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Simultaneous Determination of Polychlorinated Biphenyl 101 (PCB101) and Its Hydroxylated, Methoxylated and Methyl Sulfonated Metabolites in Aquatic Organisms by Solid-Phase Extraction (SPE) and Gas Chromatography-Microelectron Capture Detection (GC-mu ECD)

文献类型： 外文期刊

作者： Wang, Shuai 1 ; Huang, Xunyun 1 ; Wang, Mengyuan 1 ; Tian, Liangliang 1 ; Li, Xiaolei 4 ; Kong, Cong 1 ; Han, Feng 1 ; Lo 1 ;

作者机构： 1.Chinese Acad Fishery Sci, Fishery Prod Qual Inspect & Test Ctr Shanghai, East China Sea Fisheries Res Inst, Minist Agr & Rural Affairs China, 300 Jungong Rd, Shanghai, Peoples R China

2.Shanghai Ocean Univ, Coll Food Sci & Technol, Shanghai, Peoples R China

3.Linquan Cty Agr Prod Qual & Safety Inspect Stn, Linquan, Anhui, Peoples R China

4.Guangdong Ocean Univ, Coll Ocean & Meteorol, Zhanjiang, Peoples R China

关键词： Gas chromatography-microelectron capture detection (GC-mu ECD); metabolites; polychlorinated biphenyl 101 (PCB 101); silylation derivatization; solid-phase microextraction (SPE)

期刊名称：ANALYTICAL LETTERS （ 影响因子：2.329； 五年影响因子：1.738 ）

ISSN： 0003-2719

年卷期：

页码：

收录情况： SCI

摘要： Polychlorinated biphenyls (PCBs), a group of persistent organic pollutants, are ubiquitous in the environment. The concentrations of PCBs and their metabolites are crucial to understand their impact on the environment. Here, a simultaneous method is reported to determine PCB101 and its hydroxylated, methoxylated and methyl sulfonated metabolites in aquatic organisms by gas chromatography-microelectron capture detection (GC-lECD). Several operational parameters, including the extraction solvent, volume of concentrated sulfuric acid for lipid removal, elution procedure, and solid-phase extraction (SPE) eluent volume, were optimized for the analytes in the muscle tissue of carp (Carassius auratus). Under the optimum conditions, the linearity of the method was from 2.5 to 100 ng/mL with correlation coefficients (R-2) > 0.9961. The limit of detection was 2.00 lg/kg, and the limit of quantitation was equal to 5.00 lg/kg. The spiked recoveries of the targets in carp muscles were from 84.4% to 104%, and the relative standard deviation (RSD) was from 4.02% to 8.75%. The developed method was successfully applied to different aquatic samples. The precursor and metabolites were simultaneously detected in aquatic products. The metabolites of PCBs were present in marine samples collected from the East China Sea. For the first time, the methoxylated metabolite of PCB101 was identified in aquatic organisms. The results provide support for further study on the environmental properties and biological transmission of PCBs.

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