全自动固相萃取LC/MS/MS测定水中6种有机磷农药

Determination of Six Organophosphorus Pesticides in Water by Liquid Chromatography-tandem Mass Spectrometry

摘要:
目的建立水中6种有机磷农药的检测方法。
方法利用全自动固相萃取前处理技术，液相色谱串联质谱的方法，选择最佳的仪器条件，同时测定水中6种有机磷农药。
结果 6种有机磷农药类线性关系较好，相关系数大于0.999，方法检出限在0.16 ~ 63.8 ng/L之间，回收率在84% ~ 117%之间，相对标准偏差小于14%。
结论本实验所建立的方法灵敏度好，选择性好，准确度高。

Abstract:
Objectives To develop a method of determining 6 organophosphorus pesticides (OPs) simultaneously in water.
Methods The water samples were extracted by automatic solid phase extraction and analyzed by liquid chromatography-tandem mass spectrometry (LC/MS/MS).
Results The linear correlation coefficients of 6 OPs were greater than 0.999. The detection limits were in the range of 0.16 ng/L ~ 63.8 ng/L. The recoveries of standard addition were 84% ~ 117%, and the RSDs were less than 14%.
Conclusions The method was quick, sensitive and specific.