CeO2 nanostructured electrochemical sensor for the simultaneous recognition of diethylstilbestrol and 17β-estradiol hormones

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dc.creatorGilberto José de Arruda
dc.creatorJaqueline da Silva Santos
dc.creatorMontcharles da Silva Pontes
dc.creatorLetícia Rocha Nunes
dc.creatorIvan Pires de Oliveira
dc.creatorAlvaro Jhovaldo Lopez Ayme
dc.creatorEtenaldo Felipe Santiago
dc.creatorRenato Grillo
dc.creatorAntonio Rogério Fiorucci
dc.creatorMatheus Bispo de Souza
dc.date.accessioned2023-12-27T21:00:09Z
dc.date.accessioned2025-09-09T01:32:02Z
dc.date.available2023-12-27T21:00:09Z
dc.date.issued2022
dc.identifier.issn0048-9697
dc.identifier.urihttps://hdl.handle.net/1843/62194
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofScience of The Total Environment
dc.rightsAcesso Restrito
dc.subjectAdsorção
dc.subjectDetectores eletroquimicos
dc.subjectDietilestilbestrol
dc.subject.otherVoltammetry
dc.subject.otherCeO2 nanoparticles
dc.subject.otherReal samples
dc.subject.otherEstrogens
dc.subject.otherAdsorption
dc.titleCeO2 nanostructured electrochemical sensor for the simultaneous recognition of diethylstilbestrol and 17β-estradiol hormones
dc.typeArtigo de periódico
local.citation.epage11
local.citation.issue805
local.citation.spage1
local.description.resumoA new highly sensitive, selective, and inexpensive electrochemical method has been developed for simultaneously detecting diethylstilbestrol (DES) and 17β-estradiol (E2) in environmental samples (groundwater and lake water) using a graphite sensor modified by cerium oxide nanoparticles (CPE-CeO2 NPs). The developed sensor and the materials used in its preparation were characterized using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD). The ab initio simulation was used to evaluate the adsorption energies between both DES and E2 with the surface of the sensor. The peak current of oxidation of both hormones showed two regions of linearity. The region of greatest sensitivity was observed for the linear range of 10 nM–100 nM. The detection and quantification limits for this concentration range were 0.8/2.6 nM and 1.3/4.3 nM for DES and E2, respectively. The analytical performance of the developed method showed high sensitivity, precision, repeatability, reproducibility, and selectivity. The CPE-CeO2 NPs sensor was successfully applied to simultaneously detect DES and E2 in real samples with recovery levels above 98%.
local.publisher.countryBrasil
local.publisher.departmentICA - INSTITUTO DE CIÊNCIAS AGRÁRIAS
local.publisher.initialsUFMG
local.url.externahttps://doi.org/10.1016/j.scitotenv.2021.150348

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