Tetrachloroethene in exhaled air of persons living near polution sources

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Abstract
Exhaled air was analyzed for tetrachloroethene (PER) in teachers and 4–5-year-old pupils of a kindergarten situated near a factory, and in residents of an old folks' home situated near a former chemical waste dump. The PER concentrations were higher in the exhaled air of children living near the factory (mean 24 μg/m3, n=6) than in control children (mean 2.8 μg/m3, n=11). In the old folks' home, the PER concentrations in the exhaled air of people living on the first floor were higher (mean 7.8 μg/m3, n=10) than in the exhaled air of the people living on the second floor and higher (mean 1.8 μg/m3, n=19). From the results of this study, it is clear that in environmental exposure to tetrachloroethene, biological monitoring of exhaled air is a simple, efficient, effective and convenient method of assessing total ambient exposure of both young and aged subjects.

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