Flow injection amperometric determination of persulfate in cosmetic products using a Prussian Blue film-modified electrode

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorDe Oliveira, Marcelo F.
dc.creatorSaczk, Adelir A.
dc.creatorGomes Neto, José Anchieta
dc.creatorRoldan, Paulo S.
dc.creatorStradiotto, Nelson Ramos
dc.date2014-05-27T11:20:58Z
dc.date2016-10-25T18:19:07Z
dc.date2014-05-27T11:20:58Z
dc.date2016-10-25T18:19:07Z
dc.date2003-12-01
dc.date.accessioned2017-04-06T01:07:31Z
dc.date.available2017-04-06T01:07:31Z
dc.identifierSensors, v. 3, n. 9, p. 371-380, 2003.
dc.identifier1424-3210
dc.identifierhttp://hdl.handle.net/11449/67525
dc.identifierhttp://acervodigital.unesp.br/handle/11449/67525
dc.identifier10.3390/s30900371
dc.identifierWOS:000185623700005
dc.identifier2-s2.0-18444381760.pdf
dc.identifier2-s2.0-18444381760
dc.identifierhttp://dx.doi.org/10.3390/s30900371
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/888961
dc.descriptionA flow-injection system with a glassy carbon disk electrode modified with Prussian Blue film is proposed for the determination of persulfate in commercial samples of hair bleaching boosters by amperometry. The detection was obtained by chronoamperometric technique and the sample is injected into the electrochemical cell in a wall jet configuration. Potassium chloride at concentration of 0.1 mol L-1 acted as sample carrier at a flow rate of 4.0 mL min-1 and supporting-electrolyte. For 0.025 V (vs. Ag/AgCl) applied voltage, the proposed system handles ca. 160 samples per hour (1.0 10-4 - 1.0 10-3 mol L-1 of persulfate), consuming about 200 μL sample and 11 mg KCl per determination. Typical linear correlations between electrocatalytic current and persulfate concentration was ca. 0.9998. The detection limit is 9.0 10-5 mol L-1 and the calculated amperometric sensibility 3.6 103 μA L mol -1. Relative standard deviation (n =12) of a 1.0 10-4 mol L-1 sample is about 2.2%. The method was applied to persulfate determination in commercial hair-bleaching samples and results are in agreement with those obtained by titrimetry at 95% confidence level and good recoveries (95 - 112%) of spiked samples were found. © 2003 by MDPI.
dc.languageeng
dc.relationSensors
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectAmperometry
dc.subjectFlow injection analysis
dc.subjectPersulfate
dc.subjectPrussian Blue film-modified electrode
dc.subjectElectrocatalytic effects
dc.subjectPrussian blue film-modified electrode
dc.subjectCatalysis
dc.subjectConcentration (process)
dc.subjectDeposition
dc.subjectElectrochemistry
dc.subjectGraphite
dc.subjectPotassium compounds
dc.subjectReaction kinetics
dc.subjectVolumetric analysis
dc.subjectElectrodes
dc.titleFlow injection amperometric determination of persulfate in cosmetic products using a Prussian Blue film-modified electrode
dc.typeOtro


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