Determination of N-acetylcysteine by cyclic voltammetry using modified carbon paste electrode with copper nitroprusside adsorbed on the 3-aminopropylsilica

Detalhes bibliográficos
Autor(a) principal: de Sá, Acelino Cardoso [UNESP]
Data de Publicação: 2011
Outros Autores: Paim, Leonardo L. [UNESP], Bicalho, Urquisa de Oliveira [UNESP], do Carmo, Devaney Ribeiro [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://hdl.handle.net/11449/226530
Resumo: Copper nitroprusside was formed on aminopropylsilica silica gel (3-AS) surface (SiCuNP) previously prepared following two steps. These materials were thoroughly characterized by Infrared (FTIR) and cyclic voltammetry. The above techniques confirmed the successful formation of the copper nitroprusside on the silica surface. The cyclic voltammogram of CuNPSD were found to exhibit two redox couples with (Eθ,)1 = 0.34 V; (Eθ,)2 = 0.76 V vs. Ag/AgCl, KCl(sat) (KCl = 1.0 mol L-1; v = 20 mV s-1) attributed to the redox processes Cu(I)/Cu(II) and Fe(II)(CN)5NO/Fe(III)(CN)5NO respectively. The second redox process ((Eθ,)2 presented by the graphite paste electrode with SiCuNP shows electrocatalytic activity for the oxidation of N-acetylcysteine. The linear range for the determination of N-acetylcysteine was found between 9.9 × 10-5 and 8.9 × 10-4 mol L-1 showing a detection limit of 4.18 × 10-5 mol L-1 and an amperometric sensitivity of 3.02 × 10-2 A / mol-1 L. © 2011 by ESG.
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spelling Determination of N-acetylcysteine by cyclic voltammetry using modified carbon paste electrode with copper nitroprusside adsorbed on the 3-aminopropylsilica3-aminopropylsilica copperCarbon paste electrodeN-aceltylcysteineNitroprussideSpectroscopy cyclic voltammetryCopper nitroprusside was formed on aminopropylsilica silica gel (3-AS) surface (SiCuNP) previously prepared following two steps. These materials were thoroughly characterized by Infrared (FTIR) and cyclic voltammetry. The above techniques confirmed the successful formation of the copper nitroprusside on the silica surface. The cyclic voltammogram of CuNPSD were found to exhibit two redox couples with (Eθ,)1 = 0.34 V; (Eθ,)2 = 0.76 V vs. Ag/AgCl, KCl(sat) (KCl = 1.0 mol L-1; v = 20 mV s-1) attributed to the redox processes Cu(I)/Cu(II) and Fe(II)(CN)5NO/Fe(III)(CN)5NO respectively. The second redox process ((Eθ,)2 presented by the graphite paste electrode with SiCuNP shows electrocatalytic activity for the oxidation of N-acetylcysteine. The linear range for the determination of N-acetylcysteine was found between 9.9 × 10-5 and 8.9 × 10-4 mol L-1 showing a detection limit of 4.18 × 10-5 mol L-1 and an amperometric sensitivity of 3.02 × 10-2 A / mol-1 L. © 2011 by ESG.Faculdade de Engenharia de Ilha Solteira UNESP - Univ Estadual Paulista Departamento de Física e Química, Av. Brasil Centro, 56, CEP 15385-000, Ilha Solteira, SPInstituto de Química de Araraquara UNESP - Univ Estadual Paulista, Rua Francisco Degni s/n, CEP 14801-970, Araraquara, SPFaculdade de Engenharia de Ilha Solteira UNESP - Univ Estadual Paulista Departamento de Física e Química, Av. Brasil Centro, 56, CEP 15385-000, Ilha Solteira, SPInstituto de Química de Araraquara UNESP - Univ Estadual Paulista, Rua Francisco Degni s/n, CEP 14801-970, Araraquara, SPUniversidade Estadual Paulista (UNESP)de Sá, Acelino Cardoso [UNESP]Paim, Leonardo L. [UNESP]Bicalho, Urquisa de Oliveira [UNESP]do Carmo, Devaney Ribeiro [UNESP]2022-04-29T00:50:31Z2022-04-29T00:50:31Z2011-09-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article3754-3767International Journal of Electrochemical Science, v. 6, n. 9, p. 3754-3767, 2011.1452-3981http://hdl.handle.net/11449/2265302-s2.0-80052924662Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengInternational Journal of Electrochemical Scienceinfo:eu-repo/semantics/openAccess2024-07-10T14:08:08Zoai:repositorio.unesp.br:11449/226530Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T22:39:12.580363Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Determination of N-acetylcysteine by cyclic voltammetry using modified carbon paste electrode with copper nitroprusside adsorbed on the 3-aminopropylsilica
