Determination of Cd, Pb and Ni by Square Wave Stripping Voltammetry in Particulate Matter Collected in Workplace Atmosphere of some Brazilian Industrial Foundries
نویسندگان
چکیده
A concentração de Cd, Pb e Ni em material particulado atmosférico coletado no ambiente de trabalho de três fundições localizadas no município de Loanda, Paraná, Brasil, foram determinadas por voltametria de onda quadrada e ICP OES. Os resultados mostram que os trabalhadores estão sendo sistematicamente expostos a concentrações de Cd e Pb que são significativamente maiores do que o Limite de Concentração recomendado pela American Conference of Governmental Industrial Hygienists (ACGIH). Os resultados obtidos pelo método eletroanalítico não diferem significativamente dos resultados obtidos por ICP OES, indicando a potencialidade de sua aplicação no monitoramento destes ambientes com menores custos de implementação, operação e manutenção. Baseando-se nos resultados obtidos, alterações tecnológicas no processo de produção foram recomendadas, bem como a utilização de equipamentos de proteção individual no sentido de conservar a saúde e o bem estar dos trabalhadores, minimizando os danos ao ambiente externo.
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