、環(huán)境環(huán)保、農(nóng)林牧漁、造紙印刷備等多個(gè)領(lǐng)域。隨著國(guó)家大力扶持的設(shè)備更新政策,11月份大量的電子電器標(biāo)準(zhǔn)更新。</p><p style="text-align: center;"><img class="ue-image" src="http://awosi.cn/zb_users/upload/2024/11/202411071730946677102236.jpg" title="測(cè).jpg" alt="測(cè).jpg"/></p><p><strong>能源方面:</strong></p><p>《質(zhì)子交換膜燃料電池汽車用氫氣 含硫化合物、甲醛和有機(jī)鹵化物的測(cè)定 氣相色譜法 》、《質(zhì)子交換膜燃料電池汽車用氫氣 氦、氬、氮和烴類的測(cè)定 氣相色譜法 》等系列標(biāo)準(zhǔn)為燃料電池相關(guān)生產(chǎn)提供技術(shù)支撐。除此之外還有風(fēng)能、核能、火力發(fā)電、光伏能源相關(guān)標(biāo)準(zhǔn)將實(shí)施。</p><p><strong>機(jī)械設(shè)備方面:</strong></p><p>在機(jī)械實(shí)施的新標(biāo)準(zhǔn)中《焊接及相關(guān)工藝中煙塵和氣體取樣的實(shí)驗(yàn)室方法 》系列標(biāo)準(zhǔn)將實(shí)施,這也是為了職業(yè)健康提供安全保障。</p><p><strong>鋼鐵金屬方面:</strong></p><p>在鋼鐵金屬新實(shí)施標(biāo)準(zhǔn)中,涉及大量的光譜儀器檢測(cè),如原子發(fā)射光譜、原子吸收光譜、電感耦合等離子體質(zhì)譜。如《鈦鐵 硅、錳、磷、鉻、鋁、鎂、銅、釩、鎳含 量的測(cè)定 電感耦合等離子體原子發(fā)射光譜法 》、《稀土金屬及其氧化物中非稀土雜質(zhì) 化學(xué)分析方法 第12部分:釷、鈾量的測(cè)定 電感耦合等離子體質(zhì)譜法 》等。</p><p><strong>醫(yī)藥衛(wèi)生方面:</strong></p><p>在關(guān)乎我們身心健康方面,質(zhì)譜分析、生命科學(xué)專業(yè)儀器為我們身心健康保駕護(hù)航?!堆?5-羥基維生素D2和D3檢測(cè) 同位素稀釋液相色譜串聯(lián)質(zhì)譜法 》、《血清肌酐參考測(cè)量程序 同位素稀釋液相色譜串聯(lián)質(zhì)譜法 》、《實(shí)時(shí)熒光聚合酶鏈反應(yīng)臨床實(shí)驗(yàn)室應(yīng)用指南 》等。另外《手術(shù)室醫(yī)學(xué)裝備配置標(biāo)準(zhǔn) 》提供了手術(shù)儀器設(shè)備方法與清單。</p><p><strong>石油化工方面:</strong></p><p>《高效液相色譜-原子熒光光譜儀聯(lián)用分析方法通則 》、《化學(xué)蒸氣發(fā)生-原子熒光光譜分析方法通則 》在這兩個(gè)通則中,都是原子熒光光譜與其他儀器的聯(lián)用,拓展了原子熒光的應(yīng)用場(chǎng)景。</p><p>另外,還有大量標(biāo)準(zhǔn)將實(shí)施,為我們的產(chǎn)品質(zhì)量提供保障。</p><p><br/></p>Thu, 31 Oct 2024 10:30:48 +0800
- 面包防腐劑“脫氫乙酸鈉”禁用在即,氣相色譜儀等分析方法來(lái)檢測(cè)http://awosi.cn/post/433.html<p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><span style="scrollbar-width: thin; scrollbar-color: #A0A0A0 #F2F2F2; -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline; font-size: 14px; color: #000000;"> 新版《食品安全國(guó)家標(biāo)準(zhǔn) 食品添加劑使用標(biāo)準(zhǔn)》(GB 2760—2014)將自2025年2月8日實(shí)施,目前進(jìn)入倒計(jì)時(shí)階段。依照新國(guó)標(biāo),脫氫乙酸鈉將在面包、糕點(diǎn)等7類產(chǎn)品中禁用。</span></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><br style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box;"/></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><span style="scrollbar-width: thin; scrollbar-color: #A0A0A0 #F2F2F2; -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline; font-size: 14px; color: #000000;"> 新京報(bào)記者近日對(duì)市場(chǎng)在售的42款面包、蛋糕產(chǎn)品統(tǒng)計(jì)發(fā)現(xiàn),桃李面包、曼可頓、賓堡、京隆等品牌的16款產(chǎn)品已告別脫氫乙酸鈉,取而代之的是丙酸鈣、山梨酸鉀等食品添加劑。這一比例較2021年該國(guó)標(biāo)修訂版征求意見(jiàn)稿出臺(tái)時(shí)有所提升。</span></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><br style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box;"/></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><span style="scrollbar-width: thin; scrollbar-color: #A0A0A0 #F2F2F2; -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline; font-size: 14px; color: #000000;"> 在2025年2月8日之前,處在政策過(guò)渡期的相關(guān)烘焙產(chǎn)品,仍可繼續(xù)使用脫氫乙酸鈉,但烘焙企業(yè)已在尋找或?qū)嵤┟摎湟宜徕c替代方案。桃李面包、馬大姐陸續(xù)對(duì)產(chǎn)品配方進(jìn)行調(diào)整、替換,烘焙品牌“豪士”近期也宣布旗下產(chǎn)品實(shí)現(xiàn)全面去脫氫乙酸鈉,義利食品、盼盼食品等在進(jìn)行配方研究或產(chǎn)品測(cè)試。</span></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><br style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box;"/></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><span style="font-size: 14px; color: #000000;"><span class="ql-size-large" style="scrollbar-width: thin; scrollbar-color: #A0A0A0 #F2F2F2; -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline; font-size: 14px; color: #000000;"> </span><span class="ql-size-large" style="scrollbar-width: thin; scrollbar-color: #A0A0A0 #F2F2F2; -webkit-tap-highlight-color: transparent; box-sizing: border-box; font-weight: bolder; font-size: 14px; color: #000000;">曾使用20余年,將退出烘焙業(yè)</span></span></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><br style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box;"/></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><span style="scrollbar-width: thin; scrollbar-color: #A0A0A0 #F2F2F2; -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline; font-size: 14px; color: #000000;"> 在日常生活中,面包、糕點(diǎn)早已成為基礎(chǔ)性食物。但許多消費(fèi)者或許不知道,長(zhǎng)保質(zhì)期面包、糕點(diǎn)的配料表之中,經(jīng)常會(huì)出現(xiàn)一個(gè)名字——脫氫乙酸鈉。</span></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><br style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box;"/></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><span style="scrollbar-width: thin; scrollbar-color: #A0A0A0 #F2F2F2; -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline; font-size: 14px; color: #000000;"> 資料顯示,脫氫乙酸鈉是繼苯甲酸鈉、尼泊金、山梨酸鉀之后的新一代食品防腐保鮮劑,對(duì)霉菌、酵母菌、細(xì)菌具有很好抑制作用,可延長(zhǎng)食品存放期,避免霉變損失,且不產(chǎn)生異味,在奶油、面包、蛋糕、糕點(diǎn)、蛋黃派、腐乳、醬菜、月餅、餡料等食品中被廣泛應(yīng)用。</span></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><br style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box;"/></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><span style="scrollbar-width: thin; scrollbar-color: #A0A0A0 #F2F2F2; -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline; font-size: 14px; color: #000000;"> 根據(jù)國(guó)家食品安全風(fēng)險(xiǎn)評(píng)估中心2016年12月披露的脫氧乙酸鈉擴(kuò)大使用范圍申請(qǐng)文件,我國(guó)食品添加劑標(biāo)準(zhǔn)化技術(shù)委員會(huì)在1998年年會(huì)上討論并通過(guò)將脫氫乙酸鈉列為食品添加劑的新品種,為食品提供防霉、防腐、保鮮等作用。當(dāng)時(shí)的食品安全評(píng)估結(jié)果認(rèn)為,脫氫乙酸鈉是一種安全的防腐防霉保鮮劑,在水溶液中逐漸離解為乙酸,對(duì)肌體無(wú)害,且防霉作用不受酸堿度和加熱影響。</span></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><br style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box;"/></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><span style="scrollbar-width: thin; scrollbar-color: #A0A0A0 #F2F2F2; -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline; font-size: 14px; color: #000000;"> 一位烘焙業(yè)人士告訴新京報(bào)記者,保質(zhì)期超過(guò)5天的面包、糕點(diǎn)通常會(huì)用到防腐劑,以防長(zhǎng)時(shí)間存放過(guò)程中的霉變。十幾年前,其所在的預(yù)包裝面包企業(yè)主要使用的防腐劑是丙酸鈣,后來(lái)脫氫乙酸鈉的使用范圍逐漸擴(kuò)大。</span></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><br style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box;"/></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><span style="scrollbar-width: thin; scrollbar-color: #A0A0A0 #F2F2F2; -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline; font-size: 14px; color: #000000;"> 2021年3月,伴隨《食品安全國(guó)家標(biāo)準(zhǔn) 食品添加劑使用標(biāo)準(zhǔn)》修訂版征求意見(jiàn)稿發(fā)布,脫氫乙酸鈉在食品防腐劑中的“地位”開始動(dòng)搖。</span></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><br style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box;"/></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><span style="scrollbar-width: thin; scrollbar-color: #A0A0A0 #F2F2F2; -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline; font-size: 14px; color: #000000;"> 舊國(guó)標(biāo)《食品添加劑使用標(biāo)準(zhǔn)》(GB 2760—2014)規(guī)定,脫氫乙酸及其鈉鹽的應(yīng)用范圍包括面包、糕點(diǎn)、焙烤食品餡料及表面用掛漿、淀粉制品、黃油和濃縮黃油、預(yù)制肉制品、熟肉制品、復(fù)合調(diào)味料等。其中,面包、糕點(diǎn)、熟肉制品等最大使用量從0.3g/kg到1g/kg不等。</span></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><br style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box;"/></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><span style="scrollbar-width: thin; scrollbar-color: #A0A0A0 #F2F2F2; -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline; font-size: 14px; color: #000000;"> 與舊國(guó)標(biāo)相比,即將于2025年2月實(shí)施的新國(guó)標(biāo)《食品添加劑使用標(biāo)準(zhǔn)》(GB 2760—2024),刪除了脫氫乙酸及其鈉鹽在黃油和濃縮黃油、淀粉制品、面包、糕點(diǎn)、焙烤食品餡料及表面用掛漿、預(yù)制肉制品、果蔬汁(漿)7類食品中的使用規(guī)定,僅允許在腌漬的蔬菜、腌漬的食用菌和藻類、發(fā)酵豆制品、熟肉制品(肉罐頭類除外)、復(fù)合調(diào)味料5類食品中使用。這意味著脫氫乙酸鈉這一伴隨中國(guó)食品行業(yè)20余年的防腐劑將退出烘焙業(yè)歷史舞臺(tái)。</span></p><p class="ql-align-center" style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; text-align: center; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><img src="http://awosi.cn/zb_users/upload/2024/10/20241029151701_43895.png" style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; border-style: none; max-width: 100%; margin: auto;"/></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><br style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box;"/></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255); text-align: center;"><span style="scrollbar-width: thin; scrollbar-color: #A0A0A0 #F2F2F2; -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline; font-size: 12px;"> <span style="scrollbar-width: thin; scrollbar-color: #A0A0A0 #F2F2F2; -webkit-tap-highlight-color: transparent; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline; font-size: 14px; color: #000000;"> 新舊國(guó)標(biāo)《食品添加劑使用標(biāo)準(zhǔn)》中,脫氫乙酸鈉使用范圍對(duì)比(上方為舊版,下方為新版)。 