Avaliação da qualidade de sedimentos - estudo de caso: sub-bacia do Ribeirão Espírito Santo, afluente do Rio São Francisco

Química Nova

Vanessa Kelly Saraiva²  Marcos Roberto Lopes Do Nascimento¹  Helena Eugênia Leonhardt Palmieri¹  Vanusa Maria Feliciano Jacomino¹ 

[1] ,Instituto Mineiro de Gestão das ÁguasBelo Horizonte MG ,Brasil

关键词: sediments;    acid volatile sulfite;    benthos;   

DOI  :  10.1590/S0100-40422009000800003

来源: SciELO

【 摘 要 】

This study evaluated the environmental impact resulting from surface water and sediment contamination by metals in a watershed affected by a tailing basin that controls effluents coming from a zinc-ore beneficiation plant. The studies combined assessments of sediment chemistry (exceedances of sediment quality guidelines), benthic assemblage structure and acute and chronic ecotoxicity. The results showed that the levels of metal contamination in sediments are not yet enough to cause deleterious effects to the biota. However, the ecotoxicity tests indicated the occurrence of chronic effects, demonstrating that other factors, as the use of fertilizers, could also be a source of contamination.

【 授权许可】

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