A novel citrus pectin-modified carbon paste electrochemical sensor used for copper determination in biofuel

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.creatorAlves, Gustavo Murilo [UNESP]-
Autor(es): dc.creatorda Silva, José Luiz [UNESP]-
Autor(es): dc.creatorStradiotto, Nelson Ramos [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:47:19Z-
Data de disponibilização: dc.date.available2022-02-22T00:47:19Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-01-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.measurement.2020.108356-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/206502-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/206502-
Descrição: dc.descriptionThis 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%).-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionAnalytical Chemistry Department Institute of Chemistry São Paulo State University (UNESP)-
Descrição: dc.descriptionBioenergy Research Institute São Paulo State University (UNESP)-
Descrição: dc.descriptionAnalytical Chemistry Department Institute of Chemistry São Paulo State University (UNESP)-
Descrição: dc.descriptionBioenergy Research Institute São Paulo State University (UNESP)-
Descrição: dc.descriptionCNPq: 103340/2017-3-
Descrição: dc.descriptionCNPq: 123150/2015-9-
Descrição: dc.descriptionFAPESP: 2014/50945-4-
Descrição: dc.descriptionCNPq: 408783/2018-4-
Descrição: dc.descriptionCAPES: 88887.368610/2019-00-
Idioma: dc.languageen-
Relação: dc.relationMeasurement: Journal of the International Measurement Confederation-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectBioethanol fuel-
Palavras-chave: dc.subjectCarbon paste electrode-
Palavras-chave: dc.subjectCitrus pectin-
Palavras-chave: dc.subjectCopper-
Palavras-chave: dc.subjectPolysaccharide-
Palavras-chave: dc.subjectStripping voltammetry-
Título: dc.titleA novel citrus pectin-modified carbon paste electrochemical sensor used for copper determination in biofuel-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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