Geochronology and heavy metal flux to Guanabara bay, Rio de Janeiro state: a preliminary study

Detalhes bibliográficos
Autor(a) principal: Baptista Neto,José A.
Data de Publicação: 2013
Outros Autores: Peixoto,Tomás C.S., Smith,Bernard J., Mcalister,John J., Patchineelam,Soraya M., Patchineelam,Sambasiva R., Fonseca,Estefan M.
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=S0001-37652013000401317
Resumo: Guanabara Bay, located in Rio de Janeiro state. It is surrounded by the second most important metropolitan area of the country. Over recent decades, land disturbance and urbanization in the surrounding area has significantly increased sediment input to the bay and had a negative effect on its overall environmental. This is especially related to high volumes of untreated sewage and industrial effluents. This study evaluates the history of this human impact through detailed examination of a sediment core taken from the northern portion of Guanabara Bay. A geochronology is established using 210Pb dating and related to organic carbon and heavy metal fluxes to the sediments. This gave a calculated net average sedimentation rate for the core of 0.67 cm.year-1. The organic carbon and heavy metals flux started to increase at the beginning of the last century and the highest values was observed in the top of the cores.
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spelling Geochronology and heavy metal flux to Guanabara bay, Rio de Janeiro state: a preliminary study210PbgeochronologyFlux of heavy metalGuanabara BayGuanabara Bay, located in Rio de Janeiro state. It is surrounded by the second most important metropolitan area of the country. Over recent decades, land disturbance and urbanization in the surrounding area has significantly increased sediment input to the bay and had a negative effect on its overall environmental. This is especially related to high volumes of untreated sewage and industrial effluents. This study evaluates the history of this human impact through detailed examination of a sediment core taken from the northern portion of Guanabara Bay. A geochronology is established using 210Pb dating and related to organic carbon and heavy metal fluxes to the sediments. This gave a calculated net average sedimentation rate for the core of 0.67 cm.year-1. The organic carbon and heavy metals flux started to increase at the beginning of the last century and the highest values was observed in the top of the cores.Academia Brasileira de Ciências2013-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401317Anais da Academia Brasileira de Ciências v.85 n.4 2013reponame:Anais da Academia Brasileira de Ciências (Online)instname:Academia Brasileira de Ciências (ABC)instacron:ABC10.1590/0001-3765201394612info:eu-repo/semantics/openAccessBaptista Neto,José A.Peixoto,Tomás C.S.Smith,Bernard J.Mcalister,John J.Patchineelam,Soraya M.Patchineelam,Sambasiva R.Fonseca,Estefan M.eng2015-11-03T00:00:00Zoai:scielo:S0001-37652013000401317Revistahttp://www.scielo.br/aabchttps://old.scielo.br/oai/scielo-oai.php||aabc@abc.org.br1678-26900001-3765opendoar:2015-11-03T00:00Anais da Academia Brasileira de Ciências (Online) - Academia Brasileira de Ciências (ABC)false
dc.title.none.fl_str_mv Geochronology and heavy metal flux to Guanabara bay, Rio de Janeiro state: a preliminary study
title Geochronology and heavy metal flux to Guanabara bay, Rio de Janeiro state: a preliminary study
spellingShingle Geochronology and heavy metal flux to Guanabara bay, Rio de Janeiro state: a preliminary study
Baptista Neto,José A.
210Pb
geochronology
Flux of heavy metal
Guanabara Bay
title_short Geochronology and heavy metal flux to Guanabara bay, Rio de Janeiro state: a preliminary study
title_full Geochronology and heavy metal flux to Guanabara bay, Rio de Janeiro state: a preliminary study
title_fullStr Geochronology and heavy metal flux to Guanabara bay, Rio de Janeiro state: a preliminary study
title_full_unstemmed Geochronology and heavy metal flux to Guanabara bay, Rio de Janeiro state: a preliminary study
title_sort Geochronology and heavy metal flux to Guanabara bay, Rio de Janeiro state: a preliminary study
author Baptista Neto,José A.
author_facet Baptista Neto,José A.
Peixoto,Tomás C.S.
Smith,Bernard J.
Mcalister,John J.
Patchineelam,Soraya M.
Patchineelam,Sambasiva R.
Fonseca,Estefan M.
author_role author
author2 Peixoto,Tomás C.S.
Smith,Bernard J.
Mcalister,John J.
Patchineelam,Soraya M.
Patchineelam,Sambasiva R.
Fonseca,Estefan M.
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Baptista Neto,José A.
Peixoto,Tomás C.S.
Smith,Bernard J.
Mcalister,John J.
Patchineelam,Soraya M.
Patchineelam,Sambasiva R.
Fonseca,Estefan M.
dc.subject.por.fl_str_mv 210Pb
geochronology
Flux of heavy metal
Guanabara Bay
topic 210Pb
geochronology
Flux of heavy metal
Guanabara Bay
description Guanabara Bay, located in Rio de Janeiro state. It is surrounded by the second most important metropolitan area of the country. Over recent decades, land disturbance and urbanization in the surrounding area has significantly increased sediment input to the bay and had a negative effect on its overall environmental. This is especially related to high volumes of untreated sewage and industrial effluents. This study evaluates the history of this human impact through detailed examination of a sediment core taken from the northern portion of Guanabara Bay. A geochronology is established using 210Pb dating and related to organic carbon and heavy metal fluxes to the sediments. This gave a calculated net average sedimentation rate for the core of 0.67 cm.year-1. The organic carbon and heavy metals flux started to increase at the beginning of the last century and the highest values was observed in the top of the cores.
publishDate 2013
dc.date.none.fl_str_mv 2013-01-01
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dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401317
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dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0001-3765201394612
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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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.85 n.4 2013
reponame:Anais da Academia Brasileira de Ciências (Online)
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reponame_str Anais da Academia Brasileira de Ciências (Online)
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repository.name.fl_str_mv Anais da Academia Brasileira de Ciências (Online) - Academia Brasileira de Ciências (ABC)
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