%0 Journal Article
%T Solutions to matrix-induced response enhancement in pesticide residue analysis by gas chromatography<br>气相色谱分析农药残留的基质效应及其解决方法
%A HE Limin
%A LIU Xiangguo
%A ZENG Zhenling
%A <br>贺利民
%A 刘祥国
%A 曾振灵
%J 色谱
%D 2008
%I 
%X The sample matrix can cause an enhancement in the observed chromatographic response for pesticide residues in a matrix extract compared with the same concentration in a matrix-free solution. The matrix increases the transfer of pesticides from the hot vaporizing injectors by reducing the thermal stress for labile compounds and by masking the active sites in the injector responsible for the adsorption or decomposition of polar pesticides. The use of different injector types and matrix simplification procedures can reduce matrix-induced enhancement but do not eliminate it. The most effective strategy is to use matrix-matched calibration standards or analyte protectants which equalize the response enhancement for calibration standards and sample extracts. From a practical point of view, it is important that the method used to correct for matrix-induced enhancement is compatible with low system maintenance. The different approaches for correcting matrix-induced enhancement for calibration in pesticide residue analysis are discussed and compared in this review.
%K gas chromatography (GC)
%K pesticide residue
%K matrix-induced response enhancement
%K solutions<br>气相色谱
%K 农药残留
%K 基质效应
%K 解决方法
%K 相色谱分析
%K 农药
%K 残留量
%K 基质效应
%K 净化方法
%K gas
%K chromatography
%K residue
%K analysis
%K pesticide
%K enhancement
%K response
%K 分析检测
%K 维护
%K 仪器系统
%K 补偿
%K 分析保护剂
%K 校准法
%K 匹配
%K 完全
%K 进样方式
%K 色谱柱
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=6579068328FE643F&jid=4D81E042D77AFEC6881D14759692069C&aid=C94E66F51785707444E2E4CE78211326&yid=67289AFF6305E306&vid=96C778EE049EE47D&iid=CA4FD0336C81A37A&sid=10F298ED9F164662&eid=DBF54A8E2A721A6D&journal_id=1000-8713&journal_name=色谱&referenced_num=7&reference_num=57