Estudo da contaminação de poços rasos por combustíveis orgânicos e possíveis conseqüências para a saúde pública no Município de Itaguaí, Rio de Janeiro, Brasil

Cadernos de Saúde Pública

Rosimar Lima Brandão Silva²  Cristina Maria Barra¹  Teófilo Carlos Do Nascimento Monteiro²  Ogenis Magno Brilhante¹ 

[1] ,Fundação Oswaldo Cruz Escola Nacional de Saúde Pública Departamento de Saneamento e Saúde AmbientalRio de Janeiro RJ ,Brasil

关键词: Water Pollution;    Pollution Indicators;    Contamination;    Poluição da Água;    Indicadores de Contaminação;    Contaminação;   

DOI  :  10.1590/S0102-311X2002000600014

来源: SciELO

【 摘 要 】

Increasing attention is current focused on urban groundwater contamination with gasoline hydrocarbon compounds in Brazil. The compounds benzene, toluene, ethylbenzene, and xylenes (BTEX) contained in fuels are highly toxic and can have severe public health consequences, besides posing the risk of intake from the water table by way of contamination. After two years of a steady gasoline storage tank leak, water samples from private household wells in the district of Brisa Mar, Itaguaí, Rio de Janeiro State, were analyzed and the concentration of BTEX compounds was evaluated. Two out of ten water samples from the study area presented BTEX concentrations above the National Water Quality Standard (Brazilian Health Ministry Ruling No. 1469/2000), in which the maximum permissible benzene concentration is 5µg.L-1. Four others wells were also contaminated with nitrate, responsible for the induction of methemoglobinemia. Natural attenuation (intrinsic biodegradation) mechanisms through electron acceptors was also investigated in this study.

【 授权许可】

CC BY   
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