吡唑醚菌酯·苯醚甲环唑在黄瓜及土壤中的残留分析  

Determination of Pyraclostrobin·Difenoconazole Residues in Cucumber and Soil

作　　者：杨珂[1] 李雪生[1] 刘晓亮[1] 赵锋[1] 谭辉华[1] 曾东强[1] 

机构地区：[1]广西大学农药与环境毒理研究所,南宁530005

出　　处：《农药》2016年第11期832-834,共3页Agrochemicals

基　　金：国家现代农业产业技术体系广西创新团队建设项目[大宗蔬菜产业功能专家(nycytxgxcxtd-03-10)]

摘　　要：【目的】建立同时检测吡唑醚菌酯·苯醚甲环唑在黄瓜和土壤中的残留检测方法。【方法】样品用乙腈提取，N-丙基乙二胺（PSA）净化，GC-μECD检测。【结果】在优化条件下，吡唑醚菌酯和苯醚甲环唑在0．02-1mg／kg范围内线性关系良好，对于黄瓜和土壤的空白样品，在0．05、0．5、1mg／kg三个添加水平下，吡唑醚菌酯在黄瓜和土壤中的回收率分别为87．8％～109．2％、89．5％～101．1％，相对标准偏差分别为2.3％-12．0％、7．7％-18．3％；苯醚甲环唑在黄瓜和土壤中的回收率分别为100．4％～107．7％、87．0％～105．2％，相对标准偏差分别为5．7％～12．4％、6．4％-10．8％。【结论】建立了适合于黄瓜及土壤中吡唑醚菌酯和苯醚甲环唑残留检测的方法，具有简便、准确等特点。[Aims] An analytical method was established to determine pyraclostrobin .difenoconazole residues in cucumber and soil. [Methods] The samples were extracted with acetonitrile, and cleaned up with primary-secondary amine （PSA）. The residues of pyraclostrobin, difenoconazole were determined by gas chromatography with electronic capture detector （GC-p, ECD）. [Results] The results showed that under the optimum condition, when the concentrations of pyraclostrobin and difenoconazole were 0.02-1 mg/kg, the linear ralation was good. When the fortification levels were 0.05, 0.5 and 1 mg/kg, the recoveries of pyraclostrohin in cucumber and soil were 87.8-109.2, 89.5-101.1%, the relative standard deviations were 2.3-12.0, 7.7-18.3%. The recoveries of difenoconazole in cucumber and soil were 100.4-107.7, 87.0-105.2%, the relative standard deviations were 5.7-12.4%, 6.4-10.8%. [Conclusions] The method is simple and precise, which is suitable for determination ofpyraclostrobin and difanoconazole residues in cucumber and soil.

关 键 词：吡唑醚菌酯 苯醚甲环唑 黄瓜 土壤 残留分析 

分 类 号：S481.8[农业科学—农药学]