Document Detail


An improved clean-up strategy for simultaneous analysis of polychlorinated dibenzo-p-dioxins (PCDD), polychlorinated dibenzofurans (PCDF), and polychlorinated biphenyls (PCB) in fatty food samples.
MedLine Citation:
PMID:  11936114     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The study and extension of a simple automated clean-up method for polychlorinated dibenzo-p-dioxins (PCDD) and polychlorinated dibenzofurans (PCDF) to a broad range of polychlorinated biphenyls (PCB) is described. The isolation of seven PCDD, ten PCDF, and three coplanar PCB (cPCB) is extended to eight monoortho substituted PCB and seven so-called "marker PCB" (Aroclor 1260) for fatty food samples. This enables quantification of 35 compounds - including all congeners with a WHO toxic equivalent factor (TEF)--in a single extraction and single purification step. The chromatographic behaviour of mono-ortho PCB and marker PCB on a variety of adsorbents, including basic alumina, has been studied. Partitioning of analytes through multi-column sequences is described and correlated with their structural and electronic properties, by use of molecular modelling calculations. The fractionation process available with the Power-Prep automated clean-up system enables rapid independent analysis of the different groups of compounds. Gas chromatography with high resolution mass spectrometry (GC-HRMS) is used for the PCDD/F and cPCB fraction and quadrupole ion-storage tandem in time mass spectrometry (GC-QISTMS) for analysis of the remaining PCB. A comparison study was performed on quality-control samples and real fatty food samples to evaluate the robustness of the new strategy compared with a reference method. On the basis of this simultaneous clean-up, a rapid simplified strategy for PCDD/F and selected PCB analysis determination is proposed for fatty food samples.
Authors:
Catherine Pirard; Jean-François Focant; Pauw Edwin De
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Publication Detail:
Type:  Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Analytical and bioanalytical chemistry     Volume:  372     ISSN:  1618-2642     ISO Abbreviation:  Anal Bioanal Chem     Publication Date:  2002 Jan 
Date Detail:
Created Date:  2002-04-08     Completed Date:  2003-03-21     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  101134327     Medline TA:  Anal Bioanal Chem     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  373-81     Citation Subset:  IM    
Affiliation:
Mass Spectrometry Laboratory, University of Liege, Belgium.
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MeSH Terms
Descriptor/Qualifier:
Animals
Automation
Benzofurans / analysis
Chemical Fractionation
Environmental Pollutants / analysis*
Food Contamination / analysis*
Gas Chromatography-Mass Spectrometry / standards
Hydrocarbons, Chlorinated / analysis*
Meat / analysis
Models, Molecular
Polychlorinated Biphenyls / analysis
Quality Control
Reference Standards
Tetrachlorodibenzodioxin / analogs & derivatives*,  analysis
Chemical
Reg. No./Substance:
0/Benzofurans; 0/Environmental Pollutants; 0/Hydrocarbons, Chlorinated; 0/Polychlorinated Biphenyls; 0/chlorinated dibenzofurans; 0/polychlorodibenzo-4-dioxin; 1746-01-6/Tetrachlorodibenzodioxin

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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