Selective UV-filter detection with sensors based on stainless steel electrodes modified with polyaniline doped with metal tetrasulfonated phthalocyanine films

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dc.contributor.authorMoreira, Luiz Fernando
dc.contributor.authorde Vasconcelos Lanza, Marcos Roberto
dc.contributor.authorTanaka, Auro Atsushi
dc.contributor.authorTaboada Sotomayor, Maria Del Pilar [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniv Sao Francisco
dc.contributor.institutionUniversidade Federal do Maranhão (UFMA)
dc.date.accessioned2014-05-20T15:32:50Z
dc.date.available2014-05-20T15:32:50Z
dc.date.issued2009-01-01
dc.description.abstractThis work describes the construction and application of two amperometric sensors for sensitive UV-filter determination. The sensors were prepared using stainless steel electrodes in which polyaniline (PANI) was electrochemically polymerized in the presence of nickel (NiPcTS) or iron (FePcTS) tetrasulfonated phthalocyanines. The sensor surface characterizations were carried out using atomic force microscopy (AFM). The PANI/NiPcTS sensor was selective for the chemical UV-filter p-aminobenzoic acid (PABA) and the PANI/FePcTS sensor was selective for octyldimethyl-PABA (ODP), both in a mixture of tetrahydrofuran (THF) and 0.1 mol L(-1) H(2)SO(4) at a volume ratio of 30 : 70, and with an applied potential of 0.0 mV vs. Ag vertical bar AgCl. A detailed investigation of the selectivity was carried out for both sensors, in order to determine their responses for ten different UV filters. Finally, each sensor was successfully applied to PABA or ODP quantification in sunscreen formulations and water from swimming pools.en
dc.description.affiliationUniv Estadual Paulista, 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), Ctr Ciencias Exatas & Tecnol, Sao Luis, MA, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Dept Quim Analit, BR-14801970 Araraquara, SP, Brazil
dc.format.extent1453-1461
dc.identifierhttp://dx.doi.org/10.1039/b902273b
dc.identifier.citationAnalyst. Cambridge: Royal Soc Chemistry, v. 134, n. 7, p. 1453-1461, 2009.
dc.identifier.doi10.1039/b902273b
dc.identifier.issn0003-2654
dc.identifier.urihttp://hdl.handle.net/11449/41635
dc.identifier.wosWOS:000267499800028
dc.language.isoeng
dc.publisherRoyal Soc Chemistry
dc.relation.ispartofAnalyst
dc.relation.ispartofjcr3.864
dc.relation.ispartofsjr1,249
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.titleSelective UV-filter detection with sensors based on stainless steel electrodes modified with polyaniline doped with metal tetrasulfonated phthalocyanine filmsen
dc.typeArtigo
dcterms.licensehttp://www.rsc.org/AboutUs/Copyright/Authordeposition.asp
dcterms.rightsHolderRoyal Soc Chemistry
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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