Airborne Arsenic and Urinary Excretion of Arsenic Metabolites during Boiler Cleaning Operations in a Slovak Coal-fired Power Plant

摘要

Little information is available on the relationship between occupational exposure to inorganic arsenic in coal fly ash and urinary excretion of arsenic metabolites. This study was undertaken in a coal-fired power plant in Slovakia during a routine maintenance outage. Arsenic was measured in the breathing zone of workers during 5 consecutive workdays, and urine samples were obtained for analysis of arsenic metabolites--inorganic arsenic (As_ i ), monomethylarsonic acid (MMA), and dimethylarsinic acid (DMA)--prior to the start of each shift.