國(guó)標(biāo)截圖</span></span></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><br style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box;"/></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><span style="scrollbar-width: thin; scrollbar-color: #A0A0A0 #F2F2F2; -webkit-tap-highlight-color: transparent; box-sizing: border-box; font-weight: bolder; font-size: 14px; color: #000000;"> 新標(biāo)準(zhǔn)更有益消費(fèi)者健康</span></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><br style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box;"/></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><span style="scrollbar-width: thin; scrollbar-color: #A0A0A0 #F2F2F2; -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline; font-size: 14px; color: #000000;"> 已被烘焙業(yè)廣泛應(yīng)用的防腐劑脫氫乙酸鈉為何被禁用?</span></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><br style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box;"/></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><span style="scrollbar-width: thin; scrollbar-color: #A0A0A0 #F2F2F2; -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline; font-size: 14px; color: #000000;"> 根據(jù)國(guó)家衛(wèi)生健康委對(duì)《食品添加劑使用標(biāo)準(zhǔn)》修訂版征求意見(jiàn)稿的編制說(shuō)明,早在2016年,該標(biāo)準(zhǔn)就被列入食品安全國(guó)家標(biāo)準(zhǔn)制修訂項(xiàng)目計(jì)劃。</span></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><br style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box;"/></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><span style="scrollbar-width: thin; scrollbar-color: #A0A0A0 #F2F2F2; -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline; font-size: 14px; color: #000000;"> 國(guó)家食品安全風(fēng)險(xiǎn)評(píng)估中心組織對(duì)脫氫乙酸鈉的食品安全風(fēng)險(xiǎn)評(píng)估結(jié)果顯示,結(jié)合相關(guān)行業(yè)脫氫乙酸鈉使用的調(diào)查情況,征求意見(jiàn)稿起草組刪除了脫氫乙酸及其鈉鹽在面包、糕點(diǎn)等7類食品的使用規(guī)定,并調(diào)整了該食品添加劑在腌漬的蔬菜中的最大使用量。調(diào)整上述使用規(guī)定后,評(píng)估中心再次按照修訂后的使用規(guī)定,對(duì)脫氫乙酸及其鈉鹽進(jìn)行食品安全風(fēng)險(xiǎn)評(píng)估,結(jié)果顯示修訂后的標(biāo)準(zhǔn)能夠更好地保護(hù)消費(fèi)者健康。</span></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><br style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box;"/></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><span style="scrollbar-width: thin; scrollbar-color: #A0A0A0 #F2F2F2; -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline; font-size: 14px; color: #000000;"> 實(shí)際上,我國(guó)獲準(zhǔn)使用的食品添加劑名單在不斷更新,《食品添加劑使用標(biāo)準(zhǔn)》已經(jīng)歷經(jīng)數(shù)次修訂??菩攀称放c健康信息交流中心主任鐘凱此前表示,對(duì)一種食品添加劑進(jìn)行重新評(píng)估,一般有兩種原因:一是在安全性上有新的證據(jù)發(fā)現(xiàn),需要重新評(píng)估;二是食品消費(fèi)結(jié)構(gòu)發(fā)生變化,當(dāng)一種食物消費(fèi)量由少變多時(shí),要考慮其中某種食品添加劑累積之后會(huì)不會(huì)超過(guò)安全限值。</span></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><br style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box;"/></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><span style="scrollbar-width: thin; scrollbar-color: #A0A0A0 #F2F2F2; -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline; font-size: 14px; color: #000000;"> 法國(guó)酵母品牌“樂(lè)斯?!惫俜轿⑿殴娞?hào)曾在2021年6月發(fā)文介紹,脫氫乙酸鈉的防腐效果大約是苯甲酸鈉的2倍—10倍。多項(xiàng)研究顯示,長(zhǎng)期攝入脫氫乙酸及其鈉鹽,可能會(huì)引起肝、腎和中樞神經(jīng)系統(tǒng)損傷。隨著對(duì)其危害性的研究增多,美國(guó)、歐盟等國(guó)家和地區(qū)已經(jīng)幾乎放棄在食品中使用脫氫乙酸鈉。</span></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><br style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box;"/></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><span style="scrollbar-width: thin; scrollbar-color: #A0A0A0 #F2F2F2; -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline; font-size: 14px; color: #000000;"> 在我國(guó),脫氫乙酸鈉的使用爭(zhēng)議曾出現(xiàn)在辣條行業(yè)。2018年8月,原湖北省食藥監(jiān)局公布21批次抽檢不合格食品,其中1批次衛(wèi)龍辣條因檢出山梨酸及其鉀鹽、脫氫乙酸及其鈉鹽“上榜”。同年9月,衛(wèi)龍食品發(fā)布聲明稱,因調(diào)味面制品國(guó)標(biāo)尚未出臺(tái),衛(wèi)龍執(zhí)行河南地方標(biāo)準(zhǔn)合法合規(guī)。原湖北省食藥監(jiān)局對(duì)此回應(yīng)稱,河南省地方標(biāo)準(zhǔn)將辣條列為參考“糕點(diǎn)”標(biāo)準(zhǔn),而原國(guó)家食藥監(jiān)總局在2015年將辣條納入“方便食品”實(shí)施許可,因此辣條中不能添加脫氫乙酸及其鈉鹽等防腐劑。</span></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><br style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box;"/></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><span style="scrollbar-width: thin; scrollbar-color: #A0A0A0 #F2F2F2; -webkit-tap-highlight-color: transparent; box-sizing: border-box; font-weight: bolder; font-size: 14px; color: #000000;"> 部分烘焙產(chǎn)品仍在用脫氫乙酸鈉</span></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><br style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box;"/></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><span style="scrollbar-width: thin; scrollbar-color: #A0A0A0 #F2F2F2; -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline; font-size: 14px; color: #000000;"> 距新國(guó)標(biāo)實(shí)施還有不足半年時(shí)間,烘焙產(chǎn)品仍在使用脫氫乙酸鈉的情況受到消費(fèi)者關(guān)注。10月8日,新京報(bào)記者走訪北京地區(qū)部分商超看到,政策過(guò)渡期內(nèi),面包、糕點(diǎn)品類中應(yīng)用脫氫乙酸鈉的現(xiàn)象仍較為普遍,但較2021年該國(guó)標(biāo)修訂版征求意見(jiàn)稿發(fā)布時(shí)已明顯減少。</span><span style="color: #000000; font-size: 14px; font-style: inherit; font-variant-ligatures: inherit; font-variant-caps: inherit; font-weight: inherit;">在記者隨機(jī)統(tǒng)計(jì)的42款面包、糕點(diǎn)中,有16款未使用脫氫乙酸鈉,其中5款來(lái)自桃李面包、4款來(lái)自曼可頓、4款來(lái)自賓堡、3款來(lái)自京隆,使用的食品防腐劑主要是丙酸鈣、山梨酸鉀等。桃李面包、曼可頓多數(shù)產(chǎn)品配料表中,均已找不到脫氫乙酸鈉。賓堡部分產(chǎn)品如多菲角、蘋果派、厚切風(fēng)情吐司面包等仍在使用脫氫乙酸鈉。</span></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><br style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box;"/></p><p class="ql-align-center" style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; text-align: center; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><br style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box;"/></p><p class="ql-align-center" style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; text-align: center; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><img src="http://awosi.cn/zb_users/upload/2024/10/20241029151703_65318.jpg" style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; border-style: none; max-width: 100%; margin: auto;"/></p><p class="ql-align-center" style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; text-align: center; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"></p><p class="ql-align-center" style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; text-align: center; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"></p><p class="ql-align-center" style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; text-align: center; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"></p><p class="ql-align-center" style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; text-align: center; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><span style="scrollbar-width: thin; scrollbar-color: #A0A0A0 #F2F2F2; -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline; font-size: 12px;">部分面包仍在使用脫氫乙酸鈉。 新京報(bào)首席記者 郭鐵 攝</span></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><br style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box;"/></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><span style="scrollbar-width: thin; scrollbar-color: #A0A0A0 #F2F2F2; -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline; font-size: 12px;"> <span style="scrollbar-width: thin; scrollbar-color: #A0A0A0 #F2F2F2; -webkit-tap-highlight-color: transparent; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline; color: #000000; font-size: 14px;">對(duì)于目前仍在使用脫氫乙酸鈉的產(chǎn)品,桃李面包、曼可頓、義利、達(dá)利食品、盼盼、馬大姐等企業(yè)客服均表示,新國(guó)標(biāo)將于2025年2月正式實(shí)施,當(dāng)前產(chǎn)品中使用脫氫乙酸鈉符合食品安全相關(guān)標(biāo)準(zhǔn)。鐘凱也在近期接受媒體采訪時(shí)表示,現(xiàn)階段產(chǎn)品使用脫氫乙酸鈉如果真的有害,不會(huì)給予企業(yè)過(guò)渡期。</span></span></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><br style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box;"/></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><span style="scrollbar-width: thin; scrollbar-color: #A0A0A0 #F2F2F2; -webkit-tap-highlight-color: transparent; box-sizing: border-box; font-weight: bolder; font-size: 14px; color: #000000;"> 禁用后對(duì)烘焙業(yè)影響幾何?</span></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><br style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box;"/></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><span style="scrollbar-width: thin; scrollbar-color: #A0A0A0 #F2F2F2; -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline; font-size: 14px; color: #000000;"> 禁用脫氫乙酸鈉,行業(yè)將受到何種影響?一位大型連鎖烘焙企業(yè)技術(shù)研發(fā)人員告訴新京報(bào)記者,禁用脫氫乙酸鈉主要會(huì)對(duì)生產(chǎn)長(zhǎng)保質(zhì)期產(chǎn)品的公司帶來(lái)影響,“比如預(yù)包裝的面包或餅干,添加脫氫乙酸鈉后可以賣30天,禁用后會(huì)縮短到10天左右。企業(yè)為了保持食品新鮮,物流成本、建廠成本或找代工廠的成本都會(huì)增加。