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Manganese (Mn) exposure and Mn levels in blood and hair were studied in garage mechanics and blue collar workers in Montreal. The mechanics were occupationally exposed to methylcyclopentadienyl-manganese-tricarbonyl, while the blue collar workers served as controls. Data for data on demographic factors, food/drug consumption, living habits, and medical status were collected. Environmental and dietary monitoring were performed, and blood and hair samples were obtained for Mn and iron (Fe) content analysis. Mechanics were exposed to significantly higher levels of Mn and Fe in workplace air and had significantly higher Mn hair levels and total absorbed doses (AD) of Mn, compared to the controls. Food contributed more than 95% of the Mn AD. Inhalation of Mn accounted for less than 1% of the AD while inhalation of Fe accounted for 26% of the AD for mechanics. The authors conclude that current Mn levels in food and air do not pose a significant problem.
International Archives of Occupational and Environmental Health, 67(2):101-110, 1995. (64 references)
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