The attenuation of concentrations model: a new method for assessing mercury mobility in sediments

Detalhes bibliográficos
Autor(a) principal: Wasserman, Julio Cesar de Faria Alvim
Data de Publicação: 2004
Outros Autores: Queiroz, Everaldo Lima de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/4845
Resumo: p. 17-21,Jan./Feb.
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spelling Wasserman, Julio Cesar de Faria AlvimQueiroz, Everaldo Lima deWasserman, Julio Cesar de Faria AlvimQueiroz, Everaldo Lima de2011-12-14T11:17:57Z2011-12-14T11:17:57Z20040100-4042http://www.repositorio.ufba.br/ri/handle/ri/4845v. 27, n. 1.p. 17-21,Jan./Feb.In this work we propose a new approach for the determination of the mobility of mercury in sediments based on spatial distribution of concentrations. We chose the Tainheiros Cove, located in the Todos os Santos Bay, Brazil, as the study area, for it has a history of mercury contamination due to a chloro-alkali plant that was active during 12 years. Twenty-six surface sediment samples were collected from the area and mercury concentrations were measured by cold vapour atomic absorption spectrophotometry. A contour map was constructed from the results, indicating that mercury accumulated in a "hot spot" where concentrations reach more than 1 µg g-1. The model is able to estimate mobility of mercury in the sediments based on the distances between iso-concentration contours that determines an attenuation of concentrations factor. Values of attenuation ranged between 0.0729 (East of the hot spot, indicating higher mobility) to 0.7727 (North of the hot spot, indicating lower mobility).Submitted by JURANDI DE SOUZA SILVA (jssufba@hotmail.com) on 2011-12-14T11:17:57Z No. of bitstreams: 1 18802.pdf: 464536 bytes, checksum: c7c04868e79b5308847d00073dc08a70 (MD5)Made available in DSpace on 2011-12-14T11:17:57Z (GMT). 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dc.title.pt_BR.fl_str_mv The attenuation of concentrations model: a new method for assessing mercury mobility in sediments
dc.title.alternative.pt_BR.fl_str_mv Química Nova
title The attenuation of concentrations model: a new method for assessing mercury mobility in sediments
spellingShingle The attenuation of concentrations model: a new method for assessing mercury mobility in sediments
Wasserman, Julio Cesar de Faria Alvim
Mercury
Mobility
Sediments
title_short The attenuation of concentrations model: a new method for assessing mercury mobility in sediments
title_full The attenuation of concentrations model: a new method for assessing mercury mobility in sediments
title_fullStr The attenuation of concentrations model: a new method for assessing mercury mobility in sediments
title_full_unstemmed The attenuation of concentrations model: a new method for assessing mercury mobility in sediments
title_sort The attenuation of concentrations model: a new method for assessing mercury mobility in sediments
author Wasserman, Julio Cesar de Faria Alvim
author_facet Wasserman, Julio Cesar de Faria Alvim
Queiroz, Everaldo Lima de
author_role author
author2 Queiroz, Everaldo Lima de
author2_role author
dc.contributor.author.fl_str_mv Wasserman, Julio Cesar de Faria Alvim
Queiroz, Everaldo Lima de
Wasserman, Julio Cesar de Faria Alvim
Queiroz, Everaldo Lima de
dc.subject.por.fl_str_mv Mercury
Mobility
Sediments
topic Mercury
Mobility
Sediments
description p. 17-21,Jan./Feb.
publishDate 2004
dc.date.issued.fl_str_mv 2004
dc.date.accessioned.fl_str_mv 2011-12-14T11:17:57Z
dc.date.available.fl_str_mv 2011-12-14T11:17:57Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.repositorio.ufba.br/ri/handle/ri/4845
dc.identifier.issn.none.fl_str_mv 0100-4042
dc.identifier.number.pt_BR.fl_str_mv v. 27, n. 1.
identifier_str_mv 0100-4042
v. 27, n. 1.
url http://www.repositorio.ufba.br/ri/handle/ri/4845
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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