好處是,消費(fèi)者可以吃到效期更短的新鮮產(chǎn)品?!?lt;/span></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><br style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box;"/></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><span style="scrollbar-width: thin; scrollbar-color: #A0A0A0 #F2F2F2; -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline; font-size: 14px; color: #000000;"> 浙江資溪面包有限公司總經(jīng)理鐘濤也向新京報(bào)記者證實(shí),禁用脫氫乙酸鈉“對(duì)生產(chǎn)保質(zhì)期超過(guò)5天的預(yù)包裝面包、糕點(diǎn)等可能會(huì)有較大影響”,不過(guò)對(duì)餅店行業(yè)影響不大。因?yàn)檫B鎖餅店主打現(xiàn)制現(xiàn)烤的新鮮概念,面包貨架期通常在3天左右,因此沒(méi)有添加防腐劑的必要,但不排除餡料等原料帶入。</span></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><span style="scrollbar-width: thin; scrollbar-color: #A0A0A0 #F2F2F2; -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline; font-size: 14px; color: #000000;"></span></p><p style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><strong><span style="font-family: 微軟雅黑, 宋體, Arial, Helvetica, sans-serif; font-size: 14px; color: #000000;"> 食品中脫氫乙酸鈉的檢驗(yàn)方法包括氣相色譜法、液相色譜法、紫外分光光度法等。</span></strong></p><div class="heading_wrap"><h2><span style="font-size: 14px; color: #000000;"> 氣相色譜法</span></h2></div><p><span style="font-size: 14px; color: #000000;"> 氣相色譜法是在GB/T5009.121-2003《食品中脫氫乙酸的測(cè)定》標(biāo)準(zhǔn)方法上進(jìn)行改進(jìn):將樣品酸化后,用乙醚提取脫氫乙酸后濃縮,用氣相色譜(附氫火焰離子化檢測(cè)器)進(jìn)行分離測(cè)定,與標(biāo)準(zhǔn)系列比較定量。如潤(rùn)揚(yáng)儀器的GC-2020/GC-2030氣相色譜儀。</span></p><div class="heading_wrap"><h2><span style="font-size: 14px; color: #000000;"> 液相色譜法</span></h2></div><p><span style="font-size: 14px; color: #000000;"> 液相色譜法是在GB/T23377-2009《食品中脫氫乙酸的測(cè)定高效液相色譜法》標(biāo)準(zhǔn)方法上進(jìn)行改進(jìn):用氫氧化鈉溶液提取試樣中的脫氫乙酸,經(jīng)脫脂、去蛋白處理后,用高效液相色譜紫外檢測(cè)器測(cè)定,與標(biāo)準(zhǔn)系列比較定量。</span></p><div class="heading_wrap"><h2><span style="font-size: 14px; color: #000000;"> 紫外分光光度法</span></h2></div><p><span style="font-size: 14px; color: #000000;"> 紫外分光光度法對(duì)火腿腸中脫氫乙酸鈉的測(cè)定方法進(jìn)行了研究。樣品處理過(guò)程是:稱取絞碎的均勻樣品1.00g于10ml刻度離心管中,加純水約6.00ml充分混勻,放置10.0min,加氫氧化鈉溶液1.0ml,硫酸鋅溶液1.0ml,并用純水定容至刻度,混勻后放置使蛋白質(zhì)沉淀或置于離心機(jī)中以4000r/min的轉(zhuǎn)速離心10.0min,取上清液于紫外分光光度計(jì)上分析。</span></p><p><span style="font-size: 14px; color: #000000;"> 以上方法均能在一定程度上準(zhǔn)確測(cè)定食品中脫氫乙酸鈉的含量,但在實(shí)際操作中應(yīng)根據(jù)具體樣品的特點(diǎn)和實(shí)驗(yàn)室條件選擇較為適合的檢測(cè)方法。</span></p><p class="ql-align-center" style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; text-align: center; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><br/></p>Sat, 26 Oct 2024 15:08:13 +0800
- 知識(shí)分享:如何確定熱裂解色譜分析儀分析結(jié)果的準(zhǔn)確性http://awosi.cn/post/432.html<p class="ql-align-justify" style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; text-align: justify; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><span style="scrollbar-width: thin; scrollbar-color: #A0A0A0 #F2F2F2; -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: 2; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline; font-family: 微軟雅黑, "Microsoft YaHei"; font-size: 14px; color: #000000;">對(duì)于熱裂解色譜分析儀器分析準(zhǔn)確度一般是包含分析結(jié)果的正確程度和重復(fù)程度兩個(gè)方面,也就是說(shuō)包括系統(tǒng)誤差和隨機(jī)誤差的聯(lián)合效應(yīng)。</span></p><p class="ql-align-justify" style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; text-align: justify; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><span style="scrollbar-width: thin; scrollbar-color: #A0A0A0 #F2F2F2; -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: 2; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline; font-family: 微軟雅黑, "Microsoft YaHei"; font-size: 14px; color: #000000;">方法一:平行測(cè)定。</span></p><p class="ql-align-justify" style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; text-align: justify; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><span style="scrollbar-width: thin; scrollbar-color: #A0A0A0 #F2F2F2; -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: 2; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline; font-family: 微軟雅黑, "Microsoft YaHei"; font-size: 14px; color: #000000;">兩份結(jié)果若相差很大,差值超出了允許差范圍,這就表明兩個(gè)結(jié)果中至少有一個(gè)應(yīng)重新分析,兩份結(jié)果若很接近,可取平均值,但不能說(shuō)所得結(jié)果正確無(wú)誤。對(duì)于氣相色譜儀分析,一般稱之為重復(fù)性,在色譜儀鑒定標(biāo)準(zhǔn)中有相關(guān)規(guī)定。</span></p><p class="ql-align-justify" style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; text-align: justify; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><span style="scrollbar-width: thin; scrollbar-color: #A0A0A0 #F2F2F2; -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: 2; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline; font-family: 微軟雅黑, "Microsoft YaHei"; font-size: 14px; color: #000000;">方法二:用標(biāo)樣對(duì)照。</span></p><p class="ql-align-justify" style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; text-align: justify; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><span style="scrollbar-width: thin; scrollbar-color: #A0A0A0 #F2F2F2; -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: 2; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline; font-family: 微軟雅黑, "Microsoft YaHei"; font-size: 14px; color: #000000;">在一批分析中同時(shí)帶一個(gè)標(biāo)準(zhǔn)樣品,如操作無(wú)誤而標(biāo)樣分析結(jié)果與標(biāo)樣的參考值一致,說(shuō)明本批分析結(jié)果沒(méi)有出現(xiàn)明顯的誤差,那么這個(gè)分析結(jié)果基本是認(rèn)可的。但分析試樣的成分應(yīng)與標(biāo)樣接近,否則不能說(shuō)明問(wèn)題。</span></p><p class="ql-align-justify" style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; text-align: justify; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><span style="scrollbar-width: thin; scrollbar-color: #A0A0A0 #F2F2F2; -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: 2; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline; font-family: 微軟雅黑, "Microsoft YaHei"; font-size: 14px; color: #000000;">方法三:用不同的分析方法對(duì)照。</span></p><p class="ql-align-justify" style="scrollbar-width: thin; scrollbar-color: rgb(160, 160, 160) rgb(242, 242, 242); -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-stretch: inherit; font-size: 13px; line-height: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; font-family: "Noto Sans SC", "Microsoft YaHei", simsun, "Helvetica Neue", Arial, Helvetica, sans-serif; vertical-align: baseline; cursor: text; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0; text-align: justify; color: rgb(81, 90, 110); white-space: pre-wrap; background-color: rgb(255, 255, 255);"><span style="scrollbar-width: thin; scrollbar-color: #A0A0A0 #F2F2F2; -webkit-tap-highlight-color: transparent; box-sizing: border-box; margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: 2; font-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; vertical-align: baseline; font-family: 微軟雅黑, "Microsoft YaHei"; font-size: 14px; color: #000000;">這是比較可靠的檢驗(yàn)方法。如用熱裂解氣相色譜儀測(cè)定混凝土硅烷浸漬深度含量的結(jié)果與質(zhì)譜儀的結(jié)果取得了一致,則一般證明此結(jié)果是可靠的,反之,說(shuō)明兩種方法中至少有一種方法的測(cè)定結(jié)果不準(zhǔn)確。</span></p>Thu, 17 Oct 2024 21:22:54 +0800
- 2024世界標(biāo)準(zhǔn)日丨標(biāo)準(zhǔn)化基礎(chǔ)知識(shí)及我國(guó)標(biāo)準(zhǔn)的分類http://awosi.cn/post/431.html<p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);">2024年10月14日是第55屆“世界標(biāo)準(zhǔn)日”,國(guó)際電工委員會(huì)(IEC)、國(guó)際標(biāo)準(zhǔn)化組織(ISO)、國(guó)際電信聯(lián)盟(ITU)將第55屆“世界標(biāo)準(zhǔn)日”的國(guó)際主題確定為“SHARED VISION FOR A BETTER WORLD(美好世界的共同愿景)”。第55屆“世界標(biāo)準(zhǔn)日”的中國(guó)主題確定為“強(qiáng)化標(biāo)準(zhǔn)引領(lǐng) 促進(jìn)高質(zhì)量發(fā)展”。 </p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);">一、世界標(biāo)準(zhǔn)日的來(lái)源?</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);">世界標(biāo)準(zhǔn)日(World Standards Day),是國(guó)際標(biāo)準(zhǔn)化組織(ISO)成立紀(jì)念日。1969年9月國(guó)際標(biāo)準(zhǔn)化組織理事會(huì)發(fā)布決議,決定把每年的10月14日定為世界標(biāo)準(zhǔn)日。1970年10月14日舉行了第一屆世界范圍內(nèi)慶祝世界標(biāo)準(zhǔn)日的活動(dòng)。此后,每年的10月14日,就成為世界各國(guó)標(biāo)準(zhǔn)化工作者開展標(biāo)準(zhǔn)化宣傳,舉行慶?;顒?dòng)的盛大節(jié)日。從第17屆起,世界標(biāo)準(zhǔn)日開始賦予主題。世界標(biāo)準(zhǔn)日的目的是提高對(duì)國(guó)際標(biāo)準(zhǔn)化在世界經(jīng)濟(jì)活動(dòng)中重要性的認(rèn)識(shí),以促進(jìn)國(guó)際標(biāo)準(zhǔn)化工作適應(yīng)世界范圍內(nèi)的商業(yè)、工業(yè)、政府和消費(fèi)者的需要。</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);">二、什么是國(guó)際標(biāo)準(zhǔn)?</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);">國(guó)際標(biāo)準(zhǔn)通常是指三大國(guó)際標(biāo)準(zhǔn)化組織(ISO、IEC、ITU)制定的標(biāo)準(zhǔn),以及經(jīng)ISO確認(rèn)并公布的其他國(guó)際組織制定的標(biāo)準(zhǔn)。</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255); text-align: center;"><img src="http://awosi.cn/zb_users/upload/2024/10/20241020212239_42354.jpg" title="三大國(guó)際標(biāo)準(zhǔn)化組織.png" alt="三大國(guó)際標(biāo)準(zhǔn)化組織.png" style="box-sizing: border-box; padding: 0px; margin: 0px; font-family: "Microsoft YaHei", 微軟雅黑; border: 0px; vertical-align: middle; height: auto; max-width: 720px; max-height: 100%;"/></p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);">三、什么是標(biāo)準(zhǔn)?