title Determination of N-acetylcysteine by cyclic voltammetry using modified carbon paste electrode with copper nitroprusside adsorbed on the 3-aminopropylsilica
spellingShingle Determination of N-acetylcysteine by cyclic voltammetry using modified carbon paste electrode with copper nitroprusside adsorbed on the 3-aminopropylsilica
de Sá, Acelino Cardoso [UNESP]
3-aminopropylsilica copper
Carbon paste electrode
N-aceltylcysteine
Nitroprusside
Spectroscopy cyclic voltammetry
title_short Determination of N-acetylcysteine by cyclic voltammetry using modified carbon paste electrode with copper nitroprusside adsorbed on the 3-aminopropylsilica
title_full Determination of N-acetylcysteine by cyclic voltammetry using modified carbon paste electrode with copper nitroprusside adsorbed on the 3-aminopropylsilica
title_fullStr Determination of N-acetylcysteine by cyclic voltammetry using modified carbon paste electrode with copper nitroprusside adsorbed on the 3-aminopropylsilica
title_full_unstemmed Determination of N-acetylcysteine by cyclic voltammetry using modified carbon paste electrode with copper nitroprusside adsorbed on the 3-aminopropylsilica
title_sort Determination of N-acetylcysteine by cyclic voltammetry using modified carbon paste electrode with copper nitroprusside adsorbed on the 3-aminopropylsilica
author de Sá, Acelino Cardoso [UNESP]
author_facet de Sá, Acelino Cardoso [UNESP]
Paim, Leonardo L. [UNESP]
Bicalho, Urquisa de Oliveira [UNESP]
do Carmo, Devaney Ribeiro [UNESP]
author_role author
author2 Paim, Leonardo L. [UNESP]
Bicalho, Urquisa de Oliveira [UNESP]
do Carmo, Devaney Ribeiro [UNESP]
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (UNESP)
dc.contributor.author.fl_str_mv de Sá, Acelino Cardoso [UNESP]
Paim, Leonardo L. [UNESP]
Bicalho, Urquisa de Oliveira [UNESP]
do Carmo, Devaney Ribeiro [UNESP]
dc.subject.por.fl_str_mv 3-aminopropylsilica copper
Carbon paste electrode
N-aceltylcysteine
Nitroprusside
Spectroscopy cyclic voltammetry
topic 3-aminopropylsilica copper
Carbon paste electrode
N-aceltylcysteine
Nitroprusside
Spectroscopy cyclic voltammetry
description Copper nitroprusside was formed on aminopropylsilica silica gel (3-AS) surface (SiCuNP) previously prepared following two steps. These materials were thoroughly characterized by Infrared (FTIR) and cyclic voltammetry. The above techniques confirmed the successful formation of the copper nitroprusside on the silica surface. The cyclic voltammogram of CuNPSD were found to exhibit two redox couples with (Eθ,)1 = 0.34 V; (Eθ,)2 = 0.76 V vs. Ag/AgCl, KCl(sat) (KCl = 1.0 mol L-1; v = 20 mV s-1) attributed to the redox processes Cu(I)/Cu(II) and Fe(II)(CN)5NO/Fe(III)(CN)5NO respectively. The second redox process ((Eθ,)2 presented by the graphite paste electrode with SiCuNP shows electrocatalytic activity for the oxidation of N-acetylcysteine. The linear range for the determination of N-acetylcysteine was found between 9.9 × 10-5 and 8.9 × 10-4 mol L-1 showing a detection limit of 4.18 × 10-5 mol L-1 and an amperometric sensitivity of 3.02 × 10-2 A / mol-1 L. © 2011 by ESG.
publishDate 2011
dc.date.none.fl_str_mv 2011-09-01
2022-04-29T00:50:31Z
2022-04-29T00:50:31Z
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 International Journal of Electrochemical Science, v. 6, n. 9, p. 3754-3767, 2011.
1452-3981
http://hdl.handle.net/11449/226530
2-s2.0-80052924662
identifier_str_mv International Journal of Electrochemical Science, v. 6, n. 9, p. 3754-3767, 2011.
1452-3981
2-s2.0-80052924662
url http://hdl.handle.net/11449/226530
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv International Journal of Electrochemical Science
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 3754-3767
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
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