Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados Anais da ABC (AABC) (2) Autor BALIEIRO,FABIANO C. (1) BAPTISTA NETO,JOSÉ A. (1) Baptista Neto,José A (1) FERNANDEZ,MARCOS A. (1) FONSECA,ESTEFAN M. DA (1) Fernandez,Marcos A (1) Fonseca,Estefan M (1) MCALISTER,JOHN (1) Mcalister,John (1) SMITH,BERNARD (1) Smith,Bernard (1) Mais... Palavra-chave Heavy metals (2) Rodrigo de Freitas lagoon (2) Brazil (1) Humic acids (1) Rio de Janeiro (1) Sediments (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2013 (1) 2011 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última The Role of the Humic Substances in the Fractioning of Heavy Metals in Rodrigo de Freitas Lagoon, Rio de Janeiro - Brazil Anais da ABC (AABC) FONSECA,ESTEFAN M. DA; BAPTISTA NETO,JOSÉ A.; MCALISTER,JOHN; SMITH,BERNARD; FERNANDEZ,MARCOS A.; BALIEIRO,FABIANO C.. One of the main results of the processes related to urbanization is the contamination of the adjacent water bodies. Inserted in this context, the Rodrigo de Freitas lagoon is situated in the south zone of the city of Rio de Janeiro. This ecosystem receives several inputs containing all sorts of pollutants, including heavy metals. The present work aimed to study the partitioning of heavy metals in the sediments of Rodrigo de Freitas and the influence of organic matter in this fractionation dynamic. The results of these analyses presented the contents of organic matter as an important metal-capturing agent. Fractionation of organic matter resulted in a predominance of humine. Heavy metal partitioning showed that the metals bound by the water-soluble phase... Tipo: Info:eu-repo/semantics/article Palavras-chave: Brazil; Rio de Janeiro; Rodrigo de Freitas lagoon; Heavy metals; Humic acids. Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401289 Geochemical behavior of heavy metals in differents environments in Rodrigo de Freitas lagoon - RJ/Brazil Anais da ABC (AABC) Fonseca,Estefan M; Baptista Neto,José A; Fernandez,Marcos A; Mcalister,John; Smith,Bernard. The accelerated urbanisation without a planning, brought several environmental problems to Rio de Janeiro coastal zone, especially in areas such as Rodrigo de Freitas lagoon, which receives a great amount of untreated sewage every day. To assess the nature, potentially sources and extent of heavy metal pollution in the lagoon, sediments from the surrounding streets, from the entrance of the main canal that drains to the lagoon and from the bottom of the lagoon were collected and analysed by a modified selective extraction procedure in order to study the geochemical partitioning and bioavailability of Zn, Cu, Cr, Ni and Pb in these three compartments. The present study verified an increase in the Cu, Pb and Zn concentrations in the north of the Rodrigo de... Tipo: Info:eu-repo/semantics/article Palavras-chave: Heavy metals; Rodrigo de Freitas lagoon; Sediments. Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652011000200008 Registros recuperados: 2 Primeira ... 1 ... Última

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Todos os direitos reservados, conforme Lei n° 9.610 Política de Privacidade Área restrita		Embrapa Parque Estação Biológica - PqEB s/n° Brasília, DF - Brasil - CEP 70770-901 Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco