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浊点萃取反萃取-气质联用测定金线莲中5种拟除虫菊酯类农药残留

Keywords: 金线莲,浊点萃取,反萃取,气质联用,菊酯类农药,残留分析

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Abstract:

建立浊点萃取反萃取-气质联用测定金线莲中甲氰菊酯、高效氯氟氰菊酯、氯菊酯、氯氰菊酯和氰戊菊酯5种拟除虫菊酯类农药残留量的测定方法。选用聚乙二醇6000作为浊点萃取的提取剂、异辛烷为反萃取剂,气相色谱质谱法进行检测,外标法计算含量,结果表明,5种拟除虫菊酯类农药在15~2000μg·kg-1呈良好的线性关系,相关系数为0.955~0.999,加标回收率85.12%~101.6%,RSD3.1%~8.4%,检出限0.63~3.10μg·kg-1,定量限2.10~10.31μg·kg-1。该方法操作简单、安全,可应用于金线莲中5种拟除虫菊酯类农药残留的检测。

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