Extraction-assisted voltammetric determination of homocysteine using magnetic nanoparticles modified with molecularly imprinted polymer

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Federal de Alagoas-
Autor(es): dc.contributorAvenida dos Portugueses-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorNational Institute of Science and Technology of Bioanalytics (INCT-Bio)-
Autor(es): dc.creatorda Conceição, Poliana-
Autor(es): dc.creatordos Santos Neto, Antonio Gomes-
Autor(es): dc.creatorKhan, Sabir-
Autor(es): dc.creatorTanaka, Auro A.-
Autor(es): dc.creatorSantana, Antônio Euzébio G.-
Autor(es): dc.creatordel Pilar Taboada-Sotomayor, Maria-
Autor(es): dc.creatorGoulart, Marília O. F.-
Autor(es): dc.creatorSantos, Ana Caroline Ferreira-
Data de aceite: dc.date.accessioned2025-08-21T19:04:38Z-
Data de disponibilização: dc.date.available2025-08-21T19:04:38Z-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-04-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1007/s00604-023-05738-7-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/247052-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/247052-
Descrição: dc.descriptionA magnetic graphite-epoxy composite (m-GEC) electrochemical sensor is presented based on magnetic imprinted polymer (mag-MIP) to determine homocysteine (Hcy). Mag-MIP was synthesized via precipitation polymerization, using functionalized magnetic nanoparticles (Fe3O4) together with the template molecule (Hcy), the functional monomer 2-hydroxyethyl methacrylate (HEMA), and the structural monomer trimethylolpropane trimethacrylate (TRIM). For mag-NIP (magnetic non-imprinted polymer), the procedure was the same in the absence of Hcy. Morphological and structural properties of the resultant mag-MIP and mag-NIP were examined using TEM, FT-IR, and Vibrating Sample Magnetometer. Under optimized conditions, the m-GEC/mag-MIP sensor showed a linear range of 0.1–2 µmol L−1, with a limit of detection (LOD) of 0.030 µmol L−1. In addition, the proposed sensor responded selectively to Hcy compared to several interferents present in biological samples. The recovery values determined by differential pulse voltammetry (DPV) were close to 100% for natural and synthetic samples, indicating good method accuracy. The developed electrochemical sensor proves to be a suitable device for determining Hcy, with advantages related to magnetic separation and electrochemical analysis.-
Descrição: dc.descriptionPrograma de Pós-graduação em Química e Biotecnologia (PPGQB) Instituto de Química e Biotecnologia Universidade Federal de Alagoas, Campus A.C. Simões, Tabuleiro dos Martins, AL-
Descrição: dc.descriptionDepartamento de Química Universidade Federal do Maranhão Avenida dos Portugueses, MA-
Descrição: dc.descriptionInstituto de Química INCT-DATREM Universidade Estadual Paulista, Rua Prof. Francisco Degni, 55, SP-
Descrição: dc.descriptionNational Institute of Science and Technology of Bioanalytics (INCT-Bio)-
Descrição: dc.descriptionInstituto de Química INCT-DATREM Universidade Estadual Paulista, Rua Prof. Francisco Degni, 55, SP-
Idioma: dc.languageen-
Relação: dc.relationMicrochimica Acta-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectDifferential pulse voltammetry-
Palavras-chave: dc.subjectElectroanalysis-
Palavras-chave: dc.subjectElectrochemical sensor-
Palavras-chave: dc.subjectFe3O4 nanoparticles-
Palavras-chave: dc.subjectHyperhomocysteinemia-
Palavras-chave: dc.subjectMagnetic molecularly imprinted polymer-
Título: dc.titleExtraction-assisted voltammetric determination of homocysteine using magnetic nanoparticles modified with molecularly imprinted polymer-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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