Voltammetric determination of ethinylestradiol using screen-printed electrode modified with functionalized graphene, graphene quantum dots and magnetic nanoparticles coated with molecularly imprinted polymers

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Federal de São Carlos (UFSCar)-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorINCT DATREM-
Autor(es): dc.creatorSantos, Anderson M.-
Autor(es): dc.creatorWong, Ademar [UNESP]-
Autor(es): dc.creatorPrado, Thiago M.-
Autor(es): dc.creatorFava, Elson L.-
Autor(es): dc.creatorFatibello-Filho, Orlando-
Autor(es): dc.creatorSotomayor, Maria D. P. T. [UNESP]-
Autor(es): dc.creatorMoraes, Fernando C.-
Data de aceite: dc.date.accessioned2022-02-22T00:57:41Z-
Data de disponibilização: dc.date.available2022-02-22T00:57:41Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-03-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.talanta.2020.121804-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/209809-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/209809-
Descrição: dc.descriptionThe present work reports the development of a sensitive and selective method for ethinylestradiol detection using screen-printed electrode (SPE) modified with functionalized graphene (FG), graphene quantum dots (GQDs) and magnetic nanoparticles coated with molecularly imprinted polymers (mag@MIP). The performance of the mag@MIP sensor was compared with that of a non-molecularly imprinted sensor (mag@NIP). Chemical and physical characterizations of the mag@NIP and mag@MIP sensors were performed using scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS) and Brunauer-Emmett-Teller (BET) techniques. The electrochemical behavior of the electrodes investigated, which included (mag@MIP)-GQDs-FG-NF/SPE, (mag@NIP)-GQDs-FG-NF/SPE, GQDs-FG-NF/SPE and FG-NF/SPE, was evaluated by cyclic voltammetry. The results obtained show a significant increase in peak current magnitude for (mag@MIP)-GQDs-FG-NF/SPE. Using square wave voltammetry experiments, the efficiency of the (mag@MIP)-GQDs-FG-NF/SPE sensor was also tested under optimized conditions. The linear response range obtained for ethinylestradiol concentration was 10 nmol L-1 to 2.5 mu mol L-1, with limit of detection of 2.6 nmol L-1. The analytical signal of the (mag@MIP)-GQDs-FG-NF/SPE sensor suffered no interference from different compounds and the sensor exhibited good repeatability. The proposed sensor was successfully applied for ethynilestradiol detection in river water, serum and urine samples, where recovery rates between 96 to 105% and 97-104% were obtained for environmental and biological samples, respectively.-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionPROJ. AUX/PE/PROEX-
Descrição: dc.descriptionUniv Fed Sao Carlos, Dept Chem, Rod Washington Luis Km 235,POB 676, BR-13560970 Sao Carlos, SP, Brazil-
Descrição: dc.descriptionState Univ Sao Paulo, Inst Chem, Dept Analyt Chem, BR-14801970 Araraquara, SP, Brazil-
Descrição: dc.descriptionINCT DATREM, BR-14801970 Araraquara, SP, Brazil-
Descrição: dc.descriptionState Univ Sao Paulo, Inst Chem, Dept Analyt Chem, BR-14801970 Araraquara, SP, Brazil-
Descrição: dc.descriptionCAPES: 001-
Descrição: dc.descriptionCNPq: 150184/2019-0-
Descrição: dc.descriptionCNPq: 405546/2018-1-
Descrição: dc.descriptionCNPq: 408050/2018-7-
Descrição: dc.descriptionFAPESP: 2017/10118-0-
Descrição: dc.descriptionFAPESP: 2016/10012-4-
Descrição: dc.descriptionFAPESP: 2019/00677-7-
Descrição: dc.descriptionFAPESP: 2020/01050-5-
Descrição: dc.descriptionPROJ. AUX/PE/PROEX: 0674/2018 CAPES-
Formato: dc.format9-
Idioma: dc.languageen-
Publicador: dc.publisherElsevier B.V.-
Relação: dc.relationTalanta-
???dc.source???: dc.sourceWeb of Science-
Palavras-chave: dc.subjectMIP-
Palavras-chave: dc.subjectGraphene-
Palavras-chave: dc.subjectQuantum dots-
Palavras-chave: dc.subjectScreen-printed electrode-
Palavras-chave: dc.subjectEthinylestradiol-
Título: dc.titleVoltammetric determination of ethinylestradiol using screen-printed electrode modified with functionalized graphene, graphene quantum dots and magnetic nanoparticles coated with molecularly imprinted polymers-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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