GC-MS/MS测定花椒中7种多氯联苯  

Determination of 7 Polychlorinated Biphenyls in Pepper by GC-MS/MS

作　　者：王行智 张婕 闫君 赵波 张文 WANG Xingzhi;ZHANG Jie;YAN Jun;ZHAO Bo;ZHANG Wen(Lanzhou Food and Drug Inspection Institute,Lanzhou 730000,China)

机构地区：[1]兰州市食品药品检验检测研究院,甘肃兰州730000

出　　处：《食品安全导刊》2024年第24期123-126,130,共5页China Food Safety Magazine

基　　金：甘肃省药品监督管理局科技计划项目(2022GSMPA0066);兰州市科技计划项目(2023-ZD-230)。

摘　　要：目的:建立气相色谱-串联质谱法(Gas Chromatography-Tandem Mass Spectrometry,GC-MS/MS)测定花椒中7种多氯联苯(Polychorinated Biphenyls,PCBs)的方法。方法:样品经正己烷-丙酮提取,QuEChRS净化包净化,采用GC-MS/MS进行分离、分析检测。结果:7种PCBs在质量浓度为0~200 ng·mL^(-1)时具有良好的线性关系,检出限和定量限均满足实验需求。在10 ng·mL^(-1)、50 ng·mL^(-1)、200 ng·mL^(-1)3个加标水平下,平均回收率在91.55%~95.36%,相对标准偏差为1.6%~3.2%。结论:该方法前处理简单、提取及分离效果良好、回收率高,适用于花椒中7种PCBs残留量的快速监测。Objective:To establish a gas chromatography-tandem mass spectrometry(GC-MS/MS)method for the determination of 7 polychorinated biphenyls(PCBs)in pepper.Method:The sample was extracted with n-hexane-acetone,purified by QuEChRS purification package,and separated by GC-MS/MS.Result:The 7 types of PCBs have a good linear range at a mass concentration of 0 ng·mL^(-1)to 200 ng·mL^(-1),and the detection limit and quantification limit of the method can meet the experimental requirements.At three levels of 10 ng·mL^(-1),50 ng·mL^(-1),200 ng·mL^(-1),the average recovery rates were 91.55%to 95.36%,and the relative standard deviation was 1.6%to 3.2%.Conclusion:The method has simple pretreatment,good extraction and separation effect,high recovery rate,and is suitable for rapid monitoring of 7 PCBs residues in pepper.

关 键 词：多氯联苯(PCBs) QUECHERS 气相色谱-串联质谱联用法(GC-MS/MS) 花椒 

分 类 号：TS264.3[轻工技术与工程—发酵工程] O657.63[轻工技术与工程—食品科学与工程]