A new electrochemical sensor based on eco-friendly chemistry for the simultaneous determination of toxic trace elements

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorToxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM)-
Autor(es): dc.contributorFederal University of Mato Grosso do Sul-
Autor(es): dc.contributorFederal University of Rio de Janeiro-
Autor(es): dc.contributorNational Institute of Science & Technology of Bioanalytics (INCTBio)-
Autor(es): dc.contributorUniversidade Federal de Uberlândia (UFU)-
Autor(es): dc.creatorWong, Ademar [UNESP]-
Autor(es): dc.creatorA. Ferreira, Priscila-
Autor(es): dc.creatorSantos, Anderson M. [UNESP]-
Autor(es): dc.creatorCincotto, Fernando H.-
Autor(es): dc.creatorSilva, Rodrigo A.B.-
Autor(es): dc.creatorSotomayor, Maria D.P.T. [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:31:44Z-
Data de disponibilização: dc.date.available2022-02-22T00:31:44Z-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-10-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.microc.2020.105292-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/200799-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/200799-
Descrição: dc.descriptionA method using glassy carbon electrode containing biochar, nanodiamonds and chitosan has been developed for simultaneous voltammetric quantification of cadmium and lead. The developed material was characterised by microscopy (transmission electron and scanning electron) and square-wave anodic stripping voltammetry. Using optimum conditions, the sensor exhibited excellent response for the simultaneous quantification of metal ions. High electrochemical sensitivities of 0.42 and 5.3 μA μmol−1 cm−2 was found for Cd and Pb quantification, respectively. Well separated peaks at −0.64 and −0.42 V vs. Ag/AgCl(KClsat) were obtained, as well as low limits of detection of 0.11 and 0.056 µmol L−1 and linear ranges of 1.0 to 75.0 and 0.25 to 6.0 μmol L−1 for cadmium and lead quantification, respectively. The modified GCE exhibited good repeatability, stability for 30 days and reproducibility (with a relative standard deviation between 4.6% and 4.9% for n = 5). The developed sensor presents high robustness, requiring no step cleaning of the electrode surface to remove any remaining bonded metals. An ecologically friendly, low cost and high yield electrode was therefore developed for the simultaneous determination of two toxic metals in real environmental samples applying square-wave anodic stripping voltammetry.-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionDepartment of Analytical Chemistry Institute of Chemistry State University of São Paulo (UNESP)-
Descrição: dc.descriptionNational Institute for Alternative Technologies of Detection Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM)-
Descrição: dc.descriptionInstitute of Chemistry Federal University of Mato Grosso do Sul-
Descrição: dc.descriptionInstitute of Chemistry Federal University of Rio de Janeiro-
Descrição: dc.descriptionNational Institute of Science & Technology of Bioanalytics (INCTBio)-
Descrição: dc.descriptionInstitute of Chemistry Federal University of Uberlândia-
Descrição: dc.descriptionDepartment of Analytical Chemistry Institute of Chemistry State University of São Paulo (UNESP)-
Idioma: dc.languageen-
Relação: dc.relationMicrochemical Journal-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectBiochar-
Palavras-chave: dc.subjectElectrochemical sensors-
Palavras-chave: dc.subjectEnvironmentally-friendly chemical sensors-
Palavras-chave: dc.subjectNanodiamonds-
Palavras-chave: dc.subjectReal environmental samples-
Palavras-chave: dc.subjectToxic metal determination-
Título: dc.titleA new electrochemical sensor based on eco-friendly chemistry for the simultaneous determination of toxic trace elements-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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