Document Detail


Determination of benzene in different food matrices by distillation and isotope dilution HS-GC/MS.
MedLine Citation:
PMID:  20579500     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Benzene is classified by the IARC as carcinogenic to humans. Several sources may contribute for the occurrence of benzene in foods, such as, environmental contamination and the reaction of benzoate salts with ascorbic acid (naturally present or added as food additives). Matrix effect on benzene recovery (e.g. in fatty foods) and artefactual benzene formation from benzoate during analysis in the presence of ascorbate are some of the challenges presented when determining benzene in a wide range of foodstuffs. Design of experiment (DOE) was used to determine the most important variables in benzene recovery from headspace GC/MS. Based on the results of the DOE, a versatile method for the extraction of benzene from all kind of food commodities was developed. The method which consisted of distillation and isotope dilution HS-GC/MS was in-house validated. Artefactual benzene was prevented by addition of a borate buffer solution (pH 11) under distillation conditions. The method presented in this study allows the use of a matrix-independent calibration with detection limits below the legal limit established by the European Council for benzene in drinking water (1 microg L(-1)).
Authors:
Raquel Medeiros Vinci; Michael Canfyn; Bruno De Meulenaer; Thibault de Schaetzen; Ilse Van Overmeire; Jacques De Beer; Joris Van Loco
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-05-17
Journal Detail:
Title:  Analytica chimica acta     Volume:  672     ISSN:  1873-4324     ISO Abbreviation:  Anal. Chim. Acta     Publication Date:  2010 Jul 
Date Detail:
Created Date:  2010-06-28     Completed Date:  2010-09-17     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0370534     Medline TA:  Anal Chim Acta     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  124-9     Citation Subset:  IM    
Copyright Information:
Copyright 2010 Elsevier B.V. All rights reserved.
Affiliation:
Department of Food Safety and Food Quality, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium.
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MeSH Terms
Descriptor/Qualifier:
Benzene / analysis*
Carcinogens / analysis*
Distillation
Food Analysis / methods*
Gas Chromatography-Mass Spectrometry / methods*
Isotopes / chemistry
Chemical
Reg. No./Substance:
0/Carcinogens; 0/Isotopes; 71-43-2/Benzene

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


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