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    Arch Environ Health. 1991 May-Jun;46(3):174-8.

    A comparative study of human levels of trichloroethylene and tetrachloroethylene after occupational exposure.

    Skender LJ, Karacić V, Prpić-Majić D.

    Source

    Institute for Medical Research and Occupational Health, University of Zagreb, Yugoslavia.

    Abstract

    The rate of trichloroethylene (TRI) and perchloroethylene (PER) absorption was investigated in workers who were (1) occupationally exposed to TRI in four dry-cleaning shops (Group 1, n = 10) and (2) occupationally exposed to PER in one dry-cleaning shop (Group 2, n = 18). Concentrations of TRI and PER in blood were analyzed, and concentrations of trichloroethanol (TCE) and trichloroacetic acid (TCA) in blood and urine were analyzed. Results varied widely: PER was found in the blood of workers in group 1, but TRI was not detected in blood from any worker in group 2; most blood samples from group 2 workers did not contain a detectable quantity of TCE, and urine TCE concentrations in this group were very low. During the work week, a significant difference was found in group 1 for TRI in blood and TCE in blood and urine. In group 2, however, the only significant difference during the work week was for PER in blood. Therefore, the most reliable biological indicators for TRI and PER exposure are TCE in blood and PER in blood, respectively.

    PMID:
    2039273
    [PubMed - indexed for MEDLINE]

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