Especiação redox de cromo em solo acidentalmente contaminado com solução sulfocrômica

Detalhes bibliográficos
Autor(a) principal: Matos,Wladiana Oliveira
Data de Publicação: 2008
Outros Autores: Nóbrega,Joaquim de Araújo, Souza,Gilberto Batista de, Nogueira,Ana Rita Araujo
Tipo de documento: Artigo
Idioma: por
Título da fonte: Química Nova (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422008000600032
Resumo: Determination of Cr(VI) and Cr(III) was studied in soil samples accidentally contaminated with sulphochromic solution. Molecular absorption spectrophotometry based on the diphenylcarbazide method was used for the determination of Cr(VI) after its alkaline extraction. The total chromium concentration was determined using ICP OES. The quantification of Cr(III) was accomplished by subtracting the Cr(VI) concentration from the total chromium concentration. Regardless of the known contamination of the soil samples by sulphochromic solution, concentrations of Cr(VI) were below the detection limit. Addition and recovery experiments for Cr(VI) in soil samples with and without organic matter indicated its influence on the reduction of Cr(VI) to Cr(III).
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spelling Especiação redox de cromo em solo acidentalmente contaminado com solução sulfocrômicachromiumredox speciationsoilDetermination of Cr(VI) and Cr(III) was studied in soil samples accidentally contaminated with sulphochromic solution. Molecular absorption spectrophotometry based on the diphenylcarbazide method was used for the determination of Cr(VI) after its alkaline extraction. The total chromium concentration was determined using ICP OES. The quantification of Cr(III) was accomplished by subtracting the Cr(VI) concentration from the total chromium concentration. Regardless of the known contamination of the soil samples by sulphochromic solution, concentrations of Cr(VI) were below the detection limit. Addition and recovery experiments for Cr(VI) in soil samples with and without organic matter indicated its influence on the reduction of Cr(VI) to Cr(III).Sociedade Brasileira de Química2008-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422008000600032Química Nova v.31 n.6 2008reponame:Química Nova (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0100-40422008000600032info:eu-repo/semantics/openAccessMatos,Wladiana OliveiraNóbrega,Joaquim de AraújoSouza,Gilberto Batista deNogueira,Ana Rita Araujopor2008-10-10T00:00:00Zoai:scielo:S0100-40422008000600032Revistahttps://www.scielo.br/j/qn/ONGhttps://old.scielo.br/oai/scielo-oai.phpquimicanova@sbq.org.br1678-70640100-4042opendoar:2008-10-10T00:00Química Nova (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Especiação redox de cromo em solo acidentalmente contaminado com solução sulfocrômica
title Especiação redox de cromo em solo acidentalmente contaminado com solução sulfocrômica
spellingShingle Especiação redox de cromo em solo acidentalmente contaminado com solução sulfocrômica
Matos,Wladiana Oliveira
chromium
redox speciation
soil
title_short Especiação redox de cromo em solo acidentalmente contaminado com solução sulfocrômica
title_full Especiação redox de cromo em solo acidentalmente contaminado com solução sulfocrômica
title_fullStr Especiação redox de cromo em solo acidentalmente contaminado com solução sulfocrômica
title_full_unstemmed Especiação redox de cromo em solo acidentalmente contaminado com solução sulfocrômica
title_sort Especiação redox de cromo em solo acidentalmente contaminado com solução sulfocrômica
author Matos,Wladiana Oliveira
author_facet Matos,Wladiana Oliveira
Nóbrega,Joaquim de Araújo
Souza,Gilberto Batista de
Nogueira,Ana Rita Araujo
author_role author
author2 Nóbrega,Joaquim de Araújo
Souza,Gilberto Batista de
Nogueira,Ana Rita Araujo
author2_role author
author
author
dc.contributor.author.fl_str_mv Matos,Wladiana Oliveira
Nóbrega,Joaquim de Araújo
Souza,Gilberto Batista de
Nogueira,Ana Rita Araujo
dc.subject.por.fl_str_mv chromium
redox speciation
soil
topic chromium
redox speciation
soil
description Determination of Cr(VI) and Cr(III) was studied in soil samples accidentally contaminated with sulphochromic solution. Molecular absorption spectrophotometry based on the diphenylcarbazide method was used for the determination of Cr(VI) after its alkaline extraction. The total chromium concentration was determined using ICP OES. The quantification of Cr(III) was accomplished by subtracting the Cr(VI) concentration from the total chromium concentration. Regardless of the known contamination of the soil samples by sulphochromic solution, concentrations of Cr(VI) were below the detection limit. Addition and recovery experiments for Cr(VI) in soil samples with and without organic matter indicated its influence on the reduction of Cr(VI) to Cr(III).
publishDate 2008
dc.date.none.fl_str_mv 2008-01-01
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=S0100-40422008000600032
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422008000600032
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv 10.1590/S0100-40422008000600032
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 Química Nova v.31 n.6 2008
reponame:Química Nova (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Química Nova (Online)
collection Química Nova (Online)
repository.name.fl_str_mv Química Nova (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv quimicanova@sbq.org.br
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