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当前位置: 首页 > 文章 > QuEChERS-气相色谱-串联质谱测定牛奶中有机氯农药及多氯联苯的分析 食品科学 2018 (8) 309-313
Position: Home > Articles > Determination of Organochlorine Pesticides and Polychlorinated Biphenyls in Milk by QuEChERS-Gas Chromatography-Tandem Mass Spectrometry FOOD SCIENCE 2018 (8) 309-313

QuEChERS-气相色谱-串联质谱测定牛奶中有机氯农药及多氯联苯的分析

作  者：
付文雯;罗彤;朱影;周陶鸿;文红;王会霞
单  位：
湖北省食品质量安全监督检验研究院
关键词：
气相色谱-串联质谱(GC-MS/MS);QuEChERS;有机氯农药;多氯联苯;牛奶
摘  要：
建立快速测定牛奶中有机氯及多氯联苯残留量的气相色谱-串联质谱(gas chromatography-tandem mass spectrometry,GC-MS/MS)分析方法。样品经30%硫酸-甲醇预处理,正己烷提取,Qu ECh ERS净化,GC-MS/MS测定,基质标准曲线定量。结果表明,待测物质在5～200μg/L范围内线性关系良好,相关系数大于0.99,检出限为0.1～0.3μg/kg,样品平均加标回收率为85.5%～115.2%,相对标准偏差小于10%(n=6)。该方法简单、准确、高效,可用于牛奶样品中有机氯及多氯联苯残留的快速筛查和定量检测。
译  名：
Determination of Organochlorine Pesticides and Polychlorinated Biphenyls in Milk by QuEChERS-Gas Chromatography-Tandem Mass Spectrometry
作  者：
FU Wenwen;LUO Tong;ZHU Ying;ZHOU Taohong;WEN Hong;WANG Huixia;Hubei Provincial Institute for Food Supervision and Test;
关键词：
gas chromatography-tandem mass spectrometry(GC-MS/MS);;QuEChERS;;organochlorine pesticides;;polychlorinated biphenyls;;milk
摘  要：
A gas chromatography-tandem mass spectrometry(GC-MS/MS) method was developed for the analysis of organochlorine pesticides(OCP) and polychlorinated biphenyls(PCBs) in milk. Samples were pre-processed with 30%sulfuric acid-methanol, and then extracted with n-hexane. The supernatant extract was purified by a modified quick, easy, cheap, effective, rugged and safe(Qu ECh ERS) extraction procedure, and the purified extract was detected by GC-MS/MS and quantified by the matrix standard calibration curve method. The results showed that all the target analytes displayed good linear relationships in the range of 5–200 μg/L with correlation coefficients more than 0.99. The limits of detection(LODs) of OCPs and PCBs ranged from 0.1 to 0.3 μg/kg. The average recoveries of OCPs and PCBs from spiked samples were in the ranges of 85.5%–115.2%, with relative standard deviations(RSDs) less than 10%(n = 6). In summary, the proposed method due to its simplicity, high accuracy and efficiency could be used for the rapid screening and quantitative analysis of organochlorine pesticide and polychlorinated biphenyls in milk.

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