Determination of N-acetylcysteine by cyclic voltammetry using modified carbon paste electrode with copper nitroprusside adsorbed on the 3-aminopropylsilica
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Outros Autores: | , , |
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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Repositório Institucional da UNESP |
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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 |
|
_version_ |
1808129447270809600 |