Clique para ampliar...

Revista Brasileira de Recursos Hídricos
Brazilian Journal of Water Resources

ISSN 2318-0331

VOLUME. 19 - Nº. 4 - OUT/DEZ - 2014
Toxicity bioassays with freshwater and wastewater applied to environmental forensic investigation
Environmental forensic investigation is an area that still lacks adequate methodologies for the effective fulfillment of its purpose. This study evaluated the application of ecotoxicity bioassays in environmental forensic investigation related to water pollution . Samples were collected from streams in a municipality located in the south central region of the state of Minas Gerais, Brazil, receiving tannery effluents suspected of causing water pollution. This study included acute and chronic toxicity bioassays in water and tannery effluent samples, using microcrustaceans as bioindicators, as well as dosage of chromium, cadmium and lead in samples. Toxic effects on survival and reproduction of organisms were detected, which were related to high concentrations of
chromium in the samples, reaching up to 3955.0 mg.Kg-1. The ecotoxicological assessment showed a high potential for application in Environmental Forensic Investigation, as it provided robust evidence of the impact of the assessed activities on bioindicators of aquatic fauna. 
Palavras-chave: Environmental forensics. Tannery wastewater. Chromium. Ecotoxicological assessment of freshwater and wastewater 



73 visualizações   36 downloads     Contabilizado a partir de 10/08/2014


ABRHidro - Associação Brasileira de Recursos Hídricos