Genotoxicity and mutagenicity of water samples from the Monjolinho River (Brazil) after receiving untreated effluents
Nenhuma Miniatura disponível
Data
2011-05-01
Orientador
Coorientador
Pós-graduação
Curso de graduação
Título da Revista
ISSN da Revista
Título de Volume
Editor
Academic Press Inc. Elsevier B.V.
Tipo
Artigo
Direito de acesso
Acesso restrito
Resumo
Cytotoxicity, genotoxicity and mutagenicity assays, using the Allium cepa test-system, were carried out in order to evaluate the effects of domestic and industrial effluents in the Monjolinho River in different seasons of the year. In the summer and intermediate seasons, chromosome aberration, micronuclei, cell death and inhibition of the mitotic index were observed in water samples collected at different sites. In the winter, either chromosome or cellular alterations were not observed. Through chemical analysis, we infer that the excessive metals such as Pb, Ni and Cu were mainly responsible for the effects observed in A. cepa cells. Limnologic analysis like electrical conductivity, dissolved oxygen and the presence of nitrogen and phosphated compounds showed that the river's contamination is due to organic matter discharge along its course. Moreover we note that this river had a higher self-depurative capacity at the end of its course, before its confluence with the Jacare-Guacu River. (C) 2010 Elsevier B.V. All rights reserved.
Descrição
Palavras-chave
Idioma
Inglês
Como citar
Ecotoxicology and Environmental Safety. San Diego: Academic Press Inc. Elsevier B.V., v. 74, n. 4, p. 826-833, 2011.
