食品科学2018，Vol.39Issue(6)：307-314,8.DOI:10.7506/spkx1002-6630-201806048
QuEChERS-气相色谱-串联质谱法测定蔬菜中35种多氯联苯
Determination of 35 Polychlorinated Biphenyls in Vegetables by Quick, Easy, Cheap, Effective, Rugged and Safe (QuEChERS) Extraction Coupled with Gas Chromatography-Tandem Mass Spectrometry
摘要
Abstract
A quick,easy,cheap,effective,rugged and safe (QuEChERS) extraction coupled with gas chromatography-tandem mass spectrometry (GC-MS/MS) method was developed for the determination of 35 polychlorinated biphenyls (PCBs) in vegetables.The sample was extracted using a solid-phase extraction column and QuEChERS with ethyl acetate as the extraction solvent,and then the extract was dried with anhydrous magnesium sulfate and cleaned up with primary secondary amine (PSA)/graphitized carbon black solid-phase extraction cartridge before being analyzed by GC-MS/MS under the selective reaction monitoring (SRM) mode and quantified by internal standard method.The results showed that the calibration curves for all target analytes displayed good linear relationships over the concentration range of 10-1 000 μg/L,with correlations coefficients of more than 0.999.The limits of detection (LODs) were 0.65-18.12 ng/kg.The average recoveries of 35 compounds at three spiked levels of 0.01,0.02 and 0.10 mg/kg ranged from 72.3％ to 119.0％,with relative standard deviations of 0.4％ to 9.8％.The simplicity,rapidity,sensitivity and accuracy of the method make it suitable for rapid detection of PCB residues in vegetables.关键词
QuEChERS/气相色谱-串联质谱/多氯联苯/蔬菜Key words
QuEChERS/gas chromatography-tandem mass spectrometry (GC-MS/MS)/PCBs/vegetables分类
轻工纺织引用本文复制引用
谢思思,卢俊文,李蓉,张宪臣,张朋杰,容裕棠,陈丽斯,谢丽芳..QuEChERS-气相色谱-串联质谱法测定蔬菜中35种多氯联苯[J].食品科学,2018,39(6):307-314,8.基金项目
广东省省级科技计划项目(2014A040401011 （）
2015A050502010) （）
广东检验检疫局科技计划项目(2017GDK24) （2017GDK24）
中山市科技计划项目(2016B2168) （2016B2168）
中山市重大社会公益项目(2017B1029) （2017B1029）
