PMID: 9192469Jun 1, 1997Paper

Background contamination by coplanar polychlorinated biphenyls (PCBs) in trace level high resolution gas chromatography/high resolution mass spectrometry (HRGC/HRMS) analytical procedures

Chemosphere
J FerrarioA Dupuy

Abstract

The addition of the "dioxin-like" polychlorinated biphenyl (PCB) congeners to the assessment of risk associated with the 2,3,7,8-chlorine substituted dioxins and furans has dramatically increased the number of laboratories worldwide that are developing analytical procedures for their detection and quantitation. Most of these procedures are based on established sample preparation and analytical techniques employing high resolution gas chromatography/high resolution mass spectrometry (HRGC/HRMS), which are used for the analyses of dioxin/furans at low parts-per-trillion (ppt) levels. A significant and widespread problem that arises when using these sample preparation procedures for the analysis of coplanar PCBs is the presence of background levels of these congeners. Industrial processes, urban incineration, leaking electrical transformers, hazardous waste accidents, and improper waste disposal practices have released appreciable quantities of PCBs into the environment. This contamination has resulted in the global distribution of these compounds via the atmosphere and their ubiquitous presence in ambient air. The background presence of these compounds in method blanks must be addressed when determining the exact concentrations o...Continue Reading

Citations

Apr 28, 2011·Environmental Toxicology and Chemistry·Sarah B GewurtzSean M Backus
Aug 13, 2009·Mass Spectrometry Reviews·Eric J Reiner
Dec 13, 2005·Chemosphere·Stanislav JursaJuraj Loksa
Jul 13, 2016·Environmental Pollution·John Kennedy MwangiGuo-Ping Chang-Chien
May 14, 2003·Journal of Exposure Analysis and Environmental Epidemiology·John SchaumKimberlea Andrews
Nov 21, 2019·Environmental Science and Pollution Research International·Yi XingZhiliang Ma
Mar 20, 2003·Journal of Agricultural and Food Chemistry·Serena LaschiMarco Mascini

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