气相色谱-串联质谱法测定大米中36种有机磷农药残留量  

Gas chromatography-tandem mass spectrometry method for the determination of residues of 36 organophosphorus pesticides in rice

作　　者：高玲[1] 郑茜尹[2] 杨元[1] 

机构地区：[1]成都市疾病预防控制中心,成都610041 [2]上海市普陀区疾病预防控制中心,上海200333

出　　处：《中国卫生检验杂志》2013年第3期535-539,543,共6页Chinese Journal of Health Laboratory Technology

基　　金：四川省医学重点实验室建设经费资助

摘　　要：目的:建立大米中36种有机磷农药的无净化GC/MS/MS测定方法。方法:采用液-液萃取技术,对大米中36种有机磷类农药进行提取,无需净化,直接进样分析。结果:根据不同农药,本法检出限在0.001μg/kg～3.5μg/kg之间,方法定量下限在0.004μg/kg～10μg/kg之间,本法精密度RSD均<15%(除乐果之外),回收率在88.3%～108.3%。结论:本法简便、快速、灵敏、结果可靠。Objective：To establish a gas chromatography - tandem mass spectrometry method for the determination of residues of 36 organophosphorus pesticides in rice without purification. Methods： The organophosphorus pesticides in rice samples were extracted with liquid - liquid extraction, and then analyzed without purification. Results ： The detection limits were 0. 001 p^g/kg - 3.5 Ixg/kg, the limits of quantification were between 0. 004 μg/kg 10 μg/kg. The spiked recoveries were 88.33% - 108.33%, the precision（RSD% ） were less than 15% （ except dimethoate）. Conclusion： The established method is simple, rapid, sensitive and accurate.

关 键 词：大米 农药残留 有机磷农药 气相色谱 串联质谱技术 液液萃取 免净化 

分 类 号：O657.63[理学—分析化学]