气相色谱法测定蔬菜中8种有机磷农药残留  

Determination of 8 Organophosphorus Pesticides Residue in Vegetables by Gas Chromatography

作　　者：廖杰良 李拥军 熊文明 刘有添 谢水清 

机构地区：[1]中山市五桂山农业服务中心,广东中山528458 [2]中山市农产品质量监督检验所 [3]中山市水产技术推广中心站

出　　处：《现代农业科技》2014年第8期268-269,共2页Modern Agricultural Science and Technology

基　　金：中山市科技计划项目(2013A3FC0234)

摘　　要：研究了蔬菜中的有机磷农药（包括敌敌畏、甲拌磷、特丁硫磷、乐果、毒死蜱、甲基对硫磷、水胺硫磷、杀扑磷）残留量的气相色谱测定方法。采用丙酮和二氯甲烷提取无需净化，DB-1701柱色谱分离，采用FPD检测器检测，8种农药在15min内获得良好的分离，线性相关系数（r）为0．9990～0．9998，检测限达0．01～0．03mg／kg，当添加水平为0．5mg／kg时，该法回收率范围为81．4％～102．2％。该法快速灵敏，且易操作。A method for determination of 8 organophosphorus pesticides residue （including dichlorvos, phorate, terbufos, nogo, chlorpyrifos, methyl parathion,isocarbophos and methidathion）in vegetables by gas chromatography was investigated.The eight pesticides could be well separated within 15 min in a DB-1701 column after pretrating of sample by extaeting with aceton and methylene chloride without cleaning up.The pesticides were detected with FPD detector.As a spiked level was 0.5 mg/kg,the recovery of the method for the pesticides were 81.4%～102.2% ,the correlation coefficient ranged from 0.999 0 to 0.999 8, the detection limits,were 0.01～0.03 mg/kg.The method was quick, sensitive and easy in operation.

关 键 词：气相色谱法 蔬菜 有机磷农药 残留量 

分 类 号：TS207.7[轻工技术与工程—食品科学]