</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);">根據(jù)GB/T 20000.1-2014《標(biāo)準(zhǔn)化工作指南 第1部分:標(biāo)準(zhǔn)化和相關(guān)活動(dòng)的通用術(shù)語(yǔ)》,標(biāo)準(zhǔn)是指“通過(guò)標(biāo)準(zhǔn)化活動(dòng),按照規(guī)定的程序經(jīng)協(xié)商一致制定,為各種活動(dòng)或其結(jié)果提供規(guī)則、指南或特性,供共同使用和重復(fù)使用的文件?!?lt;/p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);">四、什么是標(biāo)準(zhǔn)化?</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);">根據(jù)GB/T 20000.1-2014《標(biāo)準(zhǔn)化工作指南 第1部分:標(biāo)準(zhǔn)化和相關(guān)活動(dòng)的通用術(shù)語(yǔ)》,標(biāo)準(zhǔn)化是指“為了在既定范圍內(nèi)獲得最佳秩序,促進(jìn)共同效益,對(duì)現(xiàn)實(shí)問(wèn)題或潛在問(wèn)題確立共同使用和重復(fù)使用的條款以及編制、發(fā)布和應(yīng)用文件的活動(dòng)?!?lt;/p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);">五、我國(guó)標(biāo)準(zhǔn)的分類?</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);">2018年1月1日,新修訂的《中華人民共和國(guó)標(biāo)準(zhǔn)化法》正式實(shí)施,明確我國(guó)標(biāo)準(zhǔn)層級(jí)包括國(guó)家標(biāo)準(zhǔn)、行業(yè)標(biāo)準(zhǔn)、地方標(biāo)準(zhǔn)和團(tuán)體標(biāo)準(zhǔn)、企業(yè)標(biāo)準(zhǔn)。國(guó)家標(biāo)準(zhǔn)分為強(qiáng)制性標(biāo)準(zhǔn)、推薦性標(biāo)準(zhǔn),行業(yè)標(biāo)準(zhǔn)、地方標(biāo)準(zhǔn)是推薦性標(biāo)準(zhǔn)。</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);">(一)國(guó)家標(biāo)準(zhǔn)</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);">中華人民共和國(guó)國(guó)家標(biāo)準(zhǔn):是指對(duì)我國(guó)經(jīng)濟(jì)技術(shù)發(fā)展有重大意義,必須在全國(guó)范圍內(nèi)統(tǒng)一的標(biāo)準(zhǔn)。對(duì)需要在全國(guó)范圍內(nèi)統(tǒng)一的技術(shù)要求,應(yīng)當(dāng)制定國(guó)家標(biāo)準(zhǔn)。</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);">國(guó)家標(biāo)準(zhǔn)分為兩大類:強(qiáng)制性國(guó)家標(biāo)準(zhǔn)與推薦性國(guó)家標(biāo)準(zhǔn)。此外,自1998年起,國(guó)家標(biāo)準(zhǔn)體系中新增了“國(guó)家標(biāo)準(zhǔn)化指導(dǎo)性技術(shù)文件”,作為對(duì)國(guó)家標(biāo)準(zhǔn)的有效補(bǔ)充。</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);">國(guó)家標(biāo)準(zhǔn)的代號(hào)如下:</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);">強(qiáng)制性國(guó)家標(biāo)準(zhǔn)代號(hào):GB(即“國(guó)標(biāo)”的拼音縮寫)</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);">推薦性國(guó)家標(biāo)準(zhǔn)代號(hào):GB/T(“T”代表推薦)</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);">國(guó)家標(biāo)準(zhǔn)化指導(dǎo)性技術(shù)文件代號(hào):GB/Z(“Z”代表指導(dǎo))</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);">(二)行業(yè)標(biāo)準(zhǔn)</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);">行業(yè)標(biāo)準(zhǔn)是指沒(méi)有國(guó)家標(biāo)準(zhǔn)而又需要在全國(guó)某個(gè)行業(yè)范圍內(nèi)統(tǒng)一的技術(shù)要求,由國(guó)務(wù)院有關(guān)行政主管部門制定發(fā)布的標(biāo)準(zhǔn)。</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);">行業(yè)標(biāo)準(zhǔn)是對(duì)國(guó)家標(biāo)準(zhǔn)的補(bǔ)充,是在全國(guó)范圍的某一行業(yè)內(nèi)統(tǒng)一的標(biāo)準(zhǔn),每個(gè)行業(yè)的行業(yè)標(biāo)準(zhǔn)均有代號(hào):如農(nóng)業(yè)行業(yè)標(biāo)準(zhǔn)的代號(hào)為“NY/T”,水產(chǎn)行業(yè)標(biāo)準(zhǔn)的代號(hào)為“SC/T”等。行業(yè)標(biāo)準(zhǔn)編號(hào)的格式為“行業(yè)標(biāo)準(zhǔn)代號(hào)+標(biāo)準(zhǔn)順序號(hào)+發(fā)布年號(hào)”,其中標(biāo)準(zhǔn)順序號(hào)表示該標(biāo)準(zhǔn)在本行業(yè)內(nèi)的發(fā)布次序,發(fā)布年號(hào)則代表標(biāo)準(zhǔn)的發(fā)布年份。</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);">(三)地方標(biāo)準(zhǔn)</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);">地方標(biāo)準(zhǔn)是指為滿足地方自然條件、風(fēng)俗習(xí)慣等特殊技術(shù)要求,省級(jí)標(biāo)準(zhǔn)化行政主管部門和經(jīng)其批準(zhǔn)的設(shè)區(qū)的市級(jí)標(biāo)準(zhǔn)化行政主管部門制定發(fā)布的標(biāo)準(zhǔn)。地方標(biāo)準(zhǔn)在本行政區(qū)域內(nèi)適用。在相應(yīng)的國(guó)家標(biāo)準(zhǔn)或行業(yè)標(biāo)準(zhǔn)實(shí)施后,地方標(biāo)準(zhǔn)應(yīng)自行廢止。</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);">地方標(biāo)準(zhǔn)代號(hào)為“DB”加上省、自治區(qū)、直轄市的行政區(qū)劃代碼前兩位,設(shè)區(qū)的市地方標(biāo)準(zhǔn)代號(hào)為“DB”加上設(shè)區(qū)的市行政區(qū)劃代碼前四位。例如海南省地方標(biāo)準(zhǔn)的代碼為DB46/T,??谑械胤綐?biāo)準(zhǔn)的代號(hào)為DB4601/T,三亞市地方標(biāo)準(zhǔn)的代號(hào)為DB4602/T。</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);">(四)團(tuán)體標(biāo)準(zhǔn)</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);">團(tuán)體標(biāo)準(zhǔn)是依法成立的社會(huì)團(tuán)體為滿足市場(chǎng)和創(chuàng)新需要,協(xié)調(diào)相關(guān)市場(chǎng)主體共同制定的標(biāo)準(zhǔn)。</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);">團(tuán)體標(biāo)準(zhǔn)可快速響應(yīng)技術(shù)創(chuàng)新和市場(chǎng)變化對(duì)標(biāo)準(zhǔn)的需求,彌補(bǔ)現(xiàn)有標(biāo)準(zhǔn)空白。團(tuán)體標(biāo)準(zhǔn)編號(hào)依次由團(tuán)體標(biāo)準(zhǔn)代號(hào)(T/)、社會(huì)團(tuán)體代號(hào)、團(tuán)體標(biāo)準(zhǔn)順序號(hào)和年代號(hào)組成。</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);">(五)企業(yè)標(biāo)準(zhǔn)</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);">企業(yè)標(biāo)準(zhǔn)是對(duì)企業(yè)范圍內(nèi)需要協(xié)調(diào)、統(tǒng)一的技術(shù)要求、管理要求和工作要求所制定的標(biāo)準(zhǔn)。</p><p style="box-sizing: border-box; padding: 0px; margin-top: 0px; margin-bottom: 10px; font-family: "Microsoft YaHei"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-size: 16px; color: rgb(51, 51, 51); line-height: 24px; text-wrap: wrap; background-color: rgb(255, 255, 255);">國(guó)家支持在重要行業(yè)、戰(zhàn)略性新興產(chǎn)業(yè)、關(guān)鍵共性技術(shù)等領(lǐng)域利用自主創(chuàng)新技術(shù)制定團(tuán)體標(biāo)準(zhǔn)、企業(yè)標(biāo)準(zhǔn)。</p><p><br/></p>Thu, 17 Oct 2024 21:14:30 +0800
- 知識(shí)分享:這些液相色譜儀的不當(dāng)操作應(yīng)避免http://awosi.cn/post/430.html<p>液相色譜儀已經(jīng)成為實(shí)驗(yàn)室常配精密分析儀器,在日常的<span class="">液相色譜儀</span>實(shí)驗(yàn)操作過(guò)程中,我們經(jīng)常會(huì)因?yàn)閼卸?、趕進(jìn)度等原因,會(huì)產(chǎn)生一些不正確的操作我們應(yīng)予以避免:</p><p>1.使用緩沖鹽流動(dòng)相前,不先用高比例水相過(guò)渡色譜柱。</p><p>2.使用緩沖鹽做流動(dòng)相,梯度后面有機(jī)相比例過(guò)高導(dǎo)致鹽析。</p><p>3.色譜柱用完緩沖鹽不沖洗。</p><p>4.液相系統(tǒng)中的緩沖鹽不及時(shí)沖洗置換。</p><p>5.色譜柱從儀器上取下來(lái),不封堵頭。</p><p>6.流動(dòng)相水相不定時(shí)更換(尤其在夏天,緩沖鹽更容易滋生細(xì)菌)。</p><p>7.流動(dòng)相標(biāo)簽內(nèi)容不更新。</p><p>8.更換流動(dòng)相時(shí)不注意是否互溶。</p><p>9.儀器使用記錄不及時(shí)更新。</p><p>10.高濃度緩沖鹽流動(dòng)相不過(guò)濾(基線噪聲大)。</p><p>11.樣品配制,不用天平稱量,直接挖一點(diǎn)溶解。</p><p>12.復(fù)雜的樣品溶解后不過(guò)濾直接進(jìn)樣。</p><p>13.流動(dòng)相配制,不用量筒量取,直接用溶劑瓶上的刻度。</p><p>14.色譜柱平衡時(shí)間不夠,導(dǎo)致出峰異常或重現(xiàn)性差。</p><p>15.序列排完忘記設(shè)置關(guān)機(jī)或待機(jī)程序。</p><p>16.排序列沒(méi)有計(jì)算流動(dòng)相的用量,導(dǎo)致流動(dòng)相不足走空。</p><p>17.不注意觀察廢液瓶中廢液量,過(guò)夜排樣,導(dǎo)致廢液溢出。</p><p><br/></p>Thu, 10 Oct 2024 11:54:54 +0800
- 最全面的26種儀器分析的原理及譜圖方法大全http://awosi.cn/post/429.html<p style="text-align: right;"><br/></p><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: auto;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-image: linear-gradient(90deg, rgb(74, 93, 138) 13%, rgb(111, 125, 147) 88%);min-width: 5%;height: auto;padding: 1px 14px;border-style: solid;border-width: 5px;border-color: rgba(74, 93, 138, 0.5);box-shadow: rgba(74, 93, 138, 0.17) 5px 5px 0px 0px;"><section style="font-size: 18px;text-align: justify;color: rgb(250, 254, 255);"><p style="text-wrap: wrap;"><strong>1 紫外吸收光譜UV</strong></p></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;border-style: solid;border-width: 1px;border-color: rgba(74, 93, 138, 0.5);padding: 5px;"><section style="justify-content: flex-start;display: flex;flex-flow: row;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-color: rgba(74, 93, 138, 0.07);padding: 18px;"><section style="text-align: justify;line-height: 1.8;letter-spacing: 1.8px;"><p style="text-wrap: wrap;"><strong>分析原理:</strong>吸收紫外光能量,引起分子中電子能級(jí)的躍遷。</p><p style="text-wrap: wrap;"><strong>譜圖的表示方法:</strong>相對(duì)吸收光能量隨吸收光波長(zhǎng)的變化。</p><p style="text-wrap: wrap;"><strong>提供的信息:</strong>吸收峰的位置、強(qiáng)度和形狀,提供分子中不同電子結(jié)構(gòu)的信息。</p></section></section></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: auto;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-image: linear-gradient(90deg, rgb(74, 93, 138) 13%, rgb(111, 125, 147) 88%);min-width: 5%;height: auto;padding: 1px 14px;border-style: solid;border-width: 5px;border-color: rgba(74, 93, 138, 0.5);box-shadow: rgba(74, 93, 138, 0.17) 5px 5px 0px 0px;"><section style="font-size: 18px;text-align: justify;color: rgb(250, 254, 255);"><p style="text-wrap: wrap;"><strong>2 熒光光譜法FS</strong></p></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;border-style: solid;border-width: 1px;border-color: rgba(74, 93, 138, 0.5);padding: 5px;"><section style="justify-content: flex-start;display: flex;flex-flow: row;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-color: rgba(74, 93, 138, 0.07);padding: 18px;"><section style="text-align: justify;line-height: 1.8;letter-spacing: 1.8px;"><p style="text-wrap: wrap;"><strong>分析原理:</strong>被電磁輻射激發(fā)后,從最低單線激發(fā)態(tài)回到單線基態(tài),發(fā)射熒光。</p><p style="text-wrap: wrap;"><strong>譜圖的表示方法:</strong>發(fā)射的熒光能量隨光波長(zhǎng)的變化。</p><p style="text-wrap: wrap;"><strong>提供的信息:</strong>熒光效率和壽命,提供分子中不同電子結(jié)構(gòu)的信息。