Mercury speciation changes in waters of the sepetiba Bay, SE Brazil during tidal events and different seasons
Autor(a) principal: | |
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Data de Publicação: | 2007 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Journal of the Brazilian Chemical Society (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532007000600023 |
Resumo: | This work describes changes in Hg speciation in water along the transport from Sepetiba Bay, SE Brazil, to the adjacent continental platform during tide events and in different seasons. The chemical evaluation of Sepetiba Bay waters showed that the bay exports suspended particulate material (SPM) impoverish in organic carbon to adjacent continental platform areas, mainly during the wet season and imports SPM enriched in organic carbon from the ocean, probably of phytoplanktonic origin, during the dry season. The chemical speciation of Hg during the study period showed that Hg0 production can be controlled by primary productivity and that the bay acts as a producer and exporter of organic species of Hg to adjacent areas, since the highest non-reactive Hg concentrations were observed during the ebb tide. No significant correlations were found between non-reactive Hg and dissolved or particulate organic matter concentrations. In general the particulate Hg, non-reactive Hg and reactive Hg fractions represents 55%, 35.5% and 9.5% of the total Hg content in Sepetiba Bay waters, respectively. |
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Mercury speciation changes in waters of the sepetiba Bay, SE Brazil during tidal events and different seasonsmercury speciationcoastal areaorganic carbonSepetiba BayThis work describes changes in Hg speciation in water along the transport from Sepetiba Bay, SE Brazil, to the adjacent continental platform during tide events and in different seasons. The chemical evaluation of Sepetiba Bay waters showed that the bay exports suspended particulate material (SPM) impoverish in organic carbon to adjacent continental platform areas, mainly during the wet season and imports SPM enriched in organic carbon from the ocean, probably of phytoplanktonic origin, during the dry season. The chemical speciation of Hg during the study period showed that Hg0 production can be controlled by primary productivity and that the bay acts as a producer and exporter of organic species of Hg to adjacent areas, since the highest non-reactive Hg concentrations were observed during the ebb tide. No significant correlations were found between non-reactive Hg and dissolved or particulate organic matter concentrations. In general the particulate Hg, non-reactive Hg and reactive Hg fractions represents 55%, 35.5% and 9.5% of the total Hg content in Sepetiba Bay waters, respectively.Sociedade Brasileira de Química2007-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532007000600023Journal 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/S0103-50532007000600023info:eu-repo/semantics/openAccessParaquetti,Heloisa H. M.Lacerda,Luiz D.Almeida,Marcelo D.Marins,Rozane V.Mounier,Stephaneeng2007-12-07T00:00:00Zoai:scielo:S0103-50532007000600023Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2007-12-07T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false |
dc.title.none.fl_str_mv |
Mercury speciation changes in waters of the sepetiba Bay, SE Brazil during tidal events and different seasons |
title |
Mercury speciation changes in waters of the sepetiba Bay, SE Brazil during tidal events and different seasons |
spellingShingle |
Mercury speciation changes in waters of the sepetiba Bay, SE Brazil during tidal events and different seasons Paraquetti,Heloisa H. M. mercury speciation coastal area organic carbon Sepetiba Bay |
title_short |
Mercury speciation changes in waters of the sepetiba Bay, SE Brazil during tidal events and different seasons |
title_full |
Mercury speciation changes in waters of the sepetiba Bay, SE Brazil during tidal events and different seasons |
title_fullStr |
Mercury speciation changes in waters of the sepetiba Bay, SE Brazil during tidal events and different seasons |
title_full_unstemmed |
Mercury speciation changes in waters of the sepetiba Bay, SE Brazil during tidal events and different seasons |
title_sort |
Mercury speciation changes in waters of the sepetiba Bay, SE Brazil during tidal events and different seasons |
author |
Paraquetti,Heloisa H. M. |
author_facet |
Paraquetti,Heloisa H. M. Lacerda,Luiz D. Almeida,Marcelo D. Marins,Rozane V. Mounier,Stephane |
author_role |
author |
author2 |
Lacerda,Luiz D. Almeida,Marcelo D. Marins,Rozane V. Mounier,Stephane |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Paraquetti,Heloisa H. M. Lacerda,Luiz D. Almeida,Marcelo D. Marins,Rozane V. Mounier,Stephane |
dc.subject.por.fl_str_mv |
mercury speciation coastal area organic carbon Sepetiba Bay |
topic |
mercury speciation coastal area organic carbon Sepetiba Bay |
description |
This work describes changes in Hg speciation in water along the transport from Sepetiba Bay, SE Brazil, to the adjacent continental platform during tide events and in different seasons. The chemical evaluation of Sepetiba Bay waters showed that the bay exports suspended particulate material (SPM) impoverish in organic carbon to adjacent continental platform areas, mainly during the wet season and imports SPM enriched in organic carbon from the ocean, probably of phytoplanktonic origin, during the dry season. The chemical speciation of Hg during the study period showed that Hg0 production can be controlled by primary productivity and that the bay acts as a producer and exporter of organic species of Hg to adjacent areas, since the highest non-reactive Hg concentrations were observed during the ebb tide. No significant correlations were found between non-reactive Hg and dissolved or particulate organic matter concentrations. In general the particulate Hg, non-reactive Hg and reactive Hg fractions represents 55%, 35.5% and 9.5% of the total Hg content in Sepetiba Bay waters, respectively. |
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=S0103-50532007000600023 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532007000600023 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0103-50532007000600023 |
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 |
_version_ |
1750318168242388992 |