Voltammetric determination of cadmium using magnetic graphite-epoxy composite electrode modified with magnetic nanoparticles

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual de Londrina (UEL)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorFederal Institute of Parana (IFPR)-
Autor(es): dc.contributorToxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM)-
Autor(es): dc.contributorUniversidade Estadual de Campinas (UNICAMP)-
Autor(es): dc.creatordos Santos, Paula Mantovani-
Autor(es): dc.creatorGorla, Felipe Augusto-
Autor(es): dc.creatorWong, Ademar-
Autor(es): dc.creatorCorazza, Marcela Zanetti-
Autor(es): dc.creatorSotomayor, Maria D.P.T.-
Autor(es): dc.creatorTarley, César Ricardo Teixeira-
Data de aceite: dc.date.accessioned2025-08-21T16:20:34Z-
Data de disponibilização: dc.date.available2025-08-21T16:20:34Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2025-09-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.talanta.2025.127982-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/300111-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/300111-
Descrição: dc.descriptionIn this study, a new analytical method for determining cadmium (Cd2+) was developed, combining dispersive magnetic solid-phase extraction (DMSPE) and voltammetric analysis using a magnetic graphite-epoxy composite electrode (m-GEC). The method utilizes a magnetic adsorbent, m-poly(ATU)-PAN, which consists of poly(allylthiourea) functionalized with the 1-(2-pyridylaz)-2-naphthol (PAN) ligand, providing high adsorption capacity for Cd2+ extraction. The m-poly(ATU)-PAN adsorbent was characterized by FTIR (Fourier Transform Infrared Spectroscopy), XRD (X-ray Diffraction), textural parameters, and TEM (Transmission Electron Microscopy), revealing reduced porosity and specific surface area after PAN functionalization, indicating successful modification of the polymer. The material's complex morphology favors the adsorption of Cd2+. The extraction and determination process involves two main steps: (1) Cd2+ extraction via DMSPE using m-poly(ATU)-PAN, and (2) Cd2+ detection using square wave anodic stripping voltammetry (SWASV) on m-GEC. Experimental conditions, including sorbent amount, pH, extraction time, and voltammetric parameters, were optimized. Compared to other methods for Cd2+ extraction and preconcentration, the proposed approach showed significant advantages, including a high anodic peak current for a sample at a Cd2+ concentration of 50.0 μg L−1. The method demonstrated good repeatability, stability, and low detection and quantification limits. Finally, the proposed sensor proved promising for the electrochemical determination of Cd2+ in water and cocoa bean samples, offering potential applications in environmental monitoring and food safety.-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionPolska Akademia Nauk-
Descrição: dc.descriptionState University of Londrina (UEL) Chemistry Department, Paraná-
Descrição: dc.descriptionSão Paulo State University (UNESP) Institute of Chemistry, SP-
Descrição: dc.descriptionFederal Institute of Parana (IFPR) Campus Umuarama, Rodovia PR 323, KM 302, Parque Industrial, Paraná-
Descrição: dc.descriptionNational Institute for Alternative Technologies of Detection Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM), São Paulo-
Descrição: dc.descriptionNational Institute of Science and Technology of Bioanalytics (INCTBio) State University of Campinas (UNICAMP) Institute of Chemistry Department of Analytical Chemistry, São Paulo-
Descrição: dc.descriptionSão Paulo State University (UNESP) Institute of Chemistry, SP-
Descrição: dc.descriptionCNPq: 102213/2024-0-
Descrição: dc.descriptionCNPq: 142485/2020-9-
Descrição: dc.descriptionCNPq: 150256/2024-8-
Idioma: dc.languageen-
Relação: dc.relationTalanta-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectCadmium detection and SWASV-
Palavras-chave: dc.subjectDMSPE-
Palavras-chave: dc.subjectMagnetic graphite-epoxy electrode-
Palavras-chave: dc.subjectSensitive electrochemical method-
Título: dc.titleVoltammetric determination of cadmium using magnetic graphite-epoxy composite electrode modified with magnetic nanoparticles-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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