</p></section></section></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: auto;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-image: linear-gradient(90deg, rgb(74, 93, 138) 13%, rgb(111, 125, 147) 88%);min-width: 5%;height: auto;padding: 1px 14px;border-style: solid;border-width: 5px;border-color: rgba(74, 93, 138, 0.5);box-shadow: rgba(74, 93, 138, 0.17) 5px 5px 0px 0px;"><section style="font-size: 18px;text-align: justify;color: rgb(250, 254, 255);"><p style="text-wrap: wrap;"><strong>3 紅外吸收光譜法IR</strong></p></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;border-style: solid;border-width: 1px;border-color: rgba(74, 93, 138, 0.5);padding: 5px;"><section style="justify-content: flex-start;display: flex;flex-flow: row;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-color: rgba(74, 93, 138, 0.07);padding: 18px;"><section style="text-align: justify;line-height: 1.8;letter-spacing: 1.8px;"><p style="text-wrap: wrap;"><strong>分析原理:</strong>吸收紅外光能量,引起具有偶極矩變化的分子的振動(dòng)、轉(zhuǎn)動(dòng)能級(jí)躍遷。</p><p style="text-wrap: wrap;"><strong>譜圖的表示方法:</strong>相對(duì)透射光能量隨透射光頻率變化。</p><p style="text-wrap: wrap;"><strong>提供的信息:</strong>峰的位置、強(qiáng)度和形狀,提供功能團(tuán)或化學(xué)鍵的特征振動(dòng)頻率。</p></section></section></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: auto;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-image: linear-gradient(90deg, rgb(74, 93, 138) 13%, rgb(111, 125, 147) 88%);min-width: 5%;height: auto;padding: 1px 14px;border-style: solid;border-width: 5px;border-color: rgba(74, 93, 138, 0.5);box-shadow: rgba(74, 93, 138, 0.17) 5px 5px 0px 0px;"><section style="font-size: 18px;text-align: justify;color: rgb(250, 254, 255);"><p style="text-wrap: wrap;"><strong>4 拉曼光譜法Ram</strong></p></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;border-style: solid;border-width: 1px;border-color: rgba(74, 93, 138, 0.5);padding: 5px;"><section style="justify-content: flex-start;display: flex;flex-flow: row;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-color: rgba(74, 93, 138, 0.07);padding: 18px;"><section style="text-align: justify;line-height: 1.8;letter-spacing: 1.8px;"><p style="text-wrap: wrap;"><strong>分析原理:</strong>吸收光能后,引起具有極化率變化的分子振動(dòng),產(chǎn)生拉曼散射。</p><p style="text-wrap: wrap;"><strong>譜圖的表示方法:</strong>散射光能量隨拉曼位移的變化。</p><p style="text-wrap: wrap;"><strong>提供的信息:</strong>峰的位置、強(qiáng)度和形狀,提供功能團(tuán)或化學(xué)鍵的特征振動(dòng)頻率。</p></section></section></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: auto;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-image: linear-gradient(90deg, rgb(74, 93, 138) 13%, rgb(111, 125, 147) 88%);min-width: 5%;height: auto;padding: 1px 14px;border-style: solid;border-width: 5px;border-color: rgba(74, 93, 138, 0.5);box-shadow: rgba(74, 93, 138, 0.17) 5px 5px 0px 0px;"><section style="font-size: 18px;text-align: justify;color: rgb(250, 254, 255);"><p style="text-wrap: wrap;"><strong>5 核磁共振波譜法NMR</strong></p></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;border-style: solid;border-width: 1px;border-color: rgba(74, 93, 138, 0.5);padding: 5px;"><section style="justify-content: flex-start;display: flex;flex-flow: row;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-color: rgba(74, 93, 138, 0.07);padding: 18px;"><section style="text-align: justify;line-height: 1.8;letter-spacing: 1.8px;"><p style="text-wrap: wrap;"><strong>分析原理:</strong>在外磁場(chǎng)中,具有核磁矩的原子核,吸收射頻能量,產(chǎn)生核自旋能級(jí)的躍遷。</p><p style="text-wrap: wrap;"><strong>譜圖的表示方法:</strong>吸收光能量隨化學(xué)位移的變化。</p><p style="text-wrap: wrap;"><strong>提供的信息:</strong>峰的化學(xué)位移、強(qiáng)度、裂分?jǐn)?shù)和偶合常數(shù),提供核的數(shù)目、所處化學(xué)環(huán)境和幾何構(gòu)型的信息。</p></section></section></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: auto;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-image: linear-gradient(90deg, rgb(74, 93, 138) 13%, rgb(111, 125, 147) 88%);min-width: 5%;height: auto;padding: 1px 14px;border-style: solid;border-width: 5px;border-color: rgba(74, 93, 138, 0.5);box-shadow: rgba(74, 93, 138, 0.17) 5px 5px 0px 0px;"><section style="font-size: 18px;text-align: justify;color: rgb(250, 254, 255);"><p style="text-wrap: wrap;"><strong>6 電子順磁共振波譜法ESR</strong></p></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;border-style: solid;border-width: 1px;border-color: rgba(74, 93, 138, 0.5);padding: 5px;"><section style="justify-content: flex-start;display: flex;flex-flow: row;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-color: rgba(74, 93, 138, 0.07);padding: 18px;"><section style="text-align: justify;line-height: 1.8;letter-spacing: 1.8px;"><p style="text-wrap: wrap;"><strong>分析原理:</strong>在外磁場(chǎng)中,分子中未成對(duì)電子吸收射頻能量,產(chǎn)生電子自旋能級(jí)躍遷。</p><p style="text-wrap: wrap;"><strong>譜圖的表示方法:</strong>吸收光能量或微分能量隨磁場(chǎng)強(qiáng)度變化。</p><p style="text-wrap: wrap;"><strong>提供的信息:</strong>譜線位置、強(qiáng)度、裂分?jǐn)?shù)目和超精細(xì)分裂常數(shù),提供未成對(duì)電子密度、分子鍵特性及幾何構(gòu)型信息。</p></section></section></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: auto;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-image: linear-gradient(90deg, rgb(74, 93, 138) 13%, rgb(111, 125, 147) 88%);min-width: 5%;height: auto;padding: 1px 14px;border-style: solid;border-width: 5px;border-color: rgba(74, 93, 138, 0.5);box-shadow: rgba(74, 93, 138, 0.17) 5px 5px 0px 0px;"><section style="font-size: 18px;text-align: justify;color: rgb(250, 254, 255);"><p style="text-wrap: wrap;"><strong>7 質(zhì)譜分析法MS</strong></p></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;border-style: solid;border-width: 1px;border-color: rgba(74, 93, 138, 0.5);padding: 5px;"><section style="justify-content: flex-start;display: flex;flex-flow: row;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-color: rgba(74, 93, 138, 0.07);padding: 18px;"><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;line-height: 0;"></section><section style="text-align: justify;line-height: 1.8;letter-spacing: 1.8px;"><p style="text-wrap: wrap;"><strong>分析原理:</strong>分子在真空中被電子轟擊,形成離子,通過(guò)電磁場(chǎng)按不同m/e分離。</p><p style="text-wrap: wrap;"><strong>譜圖的表示方法:</strong>以棒圖形式表示離子的相對(duì)豐度隨m/e的變化。</p><p style="text-wrap: wrap;"><strong>提供的信息:</strong>分子離子及碎片離子的質(zhì)量數(shù)及其相對(duì)豐度,提供分子量,元素組成及結(jié)構(gòu)的信息。</p></section></section></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: auto;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-image: linear-gradient(90deg, rgb(74, 93, 138) 13%, rgb(111, 125, 147) 88%);min-width: 5%;height: auto;padding: 1px 14px;border-style: solid;border-width: 5px;border-color: rgba(74, 93, 138, 0.5);box-shadow: rgba(74, 93, 138, 0.17) 5px 5px 0px 0px;"><section style="font-size: 18px;text-align: justify;color: rgb(250, 254, 255);"><p style="text-wrap: wrap;"><strong>8 氣相色譜法GC</strong></p></section></section></section><p style="text-align: center;"><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;border-style: solid;border-width: 1px;border-color: rgba(74, 93, 138, 0.5);padding: 5px;"><section style="justify-content: flex-start;display: flex;flex-flow: row;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-color: rgba(74, 93, 138, 0.07);padding: 18px;"><section style="text-align: justify;line-height: 1.8;letter-spacing: 1.8px;"><p style="text-wrap: wrap;"><strong><img src="http://awosi.cn/zb_users/upload/2024/10/202410201729431508450887.jpg" alt="sep.JPG"/></strong></p><p style="text-wrap: wrap;"><strong>分析原理:</strong>樣品中各組分在流動(dòng)相和固定相之間,由于分配系數(shù)不同而分離。</p><p style="text-wrap: wrap;"><strong>譜圖的表示方法:</strong>柱后流出物濃度隨保留值的變化。</p><p style="text-wrap: wrap;"><strong>提供的信息:</strong>峰的保留值與組分熱力學(xué)參數(shù)有關(guān),是定性依據(jù),峰面積與組分含量有關(guān)。</p></section></section></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: auto;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-image: linear-gradient(90deg, rgb(74, 93, 138) 13%, rgb(111, 125, 147) 88%);min-width: 5%;height: auto;padding: 1px 14px;border-style: solid;border-width: 5px;border-color: rgba(74, 93, 138, 0.5);box-shadow: rgba(74, 93, 138, 0.17) 5px 5px 0px 0px;"><section style="font-size: 18px;text-align: justify;color: rgb(250, 254, 255);"><p style="text-wrap: wrap;"><strong>9 反氣相色譜法IGC </strong></p></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;border-style: solid;border-width: 1px;border-color: rgba(74, 93, 138, 0.5);padding: 5px;"><section style="justify-content: flex-start;display: flex;flex-flow: row;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-color: rgba(74, 93, 138, 0.07);padding: 18px;"><section style="text-align: justify;line-height: 1.8;letter-spacing: 1.8px;"><p style="text-wrap: wrap;"><strong>分析原理:</strong>探針?lè)肿颖A糁档淖兓Q于它和作為固定相的聚合物樣品之間的相互作用力。</p><p style="text-wrap: wrap;"><strong>譜圖的表示方法:</strong>探針?lè)肿颖缺A趔w積的對(duì)數(shù)值隨柱溫倒數(shù)的變化曲線。