An intervalence complex on chitosan surface and its application for isoniazid detection in synthetic samples

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorScience and Technology of Goiás-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.creatorPereira Barbosa, Priscila Fernanda [UNESP]-
Autor(es): dc.creatorAlbuquerque Andrade, Rômulo Davi-
Autor(es): dc.creatorVieira, Eduardo Guimarães-
Autor(es): dc.creatorRibeiro do Carmo, Devaney [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:30:00Z-
Data de disponibilização: dc.date.available2022-02-22T00:30:00Z-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-06-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.solidstatesciences.2020.106204-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/200265-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/200265-
Descrição: dc.descriptionIn the current article it is described the preparation of a natural polymeric material formed by chitosan and a complex (copper hexacyanoferrate II) for application as voltammetric sensor for isoniazid (ISO) using a carbon paste electrode (GPE). The material (CuFeCHT) was characterized by scanning electron microscopy (SEM), infrared spectroscopy (FT-IR), X-Ray diffraction (XDR) and Energy Dispersion Spectroscopy (EDS). The CuFeCHT voltammetric behavior was achieved using a GPE which showed two redox couples with formal potential (Eθ’) of 0,30 and 0,73 for each process, attributed to Cu+/Cu2+ and Fe2+(CN)6/Fe3+(CN)6 processes, respectively (KCl; 1.00 mol L−1; ν = 20 mV s−1; 40% (w/w)). ISO determination was carried out employing cyclic voltammetry (CV) and square wave voltammetry (SWV). For SWV method a detection limit (3σ) of 2.47 × 10−5 mol L−1 with relative standard deviation of 0,7% (n = 3) and amperometric sensitivity of 7.13 × 10−3 A mol L−1 was achieved. The effect of concomitant species on the voltammetric response was investigated using both techniques and the proposed methodology was applied for ISO determination using synthetic human urine samples spiked with ISO. Recovery values varied from between 98.28 and 105.14% for CV and between 95.29% and 100.93%.-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionSão Paulo State University (Unesp) School of Engineering Department of Physics and Chemistry Campus of Ilha Solteira-
Descrição: dc.descriptionFederal Institute of Education Science and Technology of Goiás Campus of Luziânia-
Descrição: dc.descriptionDepartment of Fundamental Chemistry Institute of Chemistry University of São Paulo-
Descrição: dc.descriptionSão Paulo State University (Unesp) School of Engineering Department of Physics and Chemistry Campus of Ilha Solteira-
Idioma: dc.languageen-
Relação: dc.relationSolid State Sciences-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectChitosan-
Palavras-chave: dc.subjectCopper hexacyanoferrate-
Palavras-chave: dc.subjectCyclic voltammetry-
Palavras-chave: dc.subjectSquare wave isoniazid-
Título: dc.titleAn intervalence complex on chitosan surface and its application for isoniazid detection in synthetic samples-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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