Interaction of arsenic species with tropical river aquatic humic substances enriched with aluminum and iron

Detalhes bibliográficos
Autor(a) principal: de Oliveira, Lilian Karla [UNESP]
Data de Publicação: 2016
Outros Autores: Melo, Camila de Almeida [UNESP], Fraceto, Leonardo Fernandes [UNESP], Friese, Kurt, Rosa, André Henrique [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1007/s11356-015-5816-5
http://hdl.handle.net/11449/172238
Resumo: The mobility and bioavailability of arsenic (As) are strongly controlled by adsorption/precipitation processes involving metal oxides. However, the organic matter present in the environment, in combination with these oxides, can also play an important role in the cycle of arsenic. This work concerns the interaction between As and two samples of aquatic humic substances (AHS) from tropical rivers. The AHS were extracted as proposed by IHSS, and were characterized by 13C NMR. The experiments were conducted with the AHS in natura and enriched with metal cations, with different concentrations of As, and complexation capacity was evaluated at three different pH levels (5.0, 7.0, and 9.0). The AHS samples showed similar chemical compositions. The results suggested that there was no interaction between As(III) and AHS in natura or enriched with Al. Low concentrations of As(V) were bound to AHS in natura. For As(III), the complexation capacity of the AHS enriched with Fe was approximately 48 μmol per g of C, while the values for As(V) were in the range 69–80 μmol per grams of C. Fluorescence spectra showed that changes in Eh affected the complexation reactions of As(V) species with AHS.
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spelling Interaction of arsenic species with tropical river aquatic humic substances enriched with aluminum and ironAluminumAquatic humic substancesArsenicComplexationIronThe mobility and bioavailability of arsenic (As) are strongly controlled by adsorption/precipitation processes involving metal oxides. However, the organic matter present in the environment, in combination with these oxides, can also play an important role in the cycle of arsenic. This work concerns the interaction between As and two samples of aquatic humic substances (AHS) from tropical rivers. The AHS were extracted as proposed by IHSS, and were characterized by 13C NMR. The experiments were conducted with the AHS in natura and enriched with metal cations, with different concentrations of As, and complexation capacity was evaluated at three different pH levels (5.0, 7.0, and 9.0). The AHS samples showed similar chemical compositions. The results suggested that there was no interaction between As(III) and AHS in natura or enriched with Al. Low concentrations of As(V) were bound to AHS in natura. For As(III), the complexation capacity of the AHS enriched with Fe was approximately 48 μmol per g of C, while the values for As(V) were in the range 69–80 μmol per grams of C. Fluorescence spectra showed that changes in Eh affected the complexation reactions of As(V) species with AHS.Department of Analytical Chemistry Institute of Chemistry UNESP, Rua Prof. Francisco Degni, 55Department of Environmental Engineering UNESP, Av. Três de Março, 511UFZ-Helmholtz Centre for Environmental Research, Bruckstrasse 3aDepartment of Analytical Chemistry Institute of Chemistry UNESP, Rua Prof. Francisco Degni, 55Department of Environmental Engineering UNESP, Av. Três de Março, 511Universidade Estadual Paulista (Unesp)UFZ-Helmholtz Centre for Environmental Researchde Oliveira, Lilian Karla [UNESP]Melo, Camila de Almeida [UNESP]Fraceto, Leonardo Fernandes [UNESP]Friese, KurtRosa, André Henrique [UNESP]2018-12-11T16:59:19Z2018-12-11T16:59:19Z2016-04-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article6205-6216application/pdfhttp://dx.doi.org/10.1007/s11356-015-5816-5Environmental Science and Pollution Research, v. 23, n. 7, p. 6205-6216, 2016.1614-74990944-1344http://hdl.handle.net/11449/17223810.1007/s11356-015-5816-52-s2.0-849481811952-s2.0-84948181195.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengEnvironmental Science and Pollution Research0,858info:eu-repo/semantics/openAccess2023-12-23T06:20:10Zoai:repositorio.unesp.br:11449/172238Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:06:35.345976Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Interaction of arsenic species with tropical river aquatic humic substances enriched with aluminum and iron
