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环境化学  2015 

生物样品中甲磺基多氯联苯的测定及手性拆分

Keywords: 甲磺基多氯联苯,分析测定,弗罗里硅土柱,手性,Cyclosil-B手性柱

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Abstract:

建立了一种生物样品中甲磺基多氯联苯(MeSO2-PCBs)及其手性对映体的分析测定方法.本方法利用索氏抽提对鱼肉组织进行提取,抽提液依次经凝胶渗透色谱柱、氧化铝硅胶复合柱和弗罗里硅土柱进行净化和分离,气相色谱-质谱联用仪进行分析.10个流程空白中,所有目标化合物都低于仪器检出限;17种MeSO2-PCBs在5个空白加标中的平均回收率在77.2%-98.2%之间;样品平行样中目标化合物含量相对标准偏差均小于15%;方法检测限为0.3-20.0pg·g-1湿重.采用Cyclosil-B手性柱拆分5种MeSO2-PCBs手性对映体,分离度在0.671-2.543之间.

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