Trace metal contamination in mangrove sediments, Guanabara Bay, Rio de Janeiro, Brazil
Main Author: | |
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Publication Date: | 2007 |
Other Authors: | , , , |
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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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 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532007000600014 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532007000600014 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0103-50532007000600014 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
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) instacron:SBQ |
instname_str |
Sociedade Brasileira de Química (SBQ) |
instacron_str |
SBQ |
institution |
SBQ |
reponame_str |
Journal of the Brazilian Chemical Society (Online) |
collection |
Journal of the Brazilian Chemical Society (Online) |
repository.name.fl_str_mv |
Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ) |
repository.mail.fl_str_mv |
||office@jbcs.sbq.org.br |
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1750318168229806080 |