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当前位置: 首页 > 文章 > 新型QuEChERS技术气相色谱电子捕获检测器检测青菜中联苯菊酯和溴氰菊酯 农药 2018,57 (8) 589-592
Position: Home > Articles > Determination of Bifenthrin and Deltamethrin in Green Vegetables Using the New Modified Qu ECh ERS Sample Preparation Method and Gas Chromatography with Electron Capture Detection Agrochemicals 2018,57 (8) 589-592

新型QuEChERS技术气相色谱电子捕获检测器检测青菜中联苯菊酯和溴氰菊酯

作  者：
荣维广;朱铭洪;何雨恬;吉文亮;刘华良;马永建;宋宁慧
单  位：
江苏省疾病预防控制中心;环境保护部南京环境科学研究所
关键词：
联苯菊酯;溴氰菊酯;气相色谱-电子捕获检测器法;QuEChERS;青菜
摘  要：
[目的]建立了青菜中2种菊酯类农药的新型QuEChERS法提取净化,气相色谱-电子捕获检测器检测技术。[方法]研究考察了基质效应,QuEChERS法萃取技术,样品用乙腈和氯化钠均质盐析法提取,采用无水硫酸镁、PSA和Envi-carb混合填料分散萃取净化,结合气相色谱-电子捕获检测器检测,溴氰菊酯用内标法定量,联苯菊酯外标法定量。[结果]在优化的条件下,2种农药均具有较好的线性相关性,线性相关系数R~2均大于0.9991,添加回收率、相对标准偏差分别为94.2%～101.6%、1.5%～3.1%;方法的最低检出质量分数均为0.005 mg/kg。[结论]建立的青菜中2种农药残留的检测技术,方法操作简单、快速、环保、灵敏度高、准确性好。
译  名：
Determination of Bifenthrin and Deltamethrin in Green Vegetables Using the New Modified Qu ECh ERS Sample Preparation Method and Gas Chromatography with Electron Capture Detection
作  者：
RONG Wei-guang;ZHU Ming-hong;HE Yu-tian;JI Wen-liang;LIU Hua-liang;MA Yong-jian;SONG Ning-hui;Jiangsu Center for Disease Prevention and Control;Nanjing Institute of Environment Science, Department of Environmental Protection;
关键词：
bifenthrin;;deltamethrin;;gas chromatography-electron capture detection(GC-ECD);;QuEChERS;;green vegetables
摘  要：
[Aims] A new, rapid, specific and sensitive multi-residue analysis method based on the Qu ECh ERS sample preparation method and gas chromatography with electron capture detection(GC-ECD) was established. [Methods] Matrix effect and Qu ECh ERS methods were investigated. Green vegetables were extracted with acetonitrile and sodium chloride, then cleaned-up using anhydrous magnesium sulfate, PSA and Envi-carb solid phase extraction(SPE) filler,determinated using internal standard and external standard method for deltamethrin and bifenthrin in green vegetables separately. [Results] Bifenthrin and deltamethrin had good linear relation with R~2 of no less than 0.9991. The recovery rate and relative standard devition(RSD) were 94.2-101.6% and 1.5-3.1%, respectively. The method was sensitive with the limits of detection(S/N=3) of no more than 0.005 mg/kg. [Conclusions] The developed method has proved convenient, time-saving, environmental-friendly, accurate and sensitive.

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