孟买市及周边地区鸡蛋中有机氯农药残留检测

A. R. Patil, R. Zende, A. Paturkar, V. S. W. A. M. Netake
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引用次数: 1

摘要

采用气相色谱(GC) -电子捕获检测器(GC- ecd)对鸡蛋样品中DDT异构体、HCH异构体和α-内硫胺等农药残留进行定量检测。方法验证表明,所有分析物的平均加样回收率为68.64% ~ 115.62%,RSD < 10%。在5个不同来源的120份鸡蛋样品中,DDT异构体76份(63.33%),HCH异构体17份(14.16%),α-内硫胺8份(6.66%)。在马哈拉施特拉邦北部和安得拉邦采集的鸡蛋中,滴滴涕异构体的农药残留率最高(70.83%),其次是马哈拉施特拉邦西部的六氯环己烷异构体(25%),卡纳塔克邦和泰米尔纳德邦采集的α-内磺胺(12.5%)。另一方面,马哈拉施特拉邦西部地区的鸡蛋中滴滴涕异构体的感染率最低(54.16%),其次是安得拉邦的六氯环己烷异构体(8.33%),而马哈拉施特拉邦北部和西部地区的α-内硫胺的感染率为零。虽然在孟买市销售的鸡蛋含有有机氯农药残留,但没有鸡蛋样本显示其残留水平超过PFA和食品法典委员会规定的允许水平。
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Screening of Organochlorine Pesticide Residues in Chicken Eggs in and around Mumbai City
A multiresidue method was standardized using Gas Chromatography (GC) equipped with Electron Capture Detector (GC-ECD) for simultaneous detection and quantification of selected pesticide residues viz., DDT isomers, HCH isomers and α-endosulphan in chicken egg samples. Method validation revealed average recoveries ranging between 68.64% to 115.62% with percent RSD below 10% for all the analytes under study. Among all the 120 chicken egg samples analysed from five different sources, 76 (63.33%), 17 (14.16%) and 8 (6.66%) samples showed presence of DDT isomers, HCH isomers and α-endosulphan, respectively. Highest prevalence of pesticide residues was noted for DDT isomers (70.83% each) in eggs collected from northern Maharashtra and Andhra Pradesh followed by HCH isomers from western Maharashtra (25%) and for α- endosulphan from Karnataka and Tamil Nadu (12.5%). On ther hand, lowest prevalence was observed for DDT isomers (54.16%) in eggs from Western Maharashtra, followed by HCH isomers from Andhra Pradesh (8.33%) and nil for α-endosulphan from northern and western Maharashtra. Although the eggs marketed in the Mumbai city were containing organochlorine pesticide residues, none of the egg sample showed presence of residue levels in excess of permissible levels prescribed by PFA and Codex.
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