</p><p style="text-wrap: wrap;"><strong>提供的信息:</strong>探針?lè)肿颖A糁蹬c溫度的關(guān)系提供聚合物的熱力學(xué)參數(shù)。</p></section></section></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: auto;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-image: linear-gradient(90deg, rgb(74, 93, 138) 13%, rgb(111, 125, 147) 88%);min-width: 5%;height: auto;padding: 1px 14px;border-style: solid;border-width: 5px;border-color: rgba(74, 93, 138, 0.5);box-shadow: rgba(74, 93, 138, 0.17) 5px 5px 0px 0px;"><section style="font-size: 18px;text-align: justify;color: rgb(250, 254, 255);"><p style="text-wrap: wrap;"><strong>10 裂解氣相色譜法PGC </strong></p></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;border-style: solid;border-width: 1px;border-color: rgba(74, 93, 138, 0.5);padding: 5px;"><section style="justify-content: flex-start;display: flex;flex-flow: row;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-color: rgba(74, 93, 138, 0.07);padding: 18px;"><section style="text-align: justify;line-height: 1.8;letter-spacing: 1.8px;"><p style="text-wrap: wrap;"><strong>分析原理:</strong>高分子材料在一定條件下瞬間裂解,可獲得具有一定特征的碎片。</p><p style="text-wrap: wrap;"><strong>譜圖的表示方法:</strong>柱后流出物濃度隨保留值的變化。</p><p style="text-wrap: wrap;"><strong>提供的信息:</strong>譜圖的指紋性或特征碎片峰,表征聚合物的化學(xué)結(jié)構(gòu)和幾何構(gòu)型。</p></section></section></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: auto;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-image: linear-gradient(90deg, rgb(74, 93, 138) 13%, rgb(111, 125, 147) 88%);min-width: 5%;height: auto;padding: 1px 14px;border-style: solid;border-width: 5px;border-color: rgba(74, 93, 138, 0.5);box-shadow: rgba(74, 93, 138, 0.17) 5px 5px 0px 0px;"><section style="font-size: 18px;text-align: justify;color: rgb(250, 254, 255);"><p style="text-wrap: wrap;"><strong>11 凝膠色譜法GPC </strong></p></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;border-style: solid;border-width: 1px;border-color: rgba(74, 93, 138, 0.5);padding: 5px;"><section style="justify-content: flex-start;display: flex;flex-flow: row;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-color: rgba(74, 93, 138, 0.07);padding: 18px;"><section style="text-align: justify;line-height: 1.8;letter-spacing: 1.8px;"><p style="text-wrap: wrap;"><strong>分析原理:</strong>樣品通過(guò)凝膠柱時(shí),按分子的流體力學(xué)體積不同進(jìn)行分離,大分子先流出。</p><p style="text-wrap: wrap;"><strong>譜圖的表示方法:</strong>柱后流出物濃度隨保留值的變化。</p><p style="text-wrap: wrap;"><strong>提供的信息:</strong>高聚物的平均分子量及其分布。</p></section></section></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: auto;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-image: linear-gradient(90deg, rgb(74, 93, 138) 13%, rgb(111, 125, 147) 88%);min-width: 5%;height: auto;padding: 1px 14px;border-style: solid;border-width: 5px;border-color: rgba(74, 93, 138, 0.5);box-shadow: rgba(74, 93, 138, 0.17) 5px 5px 0px 0px;"><section style="font-size: 18px;text-align: justify;color: rgb(250, 254, 255);"><p style="text-wrap: wrap;"><strong>12 熱重法TG</strong></p></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;border-style: solid;border-width: 1px;border-color: rgba(74, 93, 138, 0.5);padding: 5px;"><section style="justify-content: flex-start;display: flex;flex-flow: row;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-color: rgba(74, 93, 138, 0.07);padding: 18px;"><section style="text-align: justify;line-height: 1.8;letter-spacing: 1.8px;"><p style="text-wrap: wrap;"><strong>分析原理:</strong>在控溫環(huán)境中,樣品重量隨溫度或時(shí)間變化。</p><p style="text-wrap: wrap;"><strong>譜圖的表示方法:</strong>樣品的重量分?jǐn)?shù)隨溫度或時(shí)間的變化曲線。</p><p style="text-wrap: wrap;"><strong>提供的信息:</strong>曲線陡降處為樣品失重區(qū),平臺(tái)區(qū)為樣品的熱穩(wěn)定區(qū)。</p></section></section></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: auto;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-image: linear-gradient(90deg, rgb(74, 93, 138) 13%, rgb(111, 125, 147) 88%);min-width: 5%;height: auto;padding: 1px 14px;border-style: solid;border-width: 5px;border-color: rgba(74, 93, 138, 0.5);box-shadow: rgba(74, 93, 138, 0.17) 5px 5px 0px 0px;"><section style="font-size: 18px;text-align: justify;color: rgb(250, 254, 255);"><p style="text-wrap: wrap;"><strong>13 熱差分析DTA </strong></p></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;border-style: solid;border-width: 1px;border-color: rgba(74, 93, 138, 0.5);padding: 5px;"><section style="justify-content: flex-start;display: flex;flex-flow: row;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-color: rgba(74, 93, 138, 0.07);padding: 18px;"><section style="text-align: justify;line-height: 1.8;letter-spacing: 1.8px;"><p style="text-wrap: wrap;"><strong>分析原理:</strong>在控溫環(huán)境中,樣品重量隨溫度或時(shí)間變化。<br/></p><p style="text-wrap: wrap;"><strong>譜圖的表示方法:</strong>樣品的重量分?jǐn)?shù)隨溫度或時(shí)間的變化曲線。</p><p style="text-wrap: wrap;"><strong>提供的信息:</strong>曲線陡降處為樣品失重區(qū),平臺(tái)區(qū)為樣品的熱穩(wěn)定區(qū)。</p></section></section></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: auto;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-image: linear-gradient(90deg, rgb(74, 93, 138) 13%, rgb(111, 125, 147) 88%);min-width: 5%;height: auto;padding: 1px 14px;border-style: solid;border-width: 5px;border-color: rgba(74, 93, 138, 0.5);box-shadow: rgba(74, 93, 138, 0.17) 5px 5px 0px 0px;"><section style="font-size: 18px;text-align: justify;color: rgb(250, 254, 255);"><p style="text-wrap: wrap;"><strong>14 示差掃描量熱分析DSC</strong></p></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;border-style: solid;border-width: 1px;border-color: rgba(74, 93, 138, 0.5);padding: 5px;"><section style="justify-content: flex-start;display: flex;flex-flow: row;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-color: rgba(74, 93, 138, 0.07);padding: 18px;"><section style="text-align: justify;line-height: 1.8;letter-spacing: 1.8px;"><p style="text-wrap: wrap;"><strong>分析原理:</strong>樣品與參比物處于同一控溫環(huán)境中,記錄維持溫差為零時(shí),所需能量隨環(huán)境溫度或時(shí)間的變化。</p><p style="text-wrap: wrap;"><strong>譜圖的表示方法:</strong>熱量或其變化率隨環(huán)境溫度或時(shí)間的變化曲線。</p><p style="text-wrap: wrap;"><strong>提供的信息:</strong>提供聚合物熱轉(zhuǎn)變溫度及各種熱效應(yīng)的信息。</p></section></section></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: auto;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-image: linear-gradient(90deg, rgb(74, 93, 138) 13%, rgb(111, 125, 147) 88%);min-width: 5%;height: auto;padding: 1px 14px;border-style: solid;border-width: 5px;border-color: rgba(74, 93, 138, 0.5);box-shadow: rgba(74, 93, 138, 0.17) 5px 5px 0px 0px;"><section style="font-size: 18px;text-align: justify;color: rgb(250, 254, 255);"><p style="text-wrap: wrap;"><strong>15 靜態(tài)熱-力分析TMA </strong></p></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;border-style: solid;border-width: 1px;border-color: rgba(74, 93, 138, 0.5);padding: 5px;"><section style="justify-content: flex-start;display: flex;flex-flow: row;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-color: rgba(74, 93, 138, 0.07);padding: 18px;"><section style="text-align: justify;line-height: 1.8;letter-spacing: 1.8px;"><p style="text-wrap: wrap;"><strong>分析原理:</strong>樣品在恒力作用下產(chǎn)生的形變隨溫度或時(shí)間變化。</p><p style="text-wrap: wrap;"><strong>譜圖的表示方法:</strong>樣品形變值隨溫度或時(shí)間變化曲線。</p><p style="text-wrap: wrap;"><strong>提供的信息:</strong>熱轉(zhuǎn)變溫度和力學(xué)狀態(tài)。</p></section></section></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: auto;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-image: linear-gradient(90deg, rgb(74, 93, 138) 13%, rgb(111, 125, 147) 88%);min-width: 5%;height: auto;padding: 1px 14px;border-style: solid;border-width: 5px;border-color: rgba(74, 93, 138, 0.5);box-shadow: rgba(74, 93, 138, 0.17) 5px 5px 0px 0px;"><section style="font-size: 18px;text-align: justify;color: rgb(250, 254, 255);"><p style="text-wrap: wrap;"><strong>16 動(dòng)態(tài)熱-力分析DMA</strong></p></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;border-style: solid;border-width: 1px;border-color: rgba(74, 93, 138, 0.5);padding: 5px;"><section style="justify-content: flex-start;display: flex;flex-flow: row;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-color: rgba(74, 93, 138, 0.07);padding: 18px;"><section style="text-align: justify;line-height: 1.8;letter-spacing: 1.8px;"><p style="text-wrap: wrap;"><strong>分析原理:</strong>樣品在周期性變化的外力作用下產(chǎn)生的形變隨溫度的變化。</p><p style="text-wrap: wrap;"><strong>譜圖的表示方法:</strong>模量或tgδ隨溫度變化曲線。</p><p style="text-wrap: wrap;"><strong>提供的信息:</strong>熱轉(zhuǎn)變溫度模量和tgδ。