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Published on: June 21, 2015
A study of factors influencing urinary arsenic excretion in exposed workers
Luigi Vimercati1, Antonio Carrus, Giuseppe Sciannamblo
1Department of Internal Medicine and Public Health, Section of Occupational Medicine B. Ramazzini, University of Bari, Bari, Italy. l.vimercati@medlav.uniba.it
Abstract:
This study was designed to evaluate the influence of occupational and non-occupational factors on urinary arsenic excretion in workers exposed to iAs (inorganic arsenic) in the dismantlement of a factory which once produced fertilisers. We measured iAs and its methylated metabolites in 108 urinary samples of workers exposed to iAs in July 2006. A total of 13.9% of the samples showed levels higher than the Biological Exposure Index (BEI) of 35 microg/l (mean value 23.9 microg/l). After the improvement of working conditions, in August-October 2006 we collected urinary samples from each of the 108 workers enrolled. We also administrated a questionnaire, in order to investigate the influence of occupational and non-occupational factors on the urinary arsenic excretion. A significant difference was observed in relation with seafood consumption and age stratification. We have found a significant reduction of urinary arsenic excretion between the two phases of biological monitoring, probably due to appropriate hygiene work-related interventions.
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