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  1. Polychlorinated dibenzo-p-dioxin and dibenzofuran levels and patterns in polyvinylchloride and chloralkali industry workers.

    Article - En anglais

    The production of chlorine and vinyl chloride (VCM) is associated with the formation of polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs).

    The objective of the present study was to determine whether the levels and congener patterns of PCDDs and PCDFs in the blood of workers involved in the production of such substances could be related to their occupational environment.

    PCDD and PCDF levels in blood plasma from VCM and chloralkali workers and in referents were determined by means of high-resolution gas chromatography/high resolution mass spectrometry (HRGC/HRMS) techniques and the results were evaluated through principal component analysis (PCA).

    The overall levels of PCDDs and PCDFs were low, but the relative congener distribution detected in the workers differed from that found in the referents. 1,2,3,4,6,7,8-HpCDF, 1,2,3,4,7,8-and 1,2,3,6,7,8-HxCDFs are congeners related to work in VCM and chloralkali industries.

    Exposure to PCDDs and PCDFs in these industrial environments changes the congener-distribution pattern in the blood of workers as compared with referents.

    A combination of isomer-specific analysis of PCDDs and PCDFs in blood plasma and PCA is suitable for the differentiation between nonoccupational and occupational exposure and provides a means of assessing workers'exposure situation in different occupational settings.

    Mots-clés Pascal : Industrie chimique, Vinylique chlorure polymère, Exposition professionnelle, Médecine travail, Homme, Dibenzofurane(polychloro), Dibenzo-p-dioxine(polychloro), Surveillance biologique, Plasma sanguin, Procédé chloracali

    Mots-clés Pascal anglais : Chemical industry, Polyvinyl chloride, Occupational exposure, Occupational medicine, Human, Biological monitoring, Blood plasma

    Logo du centre Notice produite par :
    Inist-CNRS - Institut de l'Information Scientifique et Technique

    Cote : 97-0405187

    Code Inist : 002B03L06. Création : 19/12/1997.