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分析化学  2014 

QuEChERS-在线凝胶色谱-气相色谱-质谱法测定植物油中34种农药残留

DOI: 10.11895/j.issn.0253-3820.131225, PP. 1110-1116

Keywords: QuEChERS,凝胶色谱-气相色谱-质谱,植物油,农药残留,快速筛查

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Abstract:

建立了葵花油、大豆油和玉米油中34种中高毒农药的快速筛查方法。样品采用改进的QuEChERS方法进行提取净化,提取液采用在线GPC-GC-MS检测。结果表明,34种农药在0.01~0.2mg/L范围内具有良好的线性关系,相关系数为0.9913~0.9997。除p,p’-DDE,p,p’-DDD,p,p’-DDT外的31种农药在葵花油、大豆油和玉米油中的检出限分别为0.0692~2.28μg/kg,0.0559~2.01μg/kg,0.0584~2.14μg/kg;在0.05和0.1μg/g添加水平的平均回收率分别为70.3%~115.4%,69.5%~112.6%,70.2%~116.1%;相对标准偏差(RSD,n=6)分别为2.9%~13.3%,3.9%~13.5%,4.2%~12.1%。本方法具有操作便捷、快速等特点,适用于葵花油、大豆油和玉米油中34种农药残留的快速筛查与检测。

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