Flow injection amperometric determination of persulfate in cosmetic products using a Prussian Blue film-modified electrode
Autor(a) principal: | |
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Data de Publicação: | 2003 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.3390/s30900371 http://hdl.handle.net/11449/67525 |
Resumo: | A 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. |
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Repositório Institucional da UNESP |
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Flow injection amperometric determination of persulfate in cosmetic products using a Prussian Blue film-modified electrodeAmperometryFlow injection analysisPersulfatePrussian Blue film-modified electrodeElectrocatalytic effectsPrussian blue film-modified electrodeCatalysisConcentration (process)DepositionElectrochemistryGraphitePotassium compoundsReaction kineticsVolumetric analysisElectrodesA 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.Departameno de Quimica Analitica Universidade Estadual Paulista, PO Box 355, 14800-900, Araraquara-SPDepartameno de Quimica Analitica Universidade Estadual Paulista, PO Box 355, 14800-900, Araraquara-SPUniversidade Estadual Paulista (Unesp)De Oliveira, Marcelo F. [UNESP]Saczk, Adelir A. [UNESP]Gomes Neto, José Anchieta [UNESP]Roldan, Paulo S. [UNESP]Stradiotto, Nelson Ramos [UNESP]2014-05-27T11:20:58Z2014-05-27T11:20:58Z2003-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article371-380application/pdfhttp://dx.doi.org/10.3390/s30900371Sensors, v. 3, n. 9, p. 371-380, 2003.1424-3210http://hdl.handle.net/11449/6752510.3390/s30900371WOS:0001856237000052-s2.0-184443817602-s2.0-18444381760.pdf87087356998465780072173018005712Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengSensors0,584info:eu-repo/semantics/openAccess2024-01-28T06:47:31Zoai:repositorio.unesp.br:11449/67525Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-01-28T06:47:31Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Flow injection amperometric determination of persulfate in cosmetic products using a Prussian Blue film-modified electrode |
title |
Flow injection amperometric determination of persulfate in cosmetic products using a Prussian Blue film-modified electrode |
spellingShingle |
Flow injection amperometric determination of persulfate in cosmetic products using a Prussian Blue film-modified electrode De Oliveira, Marcelo F. [UNESP] Amperometry Flow injection analysis Persulfate Prussian Blue film-modified electrode Electrocatalytic effects Prussian blue film-modified electrode Catalysis Concentration (process) Deposition Electrochemistry Graphite Potassium compounds Reaction kinetics Volumetric analysis Electrodes |
title_short |
Flow injection amperometric determination of persulfate in cosmetic products using a Prussian Blue film-modified electrode |
title_full |
Flow injection amperometric determination of persulfate in cosmetic products using a Prussian Blue film-modified electrode |
title_fullStr |
Flow injection amperometric determination of persulfate in cosmetic products using a Prussian Blue film-modified electrode |
title_full_unstemmed |
Flow injection amperometric determination of persulfate in cosmetic products using a Prussian Blue film-modified electrode |
title_sort |
Flow injection amperometric determination of persulfate in cosmetic products using a Prussian Blue film-modified electrode |
author |
De Oliveira, Marcelo F. [UNESP] |
author_facet |
De Oliveira, Marcelo F. [UNESP] Saczk, Adelir A. [UNESP] Gomes Neto, José Anchieta [UNESP] Roldan, Paulo S. [UNESP] Stradiotto, Nelson Ramos [UNESP] |
author_role |
author |
author2 |
Saczk, Adelir A. [UNESP] Gomes Neto, José Anchieta [UNESP] Roldan, Paulo S. [UNESP] Stradiotto, Nelson Ramos [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
De Oliveira, Marcelo F. [UNESP] Saczk, Adelir A. [UNESP] Gomes Neto, José Anchieta [UNESP] Roldan, Paulo S. [UNESP] Stradiotto, Nelson Ramos [UNESP] |
dc.subject.por.fl_str_mv |
Amperometry Flow injection analysis Persulfate Prussian Blue film-modified electrode Electrocatalytic effects Prussian blue film-modified electrode Catalysis Concentration (process) Deposition Electrochemistry Graphite Potassium compounds Reaction kinetics Volumetric analysis Electrodes |
topic |
Amperometry Flow injection analysis Persulfate Prussian Blue film-modified electrode Electrocatalytic effects Prussian blue film-modified electrode Catalysis Concentration (process) Deposition Electrochemistry Graphite Potassium compounds Reaction kinetics Volumetric analysis Electrodes |
description |
A 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. |
publishDate |
2003 |
dc.date.none.fl_str_mv |
2003-12-01 2014-05-27T11:20:58Z 2014-05-27T11:20:58Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.3390/s30900371 Sensors, v. 3, n. 9, p. 371-380, 2003. 1424-3210 http://hdl.handle.net/11449/67525 10.3390/s30900371 WOS:000185623700005 2-s2.0-18444381760 2-s2.0-18444381760.pdf 8708735699846578 0072173018005712 |
url |
http://dx.doi.org/10.3390/s30900371 http://hdl.handle.net/11449/67525 |
identifier_str_mv |
Sensors, v. 3, n. 9, p. 371-380, 2003. 1424-3210 10.3390/s30900371 WOS:000185623700005 2-s2.0-18444381760 2-s2.0-18444381760.pdf 8708735699846578 0072173018005712 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Sensors 0,584 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
371-380 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1803047485665443840 |