气相色谱法同时测定山药和葛根中27种有机氯及拟除虫菊酯农药残留量  

Simultaneous determination of 27 organochlorine and pyrethroid pesticides in Yam and Pueraria by gas chromatography

作　　者：王均[1] 曹淑瑞[2] 张雷[2] 徐芬[2] 明德旺 陈志琼[1] 

机构地区：[1]重庆医科大学药学院,重庆400016 [2]重庆出入境检验检疫局,重庆400020

出　　处：《分析试验室》2013年第2期60-63,共4页Chinese Journal of Analysis Laboratory

基　　金：国家认监委检验检疫行业标准项目(2012B132)资助

摘　　要：建立了山药和葛根中20种有机氯和7种拟除虫菊酯农药残留的提取、净化及其残留量测定的方法。样品采用丙酮-正己烷(4:3,V/V)提取,经凝胶渗透色谱净化后,采用气相色谱-电子捕获检测器检测。结果表明山药和葛根样品基质4水平添加条件下,27种农药的回收率(n=7)为80.1%～103.7%,相对标准偏差为1.9%～11%,最低检测限为0.09～1.82μg/kg,符合农药多残留检测要求。方法可用于山药和葛根中多种有机氯及拟除虫菊酯农药残留量的检测。To develop a method for the determination of twenty organochlorine and seven pyrethroid pesticide residues in Yam and Pueraria by gas chromatography. The samples were extracted by acetone-hexane （4：3, V/V） and cleaned up by gel permeation chromatography, detected by gas chromatography-electron capture detector. The results showed under the four adding levels of Yam and Pueraria sample matrix, the average recoveries of twenty-seven organochlorine and pyrethroid pesticides were 80. 1% - 103.7% （ n = 7 ）, the relative standard deviations were 1.9% - 11% ,the limits of detection were 0. 09 - 1.82 μg/kg, which accorded with the requirements of pesticide residue determination. The proposed method shows the effective decontemination, high recovery, good repeatability, and it can be used for the detection of organochlorine and pyrethroid pesticide residues in Yam and Pueraria.

关 键 词：山药和葛根 有机氯 拟除虫菊酯 凝胶渗透色谱法 气相色谱法 

分 类 号：O657.7[理学—分析化学]