</p></section></section></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: auto;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-image: linear-gradient(90deg, rgb(74, 93, 138) 13%, rgb(111, 125, 147) 88%);min-width: 5%;height: auto;padding: 1px 14px;border-style: solid;border-width: 5px;border-color: rgba(74, 93, 138, 0.5);box-shadow: rgba(74, 93, 138, 0.17) 5px 5px 0px 0px;"><section style="font-size: 18px;text-align: justify;color: rgb(250, 254, 255);"><p style="text-wrap: wrap;"><strong>17 透射電子顯微術(shù)TEM</strong></p></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;border-style: solid;border-width: 1px;border-color: rgba(74, 93, 138, 0.5);padding: 5px;"><section style="justify-content: flex-start;display: flex;flex-flow: row;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-color: rgba(74, 93, 138, 0.07);padding: 18px;"><section style="text-align: justify;line-height: 1.8;letter-spacing: 1.8px;"><p style="text-wrap: wrap;"><strong>分析原理:</strong>高能電子束穿透試樣時(shí)發(fā)生散射、吸收、干涉和衍射,使得在相平面形成襯度,顯示出圖象。</p><p style="text-wrap: wrap;"><strong>譜圖的表示方法:</strong>質(zhì)厚襯度象、明場(chǎng)衍襯象、暗場(chǎng)衍襯象、晶格條紋象、和分子象</p><p style="text-wrap: wrap;"><strong>提供的信息:</strong>晶體形貌、分子量分布、微孔尺寸分布、多相結(jié)構(gòu)和晶格與缺陷等。</p></section></section></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: auto;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-image: linear-gradient(90deg, rgb(74, 93, 138) 13%, rgb(111, 125, 147) 88%);min-width: 5%;height: auto;padding: 1px 14px;border-style: solid;border-width: 5px;border-color: rgba(74, 93, 138, 0.5);box-shadow: rgba(74, 93, 138, 0.17) 5px 5px 0px 0px;"><section style="font-size: 18px;text-align: justify;color: rgb(250, 254, 255);"><p style="text-wrap: wrap;"><strong>18 掃描電子顯微術(shù)SEM</strong></p></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;border-style: solid;border-width: 1px;border-color: rgba(74, 93, 138, 0.5);padding: 5px;"><section style="justify-content: flex-start;display: flex;flex-flow: row;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-color: rgba(74, 93, 138, 0.07);padding: 18px;"><section style="text-align: justify;line-height: 1.8;letter-spacing: 1.8px;"><p style="text-wrap: wrap;"><strong>分析原理:</strong>用電子技術(shù)檢測(cè)高能電子束與樣品作用時(shí)產(chǎn)生二次電子、背散射電子、吸收電子、X射線等并放大成象。</p><p style="text-wrap: wrap;"><strong>譜圖的表示方法:</strong>背散射象、二次電子象、吸收電流象、元素的線分布和面分布等。</p><p style="text-wrap: wrap;"><strong>提供的信息:</strong>斷口形貌、表面顯微結(jié)構(gòu)、薄膜內(nèi)部的顯微結(jié)構(gòu)、微區(qū)元素分析與定量元素分析等。</p></section></section></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: auto;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-image: linear-gradient(90deg, rgb(74, 93, 138) 13%, rgb(111, 125, 147) 88%);min-width: 5%;height: auto;padding: 1px 14px;border-style: solid;border-width: 5px;border-color: rgba(74, 93, 138, 0.5);box-shadow: rgba(74, 93, 138, 0.17) 5px 5px 0px 0px;"><section style="font-size: 18px;text-align: justify;color: rgb(250, 254, 255);"><p style="text-wrap: wrap;"><strong>19 原子吸收AAS</strong></p></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;border-style: solid;border-width: 1px;border-color: rgba(74, 93, 138, 0.5);padding: 5px;"><section style="justify-content: flex-start;display: flex;flex-flow: row;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-color: rgba(74, 93, 138, 0.07);padding: 18px;"><section style="text-align: justify;line-height: 1.8;letter-spacing: 1.8px;"><p style="text-wrap: wrap;"><strong>原理:</strong>通過(guò)原子化器將待測(cè)試樣原子化,待測(cè)原子吸收待測(cè)元素空心陰極燈的光,從而使用檢測(cè)器檢測(cè)到的能量變低,從而得到吸光度。吸光度與待測(cè)元素的濃度成正比。</p></section></section></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: auto;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-image: linear-gradient(90deg, rgb(74, 93, 138) 13%, rgb(111, 125, 147) 88%);min-width: 5%;height: auto;padding: 1px 14px;border-style: solid;border-width: 5px;border-color: rgba(74, 93, 138, 0.5);box-shadow: rgba(74, 93, 138, 0.17) 5px 5px 0px 0px;"><section style="font-size: 18px;text-align: justify;color: rgb(250, 254, 255);"><p style="text-wrap: wrap;"><strong>20 電感耦合高頻等離子體ICP</strong></p></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;border-style: solid;border-width: 1px;border-color: rgba(74, 93, 138, 0.5);padding: 5px;"><section style="justify-content: flex-start;display: flex;flex-flow: row;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-color: rgba(74, 93, 138, 0.07);padding: 18px;"><section style="text-align: justify;line-height: 1.8;letter-spacing: 1.8px;"><p style="text-wrap: wrap;"><strong>原理:</strong>利用氬等離子體產(chǎn)生的高溫使用試樣完全分解形成激發(fā)態(tài)的原子和離子,由于激發(fā)態(tài)的原子和離子不穩(wěn)定,外層電子會(huì)從激發(fā)態(tài)向低的能級(jí)躍遷,因此發(fā)射出特征的譜線。通過(guò)光柵等分光后,利用檢測(cè)器檢測(cè)特定波長(zhǎng)的強(qiáng)度,光的強(qiáng)度與待測(cè)元素濃度成正比。</p></section></section></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: auto;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-image: linear-gradient(90deg, rgb(74, 93, 138) 13%, rgb(111, 125, 147) 88%);min-width: 5%;height: auto;padding: 1px 14px;border-style: solid;border-width: 5px;border-color: rgba(74, 93, 138, 0.5);box-shadow: rgba(74, 93, 138, 0.17) 5px 5px 0px 0px;"><section style="font-size: 18px;text-align: justify;color: rgb(250, 254, 255);"><p style="text-wrap: wrap;"><strong>21 x射線衍射即XRD</strong></p></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;border-style: solid;border-width: 1px;border-color: rgba(74, 93, 138, 0.5);padding: 5px;"><section style="justify-content: flex-start;display: flex;flex-flow: row;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-color: rgba(74, 93, 138, 0.07);padding: 18px;"><section style="text-align: justify;line-height: 1.8;letter-spacing: 1.8px;"><p style="text-wrap: wrap;"> X射線是原子內(nèi)層電子在高速運(yùn)動(dòng)電子的轟擊下躍遷而產(chǎn)生的光輻射,主要有連續(xù)X射線和特征X射線兩種。晶體可被用作X光的光柵,這些很大數(shù)目的原子或離子/分子所產(chǎn)生的相干散射將會(huì)發(fā)生光的干涉作用,從而影響散射的X射線的強(qiáng)度增強(qiáng)或減弱。由于大量原子散射波的疊加,互相干涉而產(chǎn)生最大強(qiáng)度的光束稱為X射線的衍射線。</p><p style="text-wrap: wrap;"><br/></p><p style="text-wrap: wrap;"> 滿足衍射條件,可應(yīng)用布拉格公式:2dsinθ=λ</p><p style="text-wrap: wrap;"><br/></p><p style="text-wrap: wrap;"> 應(yīng)用已知波長(zhǎng)的X射線來(lái)測(cè)量θ角,從而計(jì)算出晶面間距d,這是用于X射線結(jié)構(gòu)分析;另一個(gè)是應(yīng)用已知d的晶體來(lái)測(cè)量θ角,從而計(jì)算出特征X射線的波長(zhǎng),進(jìn)而可在已有資料查出試樣中所含的元素。</p></section></section></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: auto;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-image: linear-gradient(90deg, rgb(74, 93, 138) 13%, rgb(111, 125, 147) 88%);min-width: 5%;height: auto;padding: 1px 14px;border-style: solid;border-width: 5px;border-color: rgba(74, 93, 138, 0.5);box-shadow: rgba(74, 93, 138, 0.17) 5px 5px 0px 0px;"><section style="text-align: justify;color: rgb(250, 254, 255);font-size: 18px;"><p style="text-wrap: wrap;"><strong>22 高效毛細(xì)管電泳的基本原理</strong></p></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;border-style: solid;border-width: 1px;border-color: rgba(74, 93, 138, 0.5);padding: 5px;"><section style="justify-content: flex-start;display: flex;flex-flow: row;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-color: rgba(74, 93, 138, 0.07);padding: 18px;"><section style="text-align: justify;line-height: 1.8;letter-spacing: 1.8px;"><p style="text-wrap: wrap;"> HPLC選用的毛細(xì)管一般內(nèi)徑約為50μm(20~200μm),外徑為375μm,有效長(zhǎng)度為50cm(7~100cm)。毛細(xì)管兩端分別浸入兩分開的緩沖液中,同時(shí)兩緩沖液中分別插入連有高壓電源的電極,該電壓使得分析樣品沿毛細(xì)管遷移,當(dāng)分離樣品通過(guò)檢測(cè)器時(shí),可對(duì)樣品進(jìn)行分析處理。HPLC進(jìn)樣一般采用電動(dòng)力學(xué)進(jìn)樣(低電壓)或流體力學(xué)進(jìn)樣(壓力或抽吸)兩種方式。在毛細(xì)管電泳系統(tǒng)中,帶電溶質(zhì)在電場(chǎng)作用下發(fā)生定向遷移,其表觀遷移速度是溶質(zhì)遷移速度與溶液電滲流速度的矢量和。所謂電滲是指在高電壓作用下,雙電層中的水合陰離子引起流體整體地朝負(fù)極方向移動(dòng)的現(xiàn)象;電泳是指在電解質(zhì)溶液中,帶電粒子在電場(chǎng)作用下,以不同的速度向其所帶電荷相反方向遷移的現(xiàn)象。溶質(zhì)的遷移速度由其所帶電荷數(shù)和分子量大小決定,另外還受緩沖液的組成、性質(zhì)、pH值等多種因素影響。帶正電荷的組份沿毛細(xì)管壁形成有機(jī)雙層向負(fù)極移動(dòng),帶負(fù)電荷的組分被分配至毛細(xì)管近中區(qū)域,在電場(chǎng)作用下向正極移動(dòng)。與此同時(shí),緩沖液的電滲流向負(fù)極移動(dòng),其作用超過(guò)電泳,最終導(dǎo)致帶正電荷、中性電荷、負(fù)電荷的組份依次通過(guò)檢測(cè)器。</p></section></section></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: auto;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-image: linear-gradient(90deg, rgb(74, 93, 138) 13%, rgb(111, 125, 147) 88%);min-width: 5%;height: auto;padding: 1px 14px;border-style: solid;border-width: 5px;border-color: rgba(74, 93, 138, 0.5);box-shadow: rgba(74, 93, 138, 0.17) 5px 5px 0px 0px;"><section style="font-size: 18px;text-align: justify;color: rgb(250, 254, 255);"><p style="text-wrap: wrap;"><strong>23 MECC的基本原理</strong></p></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;border-style: solid;border-width: 1px;border-color: rgba(74, 93, 138, 0.5);padding: 5px;"><section style="justify-content: flex-start;display: flex;flex-flow: row;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-color: rgba(74, 93, 138, 0.07);padding: 18px;"><section style="text-align: justify;line-height: 1.8;letter-spacing: 1.8px;"><p style="text-wrap: wrap;"> MECC是在CZE基礎(chǔ)上使用表面活性劑來(lái)充當(dāng)膠束相,以膠束增溶作為分配原理,溶質(zhì)在水相、膠束相中的分配系數(shù)不同,在電場(chǎng)作用下,毛細(xì)管中溶液的電滲流和膠束的電泳,使膠束和水相有不同的遷移速度,同時(shí)待分離物質(zhì)在水相和膠束相中被多次分配,在電滲流和這種分配過(guò)程的雙重作用下得以分離。