Metal-organic framework-modified carbon paste electrode for determining lead in aqueous solutions
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.20964/2020.10.42 http://hdl.handle.net/11449/205260 |
Resumo: | In this work, a novel carbon paste electrode was modified with metal-organic framework (MOF) 235 for detecting lead ions in aqueous solutions using anodic redissolution voltammetry as analytical technique. Experimental parameters such as, amount of MOF-235, type of supporting electrolyte, potential and time deposition were evaluated to optimize the detection approach. The Pb2+ detection response of this MOF-modified electrode allowed to achieve a detection limit of about 18 μg L-1 with a correlation coefficient (R) of about 0.9962, extending in a linear concentration range from 50 to 300 μg L-1. Drinking water samples (as-received or spiked with well-known lead concentration) were analyzed to determine the concentration of lead ions. Data were also confirmed by Atomic Absorption Spectroscopy (AAS). Furthermore, the electrochemical determination when compared with the AAS, has shown that the electroanalytical approach represents a fast and quite reliable alternative for monitoring heavy metals. |
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Repositório Institucional da UNESP |
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Metal-organic framework-modified carbon paste electrode for determining lead in aqueous solutionscarbon paste electrodeleadmodified electrodeMOF-235In this work, a novel carbon paste electrode was modified with metal-organic framework (MOF) 235 for detecting lead ions in aqueous solutions using anodic redissolution voltammetry as analytical technique. Experimental parameters such as, amount of MOF-235, type of supporting electrolyte, potential and time deposition were evaluated to optimize the detection approach. The Pb2+ detection response of this MOF-modified electrode allowed to achieve a detection limit of about 18 μg L-1 with a correlation coefficient (R) of about 0.9962, extending in a linear concentration range from 50 to 300 μg L-1. Drinking water samples (as-received or spiked with well-known lead concentration) were analyzed to determine the concentration of lead ions. Data were also confirmed by Atomic Absorption Spectroscopy (AAS). Furthermore, the electrochemical determination when compared with the AAS, has shown that the electroanalytical approach represents a fast and quite reliable alternative for monitoring heavy metals.Institute of Chemistry Federal University of Rio Grande do NorteUnesp National Institute for Alternative Technologies of Detection Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM) Institute of Chemistry, P.O. Box 355Unesp National Institute for Alternative Technologies of Detection Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM) Institute of Chemistry, P.O. Box 355Federal University of Rio Grande do NorteUniversidade Estadual Paulista (Unesp)Batista, Luiz Carlos DomingosSantos, Thiago Izidoro Silvada Silva Santos, Victor Hugo Florênciode Oliveira, João Bosco Lucenade Moura Santos, Elaine Cristina Martinsda Silva, Djalma RibeiroMartínez-Huitle, Carlos A. [UNESP]2021-06-25T10:12:27Z2021-06-25T10:12:27Z2020-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10081-10092http://dx.doi.org/10.20964/2020.10.42International Journal of Electrochemical Science, v. 15, p. 10081-10092.1452-3981http://hdl.handle.net/11449/20526010.20964/2020.10.422-s2.0-85092061027Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengInternational Journal of Electrochemical Scienceinfo:eu-repo/semantics/openAccess2021-10-23T12:24:11Zoai:repositorio.unesp.br:11449/205260Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T16:43:54.140301Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Metal-organic framework-modified carbon paste electrode for determining lead in aqueous solutions |
title |
Metal-organic framework-modified carbon paste electrode for determining lead in aqueous solutions |
spellingShingle |
Metal-organic framework-modified carbon paste electrode for determining lead in aqueous solutions Batista, Luiz Carlos Domingos carbon paste electrode lead modified electrode MOF-235 |
title_short |
Metal-organic framework-modified carbon paste electrode for determining lead in aqueous solutions |
title_full |
Metal-organic framework-modified carbon paste electrode for determining lead in aqueous solutions |
title_fullStr |
Metal-organic framework-modified carbon paste electrode for determining lead in aqueous solutions |
title_full_unstemmed |
Metal-organic framework-modified carbon paste electrode for determining lead in aqueous solutions |
title_sort |
Metal-organic framework-modified carbon paste electrode for determining lead in aqueous solutions |
author |
Batista, Luiz Carlos Domingos |
author_facet |
Batista, Luiz Carlos Domingos Santos, Thiago Izidoro Silva da Silva Santos, Victor Hugo Florêncio de Oliveira, João Bosco Lucena de Moura Santos, Elaine Cristina Martins da Silva, Djalma Ribeiro Martínez-Huitle, Carlos A. [UNESP] |
author_role |
author |
author2 |
Santos, Thiago Izidoro Silva da Silva Santos, Victor Hugo Florêncio de Oliveira, João Bosco Lucena de Moura Santos, Elaine Cristina Martins da Silva, Djalma Ribeiro Martínez-Huitle, Carlos A. [UNESP] |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Federal University of Rio Grande do Norte Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Batista, Luiz Carlos Domingos Santos, Thiago Izidoro Silva da Silva Santos, Victor Hugo Florêncio de Oliveira, João Bosco Lucena de Moura Santos, Elaine Cristina Martins da Silva, Djalma Ribeiro Martínez-Huitle, Carlos A. [UNESP] |
dc.subject.por.fl_str_mv |
carbon paste electrode lead modified electrode MOF-235 |
topic |
carbon paste electrode lead modified electrode MOF-235 |
description |
In this work, a novel carbon paste electrode was modified with metal-organic framework (MOF) 235 for detecting lead ions in aqueous solutions using anodic redissolution voltammetry as analytical technique. Experimental parameters such as, amount of MOF-235, type of supporting electrolyte, potential and time deposition were evaluated to optimize the detection approach. The Pb2+ detection response of this MOF-modified electrode allowed to achieve a detection limit of about 18 μg L-1 with a correlation coefficient (R) of about 0.9962, extending in a linear concentration range from 50 to 300 μg L-1. Drinking water samples (as-received or spiked with well-known lead concentration) were analyzed to determine the concentration of lead ions. Data were also confirmed by Atomic Absorption Spectroscopy (AAS). Furthermore, the electrochemical determination when compared with the AAS, has shown that the electroanalytical approach represents a fast and quite reliable alternative for monitoring heavy metals. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-01-01 2021-06-25T10:12:27Z 2021-06-25T10:12:27Z |
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/10.20964/2020.10.42 International Journal of Electrochemical Science, v. 15, p. 10081-10092. 1452-3981 http://hdl.handle.net/11449/205260 10.20964/2020.10.42 2-s2.0-85092061027 |
url |
http://dx.doi.org/10.20964/2020.10.42 http://hdl.handle.net/11449/205260 |
identifier_str_mv |
International Journal of Electrochemical Science, v. 15, p. 10081-10092. 1452-3981 10.20964/2020.10.42 2-s2.0-85092061027 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
International Journal of Electrochemical Science |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
10081-10092 |
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_ |
1808128693569060864 |