Abstract
Abstract Biological monitoring of exposure to industrial chemicals commonly involves laboratory analyses of a toxicant or metabolites in urine. The American Conference of Governmental Industrial Hygienists has recommended biological exposure indices for methanol exposure based on methanol and formate in urine. The present study was designed primarily to evaluate methanol in urine and other potential biological determinants of methanol exposure. Volunteer subjects underwent controlled exposure to methanol vapor at different concentrations for approximately 8 hours to simulate a standard work shift. Urine was collected immediately prior to exposure sessions, during exposures, and immediately following cessation of exposures. Samples were analyzed for methanol, formate, specific gravity (SpGr), and creatinine. The following biological determinants were examined: total methanol excreted during the shift; mean concentration of methanol excreted during the shift (uncorrected, and corrected for SpGr and creatini...
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