Trace metal contamination in mangrove sediments, Guanabara Bay, Rio de Janeiro, Brazil

Bibliographic Details
Main Author: Farias,Cassia O.
Publication Date: 2007
Other Authors: Hamacher,Claudia, Wagener,Angela de Luca R., Campos,Reinaldo C. de, Godoy,José M.
Format: Article
Language: eng
Source: Journal of the Brazilian Chemical Society (Online)
Download full: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532007000600014
Summary: The Guanabara Bay in Rio de Janeiro has undergone profound alterations of its natural environmental conditions. Metal concentration increase in sediments has been reported to be among these alterations. Trace-metal contamination and availability were studied in sediments of 3 mangrove areas of the bay. Cd, Zn, Pb, Ni, Cu and Al concentrations were determined in segments of sediment cores, after treatment with 1 mol L-1 HCl and with concentrated HNO3. Fe and Mn were determined in the leach with HNO3. Concentrations were low in comparison to those reported for Guanabara Bay and Cd showed up to 90% recovery in the HCl extract. Sediments found to be oxic to suboxic showed AVS concentrations in range of 0.07 (bottom) to 18.79 mmol g-1(sub-surface) indicating heterogeneity and apparent disequilibrium. Fe and Mn oxides, carbonates and organic matter may be the most important phases controlling metal availability and distribution.
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spelling Trace metal contamination in mangrove sediments, Guanabara Bay, Rio de Janeiro, Braziltrace metalsmetal availabilitymangrovesedimentsThe Guanabara Bay in Rio de Janeiro has undergone profound alterations of its natural environmental conditions. Metal concentration increase in sediments has been reported to be among these alterations. Trace-metal contamination and availability were studied in sediments of 3 mangrove areas of the bay. Cd, Zn, Pb, Ni, Cu and Al concentrations were determined in segments of sediment cores, after treatment with 1 mol L-1 HCl and with concentrated HNO3. Fe and Mn were determined in the leach with HNO3. Concentrations were low in comparison to those reported for Guanabara Bay and Cd showed up to 90% recovery in the HCl extract. Sediments found to be oxic to suboxic showed AVS concentrations in range of 0.07 (bottom) to 18.79 mmol g-1(sub-surface) indicating heterogeneity and apparent disequilibrium. Fe and Mn oxides, carbonates and organic matter may be the most important phases controlling metal availability and distribution.Sociedade Brasileira de Química2007-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532007000600014Journal of the Brazilian Chemical Society v.18 n.6 2007reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0103-50532007000600014info:eu-repo/semantics/openAccessFarias,Cassia O.Hamacher,ClaudiaWagener,Angela de Luca R.Campos,Reinaldo C. deGodoy,José M.eng2007-12-10T00:00:00Zoai:scielo:S0103-50532007000600014Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2007-12-10T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Trace metal contamination in mangrove sediments, Guanabara Bay, Rio de Janeiro, Brazil
title Trace metal contamination in mangrove sediments, Guanabara Bay, Rio de Janeiro, Brazil
spellingShingle Trace metal contamination in mangrove sediments, Guanabara Bay, Rio de Janeiro, Brazil
Farias,Cassia O.
trace metals
metal availability
mangrove
sediments
title_short Trace metal contamination in mangrove sediments, Guanabara Bay, Rio de Janeiro, Brazil
title_full Trace metal contamination in mangrove sediments, Guanabara Bay, Rio de Janeiro, Brazil
title_fullStr Trace metal contamination in mangrove sediments, Guanabara Bay, Rio de Janeiro, Brazil
title_full_unstemmed Trace metal contamination in mangrove sediments, Guanabara Bay, Rio de Janeiro, Brazil
title_sort Trace metal contamination in mangrove sediments, Guanabara Bay, Rio de Janeiro, Brazil
author Farias,Cassia O.
author_facet Farias,Cassia O.
Hamacher,Claudia
Wagener,Angela de Luca R.
Campos,Reinaldo C. de
Godoy,José M.
author_role author
author2 Hamacher,Claudia
Wagener,Angela de Luca R.
Campos,Reinaldo C. de
Godoy,José M.
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Farias,Cassia O.
Hamacher,Claudia
Wagener,Angela de Luca R.
Campos,Reinaldo C. de
Godoy,José M.
dc.subject.por.fl_str_mv trace metals
metal availability
mangrove
sediments
topic trace metals
metal availability
mangrove
sediments
description The Guanabara Bay in Rio de Janeiro has undergone profound alterations of its natural environmental conditions. Metal concentration increase in sediments has been reported to be among these alterations. Trace-metal contamination and availability were studied in sediments of 3 mangrove areas of the bay. Cd, Zn, Pb, Ni, Cu and Al concentrations were determined in segments of sediment cores, after treatment with 1 mol L-1 HCl and with concentrated HNO3. Fe and Mn were determined in the leach with HNO3. Concentrations were low in comparison to those reported for Guanabara Bay and Cd showed up to 90% recovery in the HCl extract. Sediments found to be oxic to suboxic showed AVS concentrations in range of 0.07 (bottom) to 18.79 mmol g-1(sub-surface) indicating heterogeneity and apparent disequilibrium. Fe and Mn oxides, carbonates and organic matter may be the most important phases controlling metal availability and distribution.
publishDate 2007
dc.date.none.fl_str_mv 2007-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532007000600014
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dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-50532007000600014
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dc.publisher.none.fl_str_mv Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Journal of the Brazilian Chemical Society v.18 n.6 2007
reponame:Journal of the Brazilian Chemical Society (Online)
instname:Sociedade Brasileira de Química (SBQ)
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