Journal
SCIENCE OF THE TOTAL ENVIRONMENT
Volume 368, Issue 1, Pages 335-343Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.scitotenv.2005.09.069
Keywords
mercury; urine; chloralkali; air; amalgam; Poland
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We conducted a study within the framework of the interdisciplinary European Mercury Emission from Chloralkali Plants (EMECAP) project to assess exposure to mercury (Hg) and the contribution of Hg emissions from a mercury cell chloralkali plant to urinary mercury (U-Hg) in adults living near the plant. We collected data from questionnaires and first morning urine samples from 75 subjects living near the Tarnow plant in Poland and 100 subjects living in a reference area. Median U-Hg was 0.32 mu g/g creatinine (mu g/gC) and 0.20 mu g/gC, respectively. The median U-Hg was also higher in the amalgam-free subjects living near the plant (0.26 mu g/gC) than in the reference group (0.18 mu g/gC), but no such association was found in a multivariate analysis. There was a statistically significant positive association between U-Hg and number of teeth with amalgams, a negative association with age and a tendency towards higher U-Hg in female subjects. In the amalgam-free subjects there were statistically significant effects of female sex and fish consumption, and a negative association with age. The additional long-term average air Hg concentration from the plant, based on EMECAP environmental measurements and modelling, was estimated to be 1-3.5 ng/m(3) for the residential study area and should have a very small effect on U-Hg. The other Hg emission sources such as coal combustion facilities located nearby should be taken into account in assessing the overall impact of air Hg on U-Hg in this area. (c) 2005 Elsevier B.V All rights reserved.
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