A novel citrus pectin-modified carbon paste electrochemical sensor used for copper determination in biofuel
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.measurement.2020.108356 http://hdl.handle.net/11449/206502 |
Resumo: | This paper reports the construction of a citrus pectin-modified carbon paste electrode (PEC/CPE) which was applied for electrochemical sensitive detection of copper in biofuel. Considering its low cost of production and ease of handling, this novel sensor is a suitable alternative tool for ensuring the quality control of commercial bioethanol. Pectin carboxylic groups presence in the modified electrode helped increase its current response by 32% compared to the unmodified electrode. Under optimized conditions, using differential-pulse anodic stripping voltammetry, the analytical curve presented linear range from 5.0 × 10−8 to 1.0 × 10−4 mol L−1 (R = 0.999), with detection limit of 2.5 × 10−8 mol L−1, quantification limit of 8.3 × 10−8 mol L−1 and sensibility of 0.12 A mol−1 L. The PEC/CPE was successfully applied for copper determination in bioethanol fuel sample where recoveries ≥99% were obtained. The sensor presented good selectivity, reproducibility and repeatability (RSD ≤ 3.6%), with long-term stability over three months (RSD ≤ 6.3%). |
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Repositório Institucional da UNESP |
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A novel citrus pectin-modified carbon paste electrochemical sensor used for copper determination in biofuelBioethanol fuelCarbon paste electrodeCitrus pectinCopperPolysaccharideStripping voltammetryThis paper reports the construction of a citrus pectin-modified carbon paste electrode (PEC/CPE) which was applied for electrochemical sensitive detection of copper in biofuel. Considering its low cost of production and ease of handling, this novel sensor is a suitable alternative tool for ensuring the quality control of commercial bioethanol. Pectin carboxylic groups presence in the modified electrode helped increase its current response by 32% compared to the unmodified electrode. Under optimized conditions, using differential-pulse anodic stripping voltammetry, the analytical curve presented linear range from 5.0 × 10−8 to 1.0 × 10−4 mol L−1 (R = 0.999), with detection limit of 2.5 × 10−8 mol L−1, quantification limit of 8.3 × 10−8 mol L−1 and sensibility of 0.12 A mol−1 L. The PEC/CPE was successfully applied for copper determination in bioethanol fuel sample where recoveries ≥99% were obtained. The sensor presented good selectivity, reproducibility and repeatability (RSD ≤ 3.6%), with long-term stability over three months (RSD ≤ 6.3%).Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Analytical Chemistry Department Institute of Chemistry São Paulo State University (UNESP)Bioenergy Research Institute São Paulo State University (UNESP)Analytical Chemistry Department Institute of Chemistry São Paulo State University (UNESP)Bioenergy Research Institute São Paulo State University (UNESP)CNPq: 103340/2017-3CNPq: 123150/2015-9FAPESP: 2014/50945-4CNPq: 408783/2018-4CAPES: 88887.368610/2019-00Universidade Estadual Paulista (Unesp)Alves, Gustavo Murilo [UNESP]da Silva, José Luiz [UNESP]Stradiotto, Nelson Ramos [UNESP]2021-06-25T10:33:18Z2021-06-25T10:33:18Z2021-02-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.measurement.2020.108356Measurement: Journal of the International Measurement Confederation, v. 169.0263-2241http://hdl.handle.net/11449/20650210.1016/j.measurement.2020.1083562-s2.0-85089822021Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMeasurement: Journal of the International Measurement Confederationinfo:eu-repo/semantics/openAccess2021-10-23T07:00:46Zoai:repositorio.unesp.br:11449/206502Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T22:23:31.185543Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
A novel citrus pectin-modified carbon paste electrochemical sensor used for copper determination in biofuel |
title |
A novel citrus pectin-modified carbon paste electrochemical sensor used for copper determination in biofuel |
spellingShingle |
A novel citrus pectin-modified carbon paste electrochemical sensor used for copper determination in biofuel Alves, Gustavo Murilo [UNESP] Bioethanol fuel Carbon paste electrode Citrus pectin Copper Polysaccharide Stripping voltammetry |
title_short |
A novel citrus pectin-modified carbon paste electrochemical sensor used for copper determination in biofuel |
title_full |
A novel citrus pectin-modified carbon paste electrochemical sensor used for copper determination in biofuel |
title_fullStr |
A novel citrus pectin-modified carbon paste electrochemical sensor used for copper determination in biofuel |
title_full_unstemmed |
A novel citrus pectin-modified carbon paste electrochemical sensor used for copper determination in biofuel |
title_sort |
A novel citrus pectin-modified carbon paste electrochemical sensor used for copper determination in biofuel |
author |
Alves, Gustavo Murilo [UNESP] |
author_facet |
Alves, Gustavo Murilo [UNESP] da Silva, José Luiz [UNESP] Stradiotto, Nelson Ramos [UNESP] |
author_role |
author |
author2 |
da Silva, José Luiz [UNESP] Stradiotto, Nelson Ramos [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Alves, Gustavo Murilo [UNESP] da Silva, José Luiz [UNESP] Stradiotto, Nelson Ramos [UNESP] |
dc.subject.por.fl_str_mv |
Bioethanol fuel Carbon paste electrode Citrus pectin Copper Polysaccharide Stripping voltammetry |
topic |
Bioethanol fuel Carbon paste electrode Citrus pectin Copper Polysaccharide Stripping voltammetry |
description |
This paper reports the construction of a citrus pectin-modified carbon paste electrode (PEC/CPE) which was applied for electrochemical sensitive detection of copper in biofuel. Considering its low cost of production and ease of handling, this novel sensor is a suitable alternative tool for ensuring the quality control of commercial bioethanol. Pectin carboxylic groups presence in the modified electrode helped increase its current response by 32% compared to the unmodified electrode. Under optimized conditions, using differential-pulse anodic stripping voltammetry, the analytical curve presented linear range from 5.0 × 10−8 to 1.0 × 10−4 mol L−1 (R = 0.999), with detection limit of 2.5 × 10−8 mol L−1, quantification limit of 8.3 × 10−8 mol L−1 and sensibility of 0.12 A mol−1 L. The PEC/CPE was successfully applied for copper determination in bioethanol fuel sample where recoveries ≥99% were obtained. The sensor presented good selectivity, reproducibility and repeatability (RSD ≤ 3.6%), with long-term stability over three months (RSD ≤ 6.3%). |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-06-25T10:33:18Z 2021-06-25T10:33:18Z 2021-02-01 |
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/10.1016/j.measurement.2020.108356 Measurement: Journal of the International Measurement Confederation, v. 169. 0263-2241 http://hdl.handle.net/11449/206502 10.1016/j.measurement.2020.108356 2-s2.0-85089822021 |
url |
http://dx.doi.org/10.1016/j.measurement.2020.108356 http://hdl.handle.net/11449/206502 |
identifier_str_mv |
Measurement: Journal of the International Measurement Confederation, v. 169. 0263-2241 10.1016/j.measurement.2020.108356 2-s2.0-85089822021 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Measurement: Journal of the International Measurement Confederation |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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_ |
1808129423302459392 |