MECC是電泳技術(shù)與色譜法的結(jié)合,適合同時(shí)分離分析中性和帶電的樣品分子。</p></section></section></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: auto;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-image: linear-gradient(90deg, rgb(74, 93, 138) 13%, rgb(111, 125, 147) 88%);min-width: 5%;height: auto;padding: 1px 14px;border-style: solid;border-width: 5px;border-color: rgba(74, 93, 138, 0.5);box-shadow: rgba(74, 93, 138, 0.17) 5px 5px 0px 0px;"><section style="font-size: 18px;text-align: justify;color: rgb(250, 254, 255);"><p style="text-wrap: wrap;"><strong>24 掃描隧道顯微鏡(STM)</strong></p></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;border-style: solid;border-width: 1px;border-color: rgba(74, 93, 138, 0.5);padding: 5px;"><section style="justify-content: flex-start;display: flex;flex-flow: row;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-color: rgba(74, 93, 138, 0.07);padding: 18px;"><section style="text-align: justify;line-height: 1.8;letter-spacing: 1.8px;"><p style="text-wrap: wrap;"> 掃描隧道顯微鏡(STM)的基本原理是利用量子理論中的隧道效應(yīng)。將原子線度的極細(xì)探針和被研究物質(zhì)的表面作為兩個(gè)電極,當(dāng)樣品與針尖的距離非常接近時(shí)(通常小于1nm),在外加電場(chǎng)的作用下,電子會(huì)穿過(guò)兩個(gè)電極之間的勢(shì)壘流向另一電極。這種現(xiàn)象即是隧道效應(yīng)。</p></section></section></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: auto;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-image: linear-gradient(90deg, rgb(74, 93, 138) 13%, rgb(111, 125, 147) 88%);min-width: 5%;height: auto;padding: 1px 14px;border-style: solid;border-width: 5px;border-color: rgba(74, 93, 138, 0.5);box-shadow: rgba(74, 93, 138, 0.17) 5px 5px 0px 0px;"><section style="font-size: 18px;text-align: justify;color: rgb(250, 254, 255);"><p style="text-wrap: wrap;"><strong>25 原子力顯微鏡</strong></p></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;border-style: solid;border-width: 1px;border-color: rgba(74, 93, 138, 0.5);padding: 5px;"><section style="justify-content: flex-start;display: flex;flex-flow: row;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-color: rgba(74, 93, 138, 0.07);padding: 18px;"><section style="text-align: justify;line-height: 1.8;letter-spacing: 1.8px;"><p style="text-wrap: wrap;"> 原子力顯微鏡的工作原理就是將探針裝在一彈性微懸臂的一端,微懸臂的另一端固定,當(dāng)探針在樣品表面掃描時(shí),探針與樣品表面原子間的排斥力會(huì)使得微懸臂輕微變形,這樣,微懸臂的輕微變形就可以作為探針和樣品間排斥力的直接量度。一束激光經(jīng)微懸臂的背面反射到光電檢測(cè)器,可以精確測(cè)量微懸臂的微小變形,這樣就實(shí)現(xiàn)了通過(guò)檢測(cè)樣品與探針之間的原子排斥力來(lái)反映樣品表面形貌和其他表面結(jié)構(gòu)。</p></section></section></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: auto;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-image: linear-gradient(90deg, rgb(74, 93, 138) 13%, rgb(111, 125, 147) 88%);min-width: 5%;height: auto;padding: 1px 14px;border-style: solid;border-width: 5px;border-color: rgba(74, 93, 138, 0.5);box-shadow: rgba(74, 93, 138, 0.17) 5px 5px 0px 0px;"><section style="font-size: 18px;text-align: justify;color: rgb(250, 254, 255);"><p style="text-wrap: wrap;"><strong>26 俄歇電子能譜學(xué)</strong></p></section></section></section><section style="justify-content: flex-start; display: flex; flex-flow: row; margin-top: 10px; margin-bottom: 10px;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;border-style: solid;border-width: 1px;border-color: rgba(74, 93, 138, 0.5);padding: 5px;"><section style="justify-content: flex-start;display: flex;flex-flow: row;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-color: rgba(74, 93, 138, 0.07);padding: 18px;"><section style="text-align: justify;line-height: 1.8;letter-spacing: 1.8px;"><p style="text-wrap: wrap;"> 俄歇電子能譜基本原理:入射電子束和物質(zhì)作用,可以激發(fā)出原子的內(nèi)層電子。外層電子向內(nèi)層躍遷過(guò)程中所釋放的能量,可能以X光的形式放出,即產(chǎn)生特征X射線,也可能又使核外另一電子激發(fā)成為自由電子,這種自由電子就是俄歇電子。對(duì)于一個(gè)原子來(lái)說(shuō),激發(fā)態(tài)原子在釋放能量時(shí)只能進(jìn)行一種發(fā)射:特征X射線或俄歇電子。原子序數(shù)大的元素,特征X射線的發(fā)射幾率較大,原子序數(shù)小的元素,俄歇電子發(fā)射幾率較大,當(dāng)原子序數(shù)為33時(shí),兩種發(fā)射幾率大致相等。因此,俄歇電子能譜適用于輕元素的分析。</p></section></section></section></section></section></p><p><br/></p>Thu, 10 Oct 2024 11:47:23 +0800
- 關(guān)于潤(rùn)揚(yáng)儀器2024年國(guó)慶節(jié)放假的通知http://awosi.cn/post/428.html<p>各位新老客戶及全體員工:</p><p>根據(jù)國(guó)家2024年部分節(jié)假日安排的通知精神及本公司實(shí)際情況,現(xiàn)將本公司2024年國(guó)慶節(jié)放假有關(guān)事宜通知如下:</p><p>一、2024年國(guó)慶節(jié)放假時(shí)間為:2024年10月1日-10月7日,共7天,10月8日(周二)正式上班。10月12日(周六日)調(diào)換為上班時(shí)間。</p><p>二、為更好地服務(wù)新老客戶,節(jié)日期間公司已安排工作人員輪流值班,應(yīng)急電話:13356323915。如有疑問(wèn)或需求請(qǐng)聯(lián)系對(duì)應(yīng)技術(shù)人員,我們將盡快給予回復(fù)處理。</p><p>國(guó)慶佳節(jié),舉國(guó)同慶。愿你我如龍騰飛,共繪輝煌未來(lái);如龍行天下,共享盛世繁華。愿您與家人歡聚一堂,共享天倫之樂(lè),幸福安康永相隨;愿祖國(guó)繁榮昌盛的輝煌映照您的人生旅途,讓您的生活如詩(shī)如畫,事業(yè)蒸蒸日上,再創(chuàng)輝煌。祝祖國(guó)繁榮昌盛,人民幸福安康!同時(shí),潤(rùn)揚(yáng)儀器溫馨提醒,假期出行旅游的人較多,遵守交通規(guī)則,出行注意安全,加強(qiáng)個(gè)人防護(hù),享受一個(gè)愉快而安心的國(guó)慶假期。</p><p>潤(rùn)揚(yáng)儀器全體員工祝全國(guó)人民國(guó)慶節(jié)快樂(lè)!</p><p style="text-align: right;">山東潤(rùn)揚(yáng)儀器有限公司</p><p style="text-align: right;">2024年9月29日</p><p style="text-align: center;"><img class="wp-image-5121 aligncenter" src="http://awosi.cn/zb_users/upload/2024/09/20240930172711_22367.jpg" alt="" width="805" height="1673"/></p><p><br/></p>Mon, 30 Sep 2024 17:25:55 +0800
- 喜訊!潤(rùn)揚(yáng)儀器中標(biāo)東北石油大學(xué)三亞海洋油氣研究院實(shí)驗(yàn)平臺(tái)棒狀薄層色譜儀采購(gòu)項(xiàng)目http://awosi.cn/post/427.html<p>近日,黑龍江省政府采購(gòu)網(wǎng)公布了<strong>“<span style="font-size: 14px;">東北石油大學(xué)2024年三亞海洋油氣研究院實(shí)驗(yàn)平臺(tái)設(shè)備</span><span style="font-size: 12pt;">”</span></strong>采購(gòu)項(xiàng)目的中標(biāo)結(jié)果,山東潤(rùn)揚(yáng)儀器有限公司的RY-CF19棒狀薄層色譜儀在眾多廠商中脫穎而出成功中標(biāo)。這一中標(biāo)喜訊不僅彰顯了潤(rùn)揚(yáng)儀器一直致力于原油、渣油、蠟油、潤(rùn)滑油及油氣勘探分析應(yīng)用領(lǐng)域的技術(shù)實(shí)力,更是對(duì)公司長(zhǎng)期以來(lái)堅(jiān)持加快國(guó)產(chǎn)替代、創(chuàng)新驅(qū)動(dòng)、質(zhì)量至上發(fā)展理念的蕞好詮釋。</p><p>東北石油大學(xué)三亞海洋油氣研究院是為響應(yīng)關(guān)于建設(shè)海洋強(qiáng)國(guó)的重要指示精神,全面對(duì)接國(guó)家能源戰(zhàn)略,發(fā)揮東北石油大學(xué)石油學(xué)科優(yōu)勢(shì),與三亞市人民政府、海南省科技廳三方共建,于2021年2月2日在三亞崖州灣科技城成立了具有獨(dú)立法人資格的新型事業(yè)單位。</p><p>研究院的成立主要是面向南海海洋油氣開展科學(xué)研究和博士、碩士等高層次人才培養(yǎng)。目前建有一個(gè)院士工作站,兩個(gè)博士后工作站,建有深海盆地構(gòu)造與資源評(píng)價(jià)研究中心、海洋油氣地質(zhì)工程一體化研究中心、海洋油氣高效開發(fā)與提高采收率研究中心、深海油氣鉆完井工程及增產(chǎn)研究中心、海洋石油裝備及安全檢測(cè)研究中心、深水油氣與水合物開采研究中心、海洋能源與環(huán)境研究中心、海洋油氣人工智能研究中心和智慧城市建設(shè)研究中心等9個(gè)研究中心。常駐人員80人,兼職科研人員62人,在院博士、碩士研究生50人。依托東北石油大學(xué),擁有省部共建國(guó)家重點(diǎn)實(shí)驗(yàn)室培育基地1個(gè)省部共建教育部重點(diǎn)實(shí)驗(yàn)室2個(gè)、國(guó)家能源研發(fā)中心1個(gè)、國(guó)家工程實(shí)驗(yàn)室(研究室)1個(gè)、省重點(diǎn)實(shí)驗(yàn)室12個(gè)、省技術(shù)創(chuàng)新中心3個(gè),其中包括水合物勘探開發(fā)省級(jí)重點(diǎn)實(shí)驗(yàn)室。能夠承擔(dān)海域油氣勘探開發(fā)、水合物勘探開發(fā)等方向的科學(xué)研究工作。</p><p>潤(rùn)揚(yáng)RY-CF19棒狀薄層色譜儀自上市以來(lái),經(jīng)歷數(shù)十年的不斷創(chuàng)新發(fā)展,已經(jīng)成為原油、重油四組分分析國(guó)產(chǎn)替代的重要儀器設(shè)備,為企業(yè)節(jié)省大量的資本投入。去年,依據(jù)SH/T0753、SY/T 5119、SN/T 3118等標(biāo)準(zhǔn)中的實(shí)驗(yàn)要求設(shè)計(jì)研發(fā)的自動(dòng)分離展樣儀隆重上市,極大的推動(dòng)了整套儀器自動(dòng)化、智能化進(jìn)程,將其中色譜展開步驟需要人工觀測(cè)、計(jì)時(shí)、轉(zhuǎn)移的步驟,通過(guò)一個(gè)兩軸機(jī)械臂自動(dòng)完成,從傳統(tǒng)人工手動(dòng)的9~12個(gè)步驟,優(yōu)化到2~3個(gè)步驟自動(dòng)完成。該配套儀器具有自主研發(fā)設(shè)計(jì),具有簡(jiǎn)單易用的恒濕恒溫環(huán)境中自動(dòng)轉(zhuǎn)移棒架、恒濕、分離、晾干及凈化,使分析測(cè)試工作更輕松。</p><p>整套儀器設(shè)備采用四組分自動(dòng)展樣分離系統(tǒng)和棒狀薄層色譜儀有機(jī)結(jié)合,具有自動(dòng)化程度高、展樣無(wú)需人工值守、操作簡(jiǎn)單、環(huán)保等特點(diǎn),同時(shí),大量節(jié)省試劑耗材和人力成本,讓分析更輕松。儀器采用FDM的3D打印技術(shù)配合電子傳感流量控制技術(shù)和激光切割加工工藝,硬核技術(shù)與奢雅美學(xué)設(shè)計(jì)融為一體將每一臺(tái)儀器打造成內(nèi)在質(zhì)量穩(wěn)定可靠、外觀臻于細(xì)節(jié)的匠心妙藝科技產(chǎn)品,全面保證了儀器實(shí)驗(yàn)分析數(shù)據(jù)的準(zhǔn)確性和重現(xiàn)性。廣泛用于生命醫(yī)學(xué)、石油化工、油氣勘探、煤炭化學(xué)、精細(xì)化工、食品營(yíng)養(yǎng)、質(zhì)量監(jiān)督、中西醫(yī)藥、衛(wèi)生疾控、環(huán)境化學(xué)及科學(xué)研究等方面。</p><p>棒狀薄層色譜分析是一種高靈敏度多用途TLC和FID相結(jié)合的分析技術(shù),它在原油、渣油、潤(rùn)滑油、蠟油等油品四組分分析中扮演著重要角色。它能夠準(zhǔn)確測(cè)定原油、渣油、蠟油、瀝青、潤(rùn)滑脂、潤(rùn)滑油類和合成油、脂類、磷脂類、甘油三酯、脂肪酸、合成脂、表面活性劑、各類工業(yè)脂類、和各類烴類物質(zhì)、聚合物,食用油,醫(yī)藥試劑的族組分,對(duì)于評(píng)估和監(jiān)控油品質(zhì)量至關(guān)重要,并為不同煉化工藝制定提供堅(jiān)實(shí)基礎(chǔ)。</p><p>此次中標(biāo)不僅是潤(rùn)揚(yáng)儀器實(shí)力的體現(xiàn),更是公司長(zhǎng)期以來(lái)堅(jiān)持創(chuàng)新驅(qū)動(dòng)、質(zhì)量為本的發(fā)展理念的成果。公司將以此為契機(jī),進(jìn)一步加強(qiáng)與東北石油大學(xué)三亞油氣研究院的合作,為提升國(guó)產(chǎn)油氣產(chǎn)量和煉化能力提供貢獻(xiàn)自己的堅(jiān)實(shí)力量。</p><p>未來(lái),公司將不斷加大研發(fā)投入,推出更多高性能、智能化的分析儀器設(shè)備,助力石油勘探、開采、煉化事業(yè)的油品產(chǎn)量的自主化邁上新臺(tái)階。</p><p>中標(biāo)公告:https://hljcg.hlj.gov.cn/freecms/site/hlj/ggxx/info/2024/2c9083699068f03301909b6326b61089.html?noticeType=0</p><p><br/></p>Mon, 30 Sep 2024 17:22:29 +0800