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dc.contributor.authorBatista, Isabelle V.
dc.contributor.authorLanz, Marcos R. V.
dc.contributor.authorDias, Iara L. T.
dc.contributor.authorTanaka, Sonia M. C. N.
dc.contributor.authorTanaka, Auro A.
dc.contributor.authorSotomayor, Maria Del Pilar Taboada [UNESP]
dc.identifier.citationAnalyst. Cambridge: Royal Soc Chemistry, v. 133, n. 12, p. 1692-1699, 2008.
dc.description.abstractThis work reports the use of iron tetrapyridinoporphyrazine (FeTPyPz) as a highly selective catalyst in the construction of an electrochemical sensor for estradiol valerate (EV) determination. The sensor was prepared by modifying a carbon paste with FeTPyPz. The best results were obtained in a mixture of acetonitrile (MeCN) and 0.1 mol L(-1) phosphate buffer solution (pH 6.0) in a volume ratio of 47 : 53. A linear response range was observed between 45 and 450 mmol L(-1) with a sensitivity of 12160 +/- 306 mu A L mol(-1) and quantification and detection limits of 45 and 13 mmol L(-1), respectively. The repeatability, expressed as the relative standard deviation (RSD) for n = 10, was 5.9% ([EV] = 50 mu mol(-1)). The reproducibility (RSD) for the sensor construction was better than 4% and the operational stability (RSD) over 50 measurements was 1.8%. A detailed investigation regarding the selectivity and electrochemical characteristics was carried out. Finally, in a first step to evaluate the application potential of the sensor, it was successfully applied to determine EV in a commercial formulation.en
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.publisherRoyal Soc Chemistry
dc.sourceWeb of Science
dc.titleElectrochemical sensor highly selective for estradiol valerate determination based on a modified carbon paste with iron tetrapyridinoporphyrazineen
dcterms.rightsHolderRoyal Soc Chemistry
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionUniv Sao Francisco
dc.contributor.institutionUniversidade Federal do Maranhão (UFMA)
dc.description.affiliationUniv Estadual Paulista, Inst Quim, Dept Quim Analit, BR-14801970 Araraquara, SP, Brazil
dc.description.affiliationUniv Sao Francisco, BR-12900000 Braganca Paulista, SP, Brazil
dc.description.affiliationUniversidade Federal do Maranhão (UFMA) Sao Luiz, Ctr Ciencias Exatas & Tecnol, Sao Luis, MA, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Inst Quim, Dept Quim Analit, BR-14801970 Araraquara, SP, Brazil
dc.rights.accessRightsAcesso restrito
dc.description.sponsorshipIdCNPq: 470025/2006-9
dc.description.sponsorshipIdCNPq: 479473/2006-4
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Química, Araraquarapt
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