Trichloroethylene in urine as biological exposure index

M. Imbriani, Q. Niu, S. Negri, S. Ghittori

Research output: Contribution to journalArticle


Occupational exposure to trichloroethylene (TRI) was studied by analysis of environmental air and urine from 49 workers operating in a special printing house on glass. For the measurement of environmental concentration of TRI (Cenv), the ambient air was sampled using personal passive dosimeters. The activated charcoal was desorbed with carbon disulfide and injected into a gascromatograph - mass spectrometer (GC-MSD). The biological monitoring of exposed workers was conducted by determining the concentration of TRIin urine (Curine). Urine concentration of TRI was determined by headspace analysis using GC-MSD. Significant correlation was found between the environmental TRI concentration and urinary TRI concentration. The use of a regression equation between Curine (μg/l) and Cenv (mg/m3) (Curine = 0.081 × Cenv + 4.27) resulted in a value of Curine corresponding to Threshold Limit Value-Time Weighted Average (TLV-TWA) exposure value (269 mg/m3) of 26.0 μg/L.

Original languageEnglish
Pages (from-to)225-230
Number of pages6
JournalIndustrial Health
Issue number3
Publication statusPublished - 2001


  • Biological exposure index
  • Trichloroethylene
  • Urine

ASJC Scopus subject areas

  • Environmental Science(all)
  • Environmental Chemistry
  • Public Health, Environmental and Occupational Health
  • Toxicology
  • Health, Toxicology and Mutagenesis

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