Voltammetric sensor based on glassy carbon electrode modified with hierarchical porous carbon, silver sulfide nanoparticles and fullerene for electrochemical monitoring of nitrite in food samples

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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.contributorUniversidad Nacional de Ingeniería-
Autor(es): dc.creatorWong, Ademar-
Autor(es): dc.creatorSantos, Anderson M.-
Autor(es): dc.creatorCardenas-Riojas, Andy A.-
Autor(es): dc.creatorBaena-Moncada, Angélica M.-
Autor(es): dc.creatorSotomayor, Maria D.P.T.-
Data de aceite: dc.date.accessioned2025-08-21T20:28:06Z-
Data de disponibilização: dc.date.available2025-08-21T20:28:06Z-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-07-30-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.foodchem.2022.132384-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/231617-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/231617-
Descrição: dc.descriptionThis paper reports the development of a voltammetric sensor using glassy carbon electrode based on hierarchical porous carbon (HPC) with silver sulfide nanoparticles (Ag2SNP), Nafion and fullerene (C60) for the determination of nitrite in foods. Raman spectroscopy, scanning electron microscopy, transmission electron microscopy and energy-dispersive X-ray were used to characterize the morphology and composition of the materials. The use of HPC and C60 in the construction of the electrode contributed toward the enlargement of the specific surface area and the improvement of the electrochemical performance of the device. The electrochemical behavior of nitrite in different electrodes was evaluated by cyclic voltammetry in the potential range of 0.4 – 1 V. Using the optimal conditions, a linear response ranges of 4.0 – 148 μmol L−1, a limit of detection of 0.09 μmol L−1 and a sensitivity of 0.05 μA μmol L−1 cm−2 were obtained. The results showed that the proposed method can selectively detect nitrite in the presence of other compounds without interference and with good stability. The proposed method was successfully applied for the detection of nitrite in food samples where it demonstrated a good degree of accuracy and satisfactory efficiency.-
Descrição: dc.descriptionInstitute of Chemistry State University of São Paulo (UNESP), SP-
Descrição: dc.descriptionNational Institute for Detection of Alternative Technologies Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM), SP-
Descrição: dc.descriptionLaboratorio de Investigación de Electroquímica Aplicada Facultad de Ciencias Universidad Nacional de Ingeniería, Av. Tupac Amaru 210, Lima-
Descrição: dc.descriptionInstitute of Chemistry State University of São Paulo (UNESP), SP-
Idioma: dc.languageen-
Relação: dc.relationFood Chemistry-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectElectrochemical sensor-
Palavras-chave: dc.subjectFood samples-
Palavras-chave: dc.subjectFullerene-
Palavras-chave: dc.subjectHPC-Ag2SNP-
Palavras-chave: dc.subjectNitrite-
Título: dc.titleVoltammetric sensor based on glassy carbon electrode modified with hierarchical porous carbon, silver sulfide nanoparticles and fullerene for electrochemical monitoring of nitrite in food samples-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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