建立了分散液相微萃取-气相色谱-串联质谱( GC-MS/MS)联用方法用于快速分析蔬菜中8种亲脂类农药残留.样品用水-丙酮(5∶1,v/v)混合溶液提取,经布氏漏斗减压抽滤.滤液经N-丙基乙二胺(PSA)吸附剂、C18吸附剂、石墨炭黑粉净化后,用氯苯萃取,GC-MS/MS测定.对影响萃取和富集效率的因素进行了优化.在优化的实验条件下,农药的富集倍数达526 ~ 878,检出限为0.001 ~0.02 mg/kg,线性范围为0.005~ 10mg/kg,线性相关系数为0.992 1~0.998 9,平均加标回收率为60.1% ~ 82.5%,相对标准偏差为1.2% ~ 9.6%.该方法已成功应用于蔬菜中8种亲脂类农药残留的测定.
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