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


Autoria(s): Saraiva,Vanessa Kelly; Nascimento,Marcos Roberto Lopes do; Palmieri,Helena Eugênia Leonhardt; Jacomino,Vanusa Maria Feliciano
Data(s)

01/01/2009

Resumo

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.

Formato

text/html

Identificador

http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422009000800003

Idioma(s)

pt

Publicador

Sociedade Brasileira de Química

Fonte

Química Nova v.32 n.8 2009

Palavras-Chave #sediments #acid volatile sulfite #benthos
Tipo

journal article