Development of a voltammetric sensor for chromium(VI) determination in wastewater sample

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dc.contributor.authorBergamini, Marcio F.
dc.contributor.authordos Santos, Daniela P.
dc.contributor.authorZanoni, Maria Valnice Boldrin [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:27:56Z
dc.date.available2014-05-20T15:27:56Z
dc.date.issued2007-05-21
dc.description.abstractScreen-printed carbon electrode (SPCE) modified with poly-L-histidine film can be successfully applied for chromium(VI) determination based on its pre-concentration. Optimum adherence and stability of the POIY-L-histidine film was obtained by direct addition of PH solution 1% (w/v) on the electrode surface, followed by heating at 80 degrees C during 5 min. Linear response range, sensitivity and limit of detection were 0. 1-150 [mu mol L-1, 4. 13 LA mu mol L` and 0.046 mu mol L-1. The repeatability of the proposed sensor, evaluated in terms of relative standard deviation, was measured as 3.2% for 10 experiments in 40 mu mol L-1 using the same electrode and 4.0% using screen-printed electrode as disposable sensor, respectively. The voltammetric sensor was applied to determination of Cr(VI) and indirect determination of Cr(III) in wastewater samples previously treated by a leather dyeing industry and the average recovery for these samples was around 97%. (C) 2006 Elsevier B.V. All rights reserved.en
dc.description.affiliationUNESP, Dept Quim Analit, Inst Quim, BR-14801970 Araraquara, Brazil
dc.description.affiliationUnespUNESP, Dept Quim Analit, Inst Quim, BR-14801970 Araraquara, Brazil
dc.format.extent902-908
dc.identifierhttp://dx.doi.org/10.1016/j.snb.2006.10.062
dc.identifier.citationSensors and Actuators B-chemical. Lausanne: Elsevier B.V. Sa, v. 123, n. 2, p. 902-908, 2007.
dc.identifier.doi10.1016/j.snb.2006.10.062
dc.identifier.issn0925-4005
dc.identifier.orcid0000-0002-2296-1393
dc.identifier.urihttp://hdl.handle.net/11449/37847
dc.identifier.wosWOS:000247060100037
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofSensors and Actuators B: Chemical
dc.relation.ispartofjcr5.667
dc.relation.ispartofsjr1,406
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectchromium(VI)pt
dc.subjectstripping analysispt
dc.subjectscreen-printed modified electrodept
dc.subjectpoly-L-histidinept
dc.titleDevelopment of a voltammetric sensor for chromium(VI) determination in wastewater sampleen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.orcid0000-0002-2296-1393[3]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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Artigos - Química Analítica - IQ