Logo do repositório
 

Voltammetric sensor for simultaneous determination of p-phenylenediamine and resorcinol in permanent hair dyeing and tap water by composite carbon nanotubes/chitosan modified electrode

dc.contributor.authorHudari, Felipe Fantinato [UNESP]
dc.contributor.authorAlmeida, Lucio Cesar de [UNESP]
dc.contributor.authorSilva, Bianca Ferreira da [UNESP]
dc.contributor.authorZanoni, Maria Valnice Boldrin [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2015-03-18T15:53:41Z
dc.date.available2015-03-18T15:53:41Z
dc.date.issued2014-09-01
dc.description.abstractp-Phenylenediamine (PPD) and resorcinol (RSN) are hair dye precursors of permanent dyeing more used worldwide. The present work describes a simple and economic voltammetric sensor for simultaneous determination of both components in commercial hair dyeing and tap water at low concentrations. PPD and RSN are oxidized at + 0.17 and + 0.61 V vs. Ag/AgCl at glassy carbon electrode coated by composites of multiwall carbon nanotubes with chitosan (MWNTs-CHT/GCE), which anodic currents density normalized are 10% and 70% higher in relation to the unmodified electrode, respectively. The calibration curve for simultaneous determination of PPD and RSN showed linearity between 0.55 and 21.2 mg L-1 with detection limits of 0.79 and 0.58 mg L-1 to PPD and RSN, respectively. The relative standard deviations found for ten determinations were of 0.73 and 2.35% to 2.70 mg L-1, and 0.87 and 1.08% to 15.96 mg L-1 to PPD and RSN, respectively. The voltammetric sensor was applied to determination of PPD and RSN in tap water and commercial hair dyeing samples and the average recovery for these samples was around 97%. The products generated from PPD and RSN reaction such as was p-quinonediimine and bandrowski base were detected by LC-MS/MS and UV-vis spectrophotometry. (C) 2014 Published by Elsevier B.V.en
dc.description.affiliationUniv Estadual Paulista, UNESP, Inst Quim Araraquara, Dept Quim, BR-14800900 Araraquara, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, UNESP, Inst Quim Araraquara, Dept Quim, BR-14800900 Araraquara, SP, Brazil
dc.format.extent261-268
dc.identifierhttp://dx.doi.org/10.1016/j.microc.2014.05.007
dc.identifier.citationMicrochemical Journal. Amsterdam: Elsevier Science Bv, v. 116, p. 261-268, 2014.
dc.identifier.doi10.1016/j.microc.2014.05.007
dc.identifier.issn0026-265X
dc.identifier.orcid0000-0002-2296-1393
dc.identifier.urihttp://hdl.handle.net/11449/116663
dc.identifier.wosWOS:000339134700035
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofMicrochemical Journal
dc.relation.ispartofjcr2.746
dc.rights.accessRightsAcesso restritopt
dc.sourceWeb of Science
dc.subjectp-Phenylenediamineen
dc.subjectResorcinolen
dc.subjectModified glassy carbon electrodeen
dc.subjectHair dyeen
dc.titleVoltammetric sensor for simultaneous determination of p-phenylenediamine and resorcinol in permanent hair dyeing and tap water by composite carbon nanotubes/chitosan modified electrodeen
dc.typeArtigopt
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
dspace.entity.typePublication
relation.isOrgUnitOfPublicationbc74a1ce-4c4c-4dad-8378-83962d76c4fd
relation.isOrgUnitOfPublication.latestForDiscoverybc74a1ce-4c4c-4dad-8378-83962d76c4fd
unesp.author.orcid0000-0002-2296-1393[4]
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Química, Araraquarapt
unesp.departmentQuímica Analítica - IQARpt

Arquivos