Interaction of arsenic species with tropical river aquatic humic substances enriched with aluminum and iron
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , |
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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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 |
|
_version_ |
1808129284811784192 |