分散固相萃取-气相色谱-串联质谱法测定蔬菜中多环芳烃及卤代多环芳烃

摘要

A method was developed for determination of 16 polycyclic aromatic hydrocarbons and 11 halogenated polycyclic aromatic hydrocarbons in vegetables by gas chromatography-tandem mass spectrometry(GC-MS/MS).The analytes were extracted from the vegetable samples by hexane,and purified by dispersion solid phase extraction using PSA and C18 sorbent,then analyzed by gas chromatography-tandem mass spectrometry (GC-MS/MS) with external standard method.The recoveries were in the range of 74.7％-115.1％,and the relative standard deviations (RSD) were 1.6％-15.3％ at three spiked levels of 50,100 and 200 μg/kg for 16 polycyclic aromatic hydrocarbons and 11 halogenated polycyclic aromatic hydrocarbons.The limits of quantification (LOQ) for all analytes were 0.03-7.39 μg/kg.%建立了同时检测蔬菜中16种多环芳烃(PAHs)和11种卤代多环芳烃(X-PAHs)污染水平的分散固相萃取-气相色谱-串联质谱(GC-MS/MS)分析方法.样品中的多环芳烃和卤代多环芳烃经正己烷提取,N-丙基乙二胺吸附剂(PSA)和十八烷基键合硅胶吸附剂(C18)分散固相萃取净化剂净化,气相色谱-串联质谱方法测定,外标法定量.16种PAHs和11种X-PAHs在50,100和200 μg/kg添加浓度下的回收率为74.7％～115.1％,相对标准偏差为1.6％～15.3％,方法检出限为0.03 ～ 7.4 μg/kg.