加速溶剂萃取-高效液相色谱串联质谱法测定土壤中农药残留  

Determination of Pesticides in Soil by Accelerated Solvent Extraction Liquid Chromatography Tandem Mass Spectrometry

作　　者：闫蕊[1] 邵明媛[1] 鞠福龙[2] 宋大千[1] 张寒琦[1] 于爱民[1] 

机构地区：[1]吉林大学化学学院,长春130012 [2]黑龙江省质量监督检测研究院,哈尔滨150050

出　　处：《分析化学》2013年第2期315-316,共2页Chinese Journal of Analytical Chemistry

基　　金：吉林省科技发展计划项目和教育部新世纪优秀人才项目资助

摘　　要：1引言土壤中农药残留可分为杀虫剂、除草剂和杀菌剂残留。常见杀虫剂有克百威和甲氰菊酯等,常见除草剂有苯噻酰草胺、乙草胺、丙草胺、喹禾灵和草酮等,常见杀菌剂有烯酰吗啉和稻瘟灵等。克百威是广谱性杀虫剂,它与胆碱酯酶结合不可逆,因此毒性很高;乙草胺是使用量极大的除草剂之一。这两种农药的毒性远高于其它几种常见农药。快速的前处理及稳定的仪器检测是研究土壤中农药残留的关键,尤其是各类型农药的同时检测,不仅可以提高检测效率。A rapid and accurate method based on accelerated solvent extraction liquid chromatography tandem mass spectrometry （LC-MS/MS） was developed for the determination of 9 kinds of pesticides in soil. The analytes were extracted by accelerated sol- vent extraction using aeetonitrile as the extraction solvent. The extract was concentrated by evaporation. Qualitative and quantita- tive analysis for the analytes was carried out by the multiple reaction monitoring mode after the chromatographic separation using aeetonitrile-water solution as mobile phase. The linear range of detection for nine pesticides was between 0.5-500 μg/kg, and the limits of detection were between 0.2-2.0μg,/kg. The recoveries and relative standard deviations were 90.0% -105.0% and 1.0%-5.9% , respectively. This method is rapid, sensitive and suitable to the determination of pesticides in soil.

关 键 词：Accelerated solvent extraction Liquid CHROMATOGRAPHY TANDEM mass SPECTROMETRY Soil PESTICIDE 

分 类 号：X833[环境科学与工程—环境工程] O657.63[理学—分析化学]