加速溶剂萃取-FMS净化-高分辨气相色谱-高分辨质谱(HRGC-HRMS)定量测定鱼组织中二(噁)英类多氯联苯

多氯联苯(polychlorinated biphenyls,PCBs)是一类包括209种化合物的持久性有机污染物,是斯德哥尔摩公约中优先控制的12类持久性有机污染物之一,曾经大量生产用于变压器和电容器内的绝缘介质、热交换剂、润滑剂、增塑剂等[1],全球共生产150万吨多氯联苯[2-3]。在209种PCBs中有1

Determination of Polychlorinated Biphenyls(PCBs)in Fish Tissue by Accelerated Solution Extraction, Fluid Management Systems, High Resolution Gas Chromatography/High Resolution Mass Spectrometry

A rapid,sensitive and accurate method has been developed for the determination of twelve dioxin-like polychlorinated biphenyls(PCBs) in fish tissue using isotope dilution high resolution gas chromatography-high resolution mass spectrometry (HRGC-HRMS).Dioxin-like PCBs was extracted from samples by Accelerated Solution Extraction (ASE) and purified by Fluid Management Systems (FMS).Confirmation and quantitative analysis at pg/g level of PCBs was performed by HRGC-HRMS using voltage selective ion record(VSIR)mode.The recoveries of twelve isotopically labeled compound solution were found to be in the range of 64.9%-103.8%.The quantitative detection limits of the method for dioxin-like PCBs are 0.1 pg/g.This method not only meets the requirements of international standard,but also shortens the analysis time from a period of 2 weeks to 2 days.