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class="w1200 clear"> <div id="m0wuomu" class="ny_newsdetail clear"> <h1 class="ny_newsdetail_title">食品安全檢測(cè)分析儀檢測(cè)技術(shù)</h1> <div id="m0wuomu" class="ny_newsdetail_tips">更新時(shí)間：2015-12-28 | 點(diǎn)擊率：1973</div> <div id="m0wuomu" class="ny_newsdetail_con"> <a href="http://www.qdjlst.com/"> <strong>食品安全檢測(cè)分析儀</strong></a>檢測(cè)技術(shù)<div>（1）溶劑萃取法</div><div><strong>食品安全檢測(cè)分析儀</strong>這是一種zui常用、zui有效的方法，但當(dāng)用溶劑提取樣品中的農(nóng)殘時(shí)，也會(huì)同時(shí)將許多的干擾雜質(zhì)引入分析體系。</div><div>（2）柱層析法</div><div>柱層析法在處理基質(zhì)復(fù)雜的樣品時(shí)可以非常有效地將樣品中的被測(cè)組分與干擾組分分離，達(dá)到分離凈化的目的。常用的吸附劑有硅鎂吸附劑、硅酸、活性炭、硅藻土等。</div><div>（3）固相萃取法（SPE）</div><div>固相萃取技術(shù)是目前常用的凈化手段。它根據(jù)液相分離、解析、濃縮等原理，使樣品溶液混合物通過柱子后，樣品中某一組組分保留在柱中，再選擇合適的溶劑把保留在柱中的組分洗脫下來，從而達(dá)到分離、凈化的目的。</div><div>（4）無溶劑固相微萃取法（SPME）</div><div>食品安全檢測(cè)分析儀方法近幾年來在環(huán)境樣品的分析中得到了廣泛的應(yīng)用，它無需使用溶劑，是一種簡單、快速并且非常有效的樣品前處理手段。</div><div>（5）基質(zhì)固相分散萃?。∕SPDE）</div><div><strong>食品安全檢測(cè)分析儀</strong>是一種嶄新的萃取技術(shù)。其基本操作是將試樣直接與反相填料研磨、混勻制成半固態(tài)裝柱淋洗，是簡單的提取凈化方法，適用于各種分子結(jié)構(gòu)和極性農(nóng)藥殘留的提取凈化，在蔬菜、水果的農(nóng)藥殘留檢測(cè)中得到了廣泛的應(yīng)用。</div><div>（6）超臨界流體萃?。⊿FE）</div><div>SFE是以超臨界流體代替各種溶劑來萃取樣品中待測(cè)組分的萃取方法。它是當(dāng)前發(fā)展zui快的分析技術(shù)之一，具有zui快速、節(jié)約溶劑、避免污染、操作方便、安全等優(yōu)點(diǎn)。因此，這一技術(shù)在食品的農(nóng)藥殘留檢測(cè)中的應(yīng)用日益增多</div><div>（7）分子印跡合成受體（MISR）</div><div><strong>食品安全檢測(cè)分析儀</strong>的原理是首先使擬被印跡的分子或聚合物單體交聯(lián)，再將印跡分子從聚合物中提取出來，聚合物內(nèi)部就留下了被印跡分子的印跡。分子印跡技術(shù)可用于藥物、激素、蛋白質(zhì)、農(nóng)藥、氨基酸、多肽碳水化合物、輔酶、甾醇、涂料、金屬離子等各種化合物的分離工作。</div><div>（8）生物傳感器技術(shù)</div><div>生物傳感器是一類以生物材料為敏感識(shí)別元件，將化學(xué)量轉(zhuǎn)化為其他可測(cè)定的物理量（如電流、電壓、光、熱等）的裝置。其特點(diǎn)是集生物化學(xué)、生物工程、電化學(xué)、材料科學(xué)和微型制造技術(shù)為于一體，是一個(gè)典型的多學(xué)科交叉產(chǎn)物。目前用于農(nóng)藥殘留檢測(cè)的生物傳感器類型有安培型電極、電位型電極、電壓生物傳感器和光纖生物傳感器等。</div> 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