Voltammetric sensor for sodium nitroprusside determination in biological fluids using films of poly-L-lysine

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dc.contributor.authorPereira, Francisco Claudece
dc.contributor.authorZanoni, Maria Valnice Boldrin [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal do Rio Grande do Norte (UFRN)
dc.date.accessioned2014-05-20T15:24:45Z
dc.date.available2014-05-20T15:24:45Z
dc.date.issued2007-05-01
dc.description.abstractSodium nitroprusside (NP), a commercial vasodilator, can be pre-concentrated on vitreous carbon electrode modified by films of 97.5%: 2.5% Poly-L-lysine (PLL): glutaraldehyde (GA). This coating gives acceptable anion exchange properties whilst giving the required improvement of adhesion to the glassy carbon electrode surface. Linear response range and detection limit on nitroprusside in B-R buffer pH 4.0, were 1 x 10(-6) to 2 x 10-(5) mol L-1 and 1 x 10(-7) mol L-1, respectively. The repeatability of the proposed sensor, evaluated in term of relative standard deviation, was measured as 4.1% for 10 experiments. The voltammetric sensor was directly applied to determination of nitroprusside in human plasma and urine samples and the average recovery for these samples was around 95-97% without any pre treatment.en
dc.description.affiliationUNESP, Inst Quim, BR-14801970 Araraquara, SP, Brazil
dc.description.affiliationUniv Fed Rio Grande do Norte, Dept Quim, BR-59072970 Natal, RN, Brazil
dc.description.affiliationUnespUNESP, Inst Quim, BR-14801970 Araraquara, SP, Brazil
dc.format.extent993-998
dc.identifierhttp://dx.doi.org/10.1002/elan.200603815
dc.identifier.citationElectroanalysis. Weinheim: Wiley-v C H Verlag Gmbh, v. 19, n. 9, p. 993-998, 2007.
dc.identifier.doi10.1002/elan.200603815
dc.identifier.issn1040-0397
dc.identifier.orcid0000-0002-2296-1393
dc.identifier.urihttp://hdl.handle.net/11449/35298
dc.identifier.wosWOS:000246534700013
dc.language.isoeng
dc.publisherWiley-Blackwell
dc.relation.ispartofElectroanalysis
dc.relation.ispartofjcr2.851
dc.relation.ispartofsjr0,692
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectvoltammetric sensorpt
dc.subjectpoly-L-lysinept
dc.subjectnitroprussidept
dc.subjectbiological fluidspt
dc.titleVoltammetric sensor for sodium nitroprusside determination in biological fluids using films of poly-L-lysineen
dc.typeArtigo
dcterms.licensehttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dcterms.rightsHolderWiley-Blackwell
unesp.author.orcid0000-0002-2296-1393[2]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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Artigos - Química Analítica - IQ