Modified Carbon Paste Electrode for Kinetic Investigation and Simultaneous Determination of Ascorbic and Uric Acids

dc.creatorLima, PR
dc.creatorde Miranda, PRB
dc.creatorde Oliveira, AB
dc.creatorGoulart, MOF
dc.creatorKubota, LT
dc.date2009
dc.dateNOV
dc.date2014-11-18T17:28:48Z
dc.date2015-11-26T16:57:31Z
dc.date2014-11-18T17:28:48Z
dc.date2015-11-26T16:57:31Z
dc.date.accessioned2018-03-28T23:45:06Z
dc.date.available2018-03-28T23:45:06Z
dc.identifierElectroanalysis. Wiley-v C H Verlag Gmbh, v. 21, n. 21, n. 2311, n. 2320, 2009.
dc.identifier1040-0397
dc.identifierWOS:000272115100004
dc.identifier10.1002/elan.200904694
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/57659
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/57659
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/57659
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1277689
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionThe present work explores, for the first time, the electrocatalytic oxidation of ascorbic acid (AscH(2)) and its determination in the presence Of Uric acid (UA) on the in situ activated 4-nitrophthalonitrile modified carbon paste electrode. The kinetic constant kappa for the catalytic reaction for the electrocatalytic oxidation of ascorbic acid, evaluated by cyclic voltammetry, chronoamperometry and RDE voltammetry provided values around 10(6) L mol(-1) s(-1). The sensor provided a linear response range for AscH(2) and UA from 5.0 up to 120.0 mu mol L(-1) with detection limits of 1.6 mu mol L(-1) and 1.3 mu mol L(-1), respectively. The sensor was applied for the Simultaneous determination of AscH(2) and UA in urine samples and the average recoveries for these samples were 99.8 (+/- 3.1)% and 99.9 (+/- 2.1)%, respectively.
dc.description21
dc.description21
dc.description2311
dc.description2320
dc.descriptionINCT de Bioanalitica
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionFAPEAL
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionPADCT
dc.descriptionPROCAD/NF. PRL
dc.descriptionPRBM
dc.descriptionGerman Academic Exchange Service (DAAD)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.languageen
dc.publisherWiley-v C H Verlag Gmbh
dc.publisherWeinheim
dc.publisherAlemanha
dc.relationElectroanalysis
dc.relationElectroanalysis
dc.rightsfechado
dc.rightshttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dc.sourceWeb of Science
dc.subject4-Nitrophthalonitrile
dc.subjectAnalytical methods
dc.subjectAscorbic acid
dc.subjectUric acid
dc.subjectSensors
dc.subjectSelective Voltammetric Method
dc.subjectElectrocatalytic Oxidation
dc.subjectAmperometric Detection
dc.subjectDopamine
dc.subjectSensor
dc.subjectElectrooxidation
dc.subjectDerivatives
dc.subjectFilms
dc.subjectNadh
dc.titleModified Carbon Paste Electrode for Kinetic Investigation and Simultaneous Determination of Ascorbic and Uric Acids
dc.typeArtículos de revistas


Este ítem pertenece a la siguiente institución