气相色谱法测定蔬菜水果中氟虫腈等6种农药残留  

Simultaneous Determination of Residues of Fipronil ect.Six Pesticides in Vegetable and Fruits by Gas Chromatography with Electron Capture Detector

作　　者：叶倩[1,2] 邓义才[1,3] 路大海 骆冲 梁应坤 丁海权 

机构地区：[1]广东省农业科学院农产品公共监测中心,广州510640 [2]农业部农产品质量安全检测与评价重点实验室,广州510640 [3]农业部农产品质量安全风险评估实验室(广州),广州510640

出　　处：《农药》2016年第1期51-54,共4页Agrochemicals

基　　金：国家农产品质量安全风险评估项目(GJFP201500102);国家星火计划项目(2012GA780001)

摘　　要：[目的]为建立同时测定蔬菜水果中氟虫腈、氟啶脲、二甲戊灵、虫螨腈、哒螨灵和苯醚甲环唑残留的气相色谱(GC-ECD)分析方法。[方法]样品用乙腈提取后,经氨基固相萃取小柱净化,GC-ECD检测,基质匹配外标法定量。[结果]6种供试农药在0.02~4.0 mg/L范围内具有良好的线性关系,相关系数(r^2)为0.9982以上,在0.08、0.16、0.80 mg/kg添加水平下平均回收率为72.3%~111.4%;相对标准偏差RSD为0.7%~12.4%。[结论]该方法准确、灵敏、简单、高效,适用于同时测定蔬菜水果中这6种农药的残留量。[Aims] An analytical method for simultaneous determination of fipronil, chlorfluazuron, pendimethalin, chlorfenapyr, pyridaben and difenoconazole residues in vegetable and fruits by using gas chromatography with electron capture detector （GC-ECD） was developed. [Methods] The residues in samples were extracted with acetonitrile, and cleaned-up on NH2-SPE column. The results were quantifed by matrix matched external standard method. [Results] The results showed that good linearity was obtained when the concentration was ranged from 0.02 to 4.0 mg/L, and correlation coefficients were above 0.9982. When the fortified levels were 0.08, 0.16 and 0.80 mg/kg, the average recoveries were ranged from 72.3 to 111.4%, and the relative standard deviations （RSD） were ranged from 0.7 to 12.4%, respectively. [Conclusions] The method has the advantage of high accuracy and sensitivity, rapid and effective, which is suitable for simultaneous determination of fipronil ect. six pesticide residues in vegetable and fruits.

关 键 词：氟虫腈 气相色谱 农药残留 蔬菜 水果 

分 类 号：TQ450.26[化学工程—农药化工] O657.71[理学—分析化学]