Abstract:
OBJECTIVES:In this study, biological exposure indicators were used to assess the exposure of workers to cadmium (Cd), lead (Pb), manganese (Mn), and nickel (Ni) in nonferrous metal smelters. METHODS:A total of 273 male participants (178 exposed and 95 nonexposed control group), working in nonferrous metal foundries located in southern Brazil, were evaluated based on biological indicators, environmental levels, and different types of work performed by the participants. Blood Pb (BPb), urinary Cd (UCd), urinary Mn (UMn), and urinary Ni (UNi) levels were quantified by graphite furnace atomic absorption spectrometry with Zeeman background correction. RESULTS:Significant differences between the exposed and nonexposed groups were observed for all of the analyzed elements. The average levels of BPb were higher than the recommended occupational exposure level. Relatively low concentrations were found for UCd, UMn, and UNi. CONCLUSIONS:Although metal production is an important segment of the Brazilian economy, information related to employee health in this sector is scarce. The environmental levels are determinant in occupational exposure in foundries. In companies where air levels of Pb, Cd, and Mn were above the established limits, the different types of activity did not represent an important influence on the biological levels found among workers. In situations with low air levels of these metals, the workers from the "melting" sector were actually more vulnerable.
journal_name
Toxicol Ind Healthjournal_title
Toxicology and industrial healthauthors
Dos Santos CR,da Silva CS,Nascimento ESdoi
10.1177/0748233715589262subject
Has Abstractpub_date
2016-10-01 00:00:00pages
1784-90issue
10eissn
0748-2337issn
1477-0393pii
0748233715589262journal_volume
32pub_type
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