作　　者： ; ; ; ;

机构地区： 华南农业大学资源环境学院农药与化学生物学教育部重点实验室

出　　处： 《分析测试学报》 2010年第6期 617-620,共4页

摘　　要： 建立了同时测定小麦中12种农药（灭线磷、甲拌磷、甲基毒死蜱、八氯二丙醚、马拉硫磷、毒死蜱、氟虫腈、杀扑磷、溴虫腈、三唑磷、联苯菊酯和甲氰菊酯）残留的快速分析方法。样品采用改进的QuEChERS进行前处理,用1%乙酸乙腈提取,C18和中性氧化铝双重净化后,结合GC-MS/SIM对小麦中的12种农药进行检测。结果表明,小麦中12种农药的加标水平为0.025-1.0 mg/kg时,平均回收率为76%-108%,相对标准偏差为0.4%-10.5%;方法的定量下限（S/N=10）为0.5-9.8μg/kg,低于欧盟设定的MRLs值。 A rapid,simple and sensitive analysis method was developed for the simultaneous determination of 12 pesticides,including ethoprophos,phorate,chlorpyrifos-methyl,bis（2333-tetrachloropropyl） ether,malathion,chlorpyrifos,fipronil,methidathion,chlorfenapyr,triazophos,bifenthrin and fenpropathrin in wheat.The analysis of target compounds was performed by the modified QuEChERS sample preparation combined with GC-MS/SIM method.The sample was extracted with acetonitrile（1% acetic acid） in the triangle vase and cleaned up by C18 and aluminum oxide neutral.The results showed that the average recoveries of 12 pesticides at spiked levels of 0.025-1.0 mg/kg ranged from 76% to 108% with relative standard deviations of 0.4%-10.5%.The limits of quantitation（S/N=10） of 12 pesticides were in the range of 0.5-9.8 μg/kg,lower than maximum residue limits（MRLs） of EU.The developed method could meet the requirement of the multi-residues analysis.

关 键 词： 小麦 多残留

分 类 号： [O657.71 F767.2]

领　　域： [理学] [理学] [经济管理]