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	Provedor de dados 42 (2) Autor BAPTISTA NETO,JOSÉ A. (2) FONSECA,ESTEFAN M. DA (2) BALIEIRO,FABIANO C. (1) FERNANDEZ,MARCOS A. (1) GROTTO,BEATRIZ W. (1) MCALISTER,JOHN (1) SILVA,CARLOS A. RAMOS E (1) SMITH,BERNARD (1) SOUZA,FLAVO E.S. DE (1) Mais... Palavra-chave Brazil (1) Heavy metals (1) Humic acids (1) Hyper-saline waters (1) Positive estuaries (1) Rio de Janeiro (1) Rodrigo de Freitas lagoon (1) Surface sediment (1) Weakly bounded heavy metal (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2017 (1) 2013 (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 42 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 Potentially mobile of heavy metals on the surface sediments in tropical hyper-saline and positive estuaries 42 SILVA,CARLOS A. RAMOS E; FONSECA,ESTEFAN M. DA; GROTTO,BEATRIZ W.; SOUZA,FLAVO E.S. DE; BAPTISTA NETO,JOSÉ A.. ABSTRACT Estuarine sediments represent important pools of trace metals, released from both anthropogenic and natural sources. Fluctuations in the water column physicochemical conditions, on the other hand, may transfer metals from solid to liquid compartment and resulting in contamination of the surrounding environment. The present research was carried out to evaluate the weakly bounded heavy metal levels in tropical hyper-saline and positive estuaries, in order to quantify its potentially availability. The monitoring includes five metals (Cd, Cr, Cu, Pb, Zn) and cover nine estuaries in Rio Grande do Norte state/Brazil, including four hypersaline and five true estuaries. 50 surface sediment samples were collected in each estuary. At the same time, organic... Tipo: Info:eu-repo/semantics/article Palavras-chave: Weakly bounded heavy metal; Hyper-saline waters; Positive estuaries; Surface sediment. Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602597 Registros recuperados: 2 Primeira ... 1 ... Última

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