Estimate the chronic daily intake of 1,1,1-trichloroethane from exposure to a city water supply that contains a 1,1,1-trichloroethane concentration equal to the drinking water standard of 0.2 mg/L. Assume the exposed individual is a child who consumes water at the child rate for 5 years, that he swims once a week for 30 min, and that he takes a short (10 min) bath every day. Assume his average body weight over the exposure period is 8. Assume that the average air concentration of 1,1,1-trichloroethane during the bath is 2 µg/m^3. Assume the dermal uptake from water (PC) is 0.006 m/hr and that direct dermal absorption during bathing is no more than 50% of the available 1,1,1-trichloroethane because he is not completely submerged.
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Estimate the chronic daily intake of 1,1,1-trichloroethane from exposure to a city water supply that...
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