title Interaction of arsenic species with tropical river aquatic humic substances enriched with aluminum and iron
spellingShingle Interaction of arsenic species with tropical river aquatic humic substances enriched with aluminum and iron
de Oliveira, Lilian Karla [UNESP]
Aluminum
Aquatic humic substances
Arsenic
Complexation
Iron
title_short Interaction of arsenic species with tropical river aquatic humic substances enriched with aluminum and iron
title_full Interaction of arsenic species with tropical river aquatic humic substances enriched with aluminum and iron
title_fullStr Interaction of arsenic species with tropical river aquatic humic substances enriched with aluminum and iron
title_full_unstemmed Interaction of arsenic species with tropical river aquatic humic substances enriched with aluminum and iron
title_sort Interaction of arsenic species with tropical river aquatic humic substances enriched with aluminum and iron
author de Oliveira, Lilian Karla [UNESP]
author_facet de Oliveira, Lilian Karla [UNESP]
Melo, Camila de Almeida [UNESP]
Fraceto, Leonardo Fernandes [UNESP]
Friese, Kurt
Rosa, André Henrique [UNESP]
author_role author
author2 Melo, Camila de Almeida [UNESP]
Fraceto, Leonardo Fernandes [UNESP]
Friese, Kurt
Rosa, André Henrique [UNESP]
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
UFZ-Helmholtz Centre for Environmental Research
dc.contributor.author.fl_str_mv de Oliveira, Lilian Karla [UNESP]
Melo, Camila de Almeida [UNESP]
Fraceto, Leonardo Fernandes [UNESP]
Friese, Kurt
Rosa, André Henrique [UNESP]
dc.subject.por.fl_str_mv Aluminum
Aquatic humic substances
Arsenic
Complexation
Iron
topic Aluminum
Aquatic humic substances
Arsenic
Complexation
Iron
description The mobility and bioavailability of arsenic (As) are strongly controlled by adsorption/precipitation processes involving metal oxides. However, the organic matter present in the environment, in combination with these oxides, can also play an important role in the cycle of arsenic. This work concerns the interaction between As and two samples of aquatic humic substances (AHS) from tropical rivers. The AHS were extracted as proposed by IHSS, and were characterized by 13C NMR. The experiments were conducted with the AHS in natura and enriched with metal cations, with different concentrations of As, and complexation capacity was evaluated at three different pH levels (5.0, 7.0, and 9.0). The AHS samples showed similar chemical compositions. The results suggested that there was no interaction between As(III) and AHS in natura or enriched with Al. Low concentrations of As(V) were bound to AHS in natura. For As(III), the complexation capacity of the AHS enriched with Fe was approximately 48 μmol per g of C, while the values for As(V) were in the range 69–80 μmol per grams of C. Fluorescence spectra showed that changes in Eh affected the complexation reactions of As(V) species with AHS.
publishDate 2016
dc.date.none.fl_str_mv 2016-04-01
2018-12-11T16:59:19Z
2018-12-11T16:59:19Z
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://dx.doi.org/10.1007/s11356-015-5816-5
Environmental Science and Pollution Research, v. 23, n. 7, p. 6205-6216, 2016.
1614-7499
0944-1344
http://hdl.handle.net/11449/172238
10.1007/s11356-015-5816-5
2-s2.0-84948181195
2-s2.0-84948181195.pdf
url http://dx.doi.org/10.1007/s11356-015-5816-5
http://hdl.handle.net/11449/172238
identifier_str_mv Environmental Science and Pollution Research, v. 23, n. 7, p. 6205-6216, 2016.
1614-7499
0944-1344
10.1007/s11356-015-5816-5
2-s2.0-84948181195
2-s2.0-84948181195.pdf
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Environmental Science and Pollution Research
0,858
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 6205-6216
application/pdf
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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