Geochemical behavior of heavy metals in differents environments in Rodrigo de Freitas lagoon - RJ/Brazil
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Anais da Academia Brasileira de Ciências (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652011000200008 |
Resumo: | 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 Freitas lagoon. Despite the different levels of oxidation between the sediments accumulated in the streets and in the bottom of the lagoon, the geochemical partitioning of the heavy metals did not show any pattern of variation for the metals, except for the element Cu. No concentrations were found in the soluble phase of samples collected in the surfacial sediments of the lagoon, suggesting no bioavailability of heavy metals |
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Anais da Academia Brasileira de Ciências (Online) |
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Geochemical behavior of heavy metals in differents environments in Rodrigo de Freitas lagoon - RJ/Brazilheavy metalsRodrigo de Freitas lagoonsedimentsThe 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 Freitas lagoon. Despite the different levels of oxidation between the sediments accumulated in the streets and in the bottom of the lagoon, the geochemical partitioning of the heavy metals did not show any pattern of variation for the metals, except for the element Cu. No concentrations were found in the soluble phase of samples collected in the surfacial sediments of the lagoon, suggesting no bioavailability of heavy metalsAcademia Brasileira de Ciências2011-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652011000200008Anais da Academia Brasileira de Ciências v.83 n.2 2011reponame:Anais da Academia Brasileira de Ciências (Online)instname:Academia Brasileira de Ciências (ABC)instacron:ABC10.1590/S0001-37652011000200008info:eu-repo/semantics/openAccessFonseca,Estefan MBaptista Neto,José AFernandez,Marcos AMcalister,JohnSmith,Bernardeng2011-06-03T00:00:00Zoai:scielo:S0001-37652011000200008Revistahttp://www.scielo.br/aabchttps://old.scielo.br/oai/scielo-oai.php||aabc@abc.org.br1678-26900001-3765opendoar:2011-06-03T00:00Anais da Academia Brasileira de Ciências (Online) - Academia Brasileira de Ciências (ABC)false |
dc.title.none.fl_str_mv |
Geochemical behavior of heavy metals in differents environments in Rodrigo de Freitas lagoon - RJ/Brazil |
title |
Geochemical behavior of heavy metals in differents environments in Rodrigo de Freitas lagoon - RJ/Brazil |
spellingShingle |
Geochemical behavior of heavy metals in differents environments in Rodrigo de Freitas lagoon - RJ/Brazil Fonseca,Estefan M heavy metals Rodrigo de Freitas lagoon sediments |
title_short |
Geochemical behavior of heavy metals in differents environments in Rodrigo de Freitas lagoon - RJ/Brazil |
title_full |
Geochemical behavior of heavy metals in differents environments in Rodrigo de Freitas lagoon - RJ/Brazil |
title_fullStr |
Geochemical behavior of heavy metals in differents environments in Rodrigo de Freitas lagoon - RJ/Brazil |
title_full_unstemmed |
Geochemical behavior of heavy metals in differents environments in Rodrigo de Freitas lagoon - RJ/Brazil |
title_sort |
Geochemical behavior of heavy metals in differents environments in Rodrigo de Freitas lagoon - RJ/Brazil |
author |
Fonseca,Estefan M |
author_facet |
Fonseca,Estefan M Baptista Neto,José A Fernandez,Marcos A Mcalister,John Smith,Bernard |
author_role |
author |
author2 |
Baptista Neto,José A Fernandez,Marcos A Mcalister,John Smith,Bernard |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Fonseca,Estefan M Baptista Neto,José A Fernandez,Marcos A Mcalister,John Smith,Bernard |
dc.subject.por.fl_str_mv |
heavy metals Rodrigo de Freitas lagoon sediments |
topic |
heavy metals Rodrigo de Freitas lagoon sediments |
description |
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 Freitas lagoon. Despite the different levels of oxidation between the sediments accumulated in the streets and in the bottom of the lagoon, the geochemical partitioning of the heavy metals did not show any pattern of variation for the metals, except for the element Cu. No concentrations were found in the soluble phase of samples collected in the surfacial sediments of the lagoon, suggesting no bioavailability of heavy metals |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-06-01 |
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=S0001-37652011000200008 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652011000200008 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0001-37652011000200008 |
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 |
Academia Brasileira de Ciências |
publisher.none.fl_str_mv |
Academia Brasileira de Ciências |
dc.source.none.fl_str_mv |
Anais da Academia Brasileira de Ciências v.83 n.2 2011 reponame:Anais da Academia Brasileira de Ciências (Online) instname:Academia Brasileira de Ciências (ABC) instacron:ABC |
instname_str |
Academia Brasileira de Ciências (ABC) |
instacron_str |
ABC |
institution |
ABC |
reponame_str |
Anais da Academia Brasileira de Ciências (Online) |
collection |
Anais da Academia Brasileira de Ciências (Online) |
repository.name.fl_str_mv |
Anais da Academia Brasileira de Ciências (Online) - Academia Brasileira de Ciências (ABC) |
repository.mail.fl_str_mv |
||aabc@abc.org.br |
_version_ |
1754302857982509056 |