气相色谱法测定平菇中拟除虫菊酯类农药残留  

Simultaneous determination of pyrethroids pesticide multi-residues in Pleurotus ostreatus by gas chromatography with ECD

作　　者：樊中臣[1] 施艳红[1] 操海群[2] 花日茂[1] 岳永德[3] 汤锋[3] 

机构地区：[1]安徽农业大学资源与环境学院安徽省农产品安全重点实验室,合肥230036 [2]安徽农业大学植物保护学院,合肥230036 [3]国际竹藤网络中心,北京100080

出　　处：《安徽农业大学学报》2011年第4期559-562,共4页Journal of Anhui Agricultural University

基　　金：公益性行业科研专项(200804014);安徽省优秀青年科技基金(10040606Y01)共同资助

摘　　要：建立了同时测定平菇中联苯菊酯、甲氰菊酯、氰戊菊酯、溴氰菊酯、高效氯氰菊酯、高效氯氟氰菊酯等6种拟除虫菊酯类农药的多残留快速分析方法。样品以乙腈为提取溶剂,弗罗里硅土柱层析净化,GC-μECD分析测定。结果表明,供试农药在0.005~1.0 mg.kg-1的添加浓度范围内,线性关系良好,相关系数大于0.998;方法的添加回收率为83.80%~113.98%,变异系数为1.32%~13.26%,最低检出浓度为5~10μg.L-1。该方法的准确性、精确性和灵敏度均达到农药残留分析的要求。A rapid multiresidue analytical method for determination of 6 pyrethroid pesticides in Pleurotus ostreatus was developed by gas chromatography with ECD（electron capture detection）.The sample of Pleurotus ostreatus was extracted by acetonitrile,cleaned up by florisil column and detected by GC-μECD.The ECD re-sponse for selected pesticides was linear between 0.005 and 1.0 mg·kg-1,and the correlation coefficients were greater than 0.998.The average recoveries of 6 pesticides ranged from 83.80% to 113.98% in Pleurotus ostreatus,and the relative standard deviations were 1.32%-13.26%.The minimum detectable concentrations of selected pesticides ranged from 5 to 10 μg·L-1.The results showed that the method could meet the demands of multiresidue analysis of pesticide.

关 键 词：平菇 拟除虫菊酯 农药残留 气相色谱 

分 类 号：X592[环境科学与工程—环境工程] S481.8[农业科学—农药学]