Manganese Phthalocyanine as a Biomimetic Electrocatalyst for Phenols in the Development of an Amperometric Sensor

Detalhes bibliográficos
Autor(a) principal: Santos, Wilney de Jesus R.
Data de Publicação: 2009
Outros Autores: Sousa, Aline L., Sotomayor, Maria Del Pilar Taboada [UNESP], Damos, Flavio S., Tanaka, Sonia Maria C. N., Kubota, Lauro T., Tanaka, Auro A.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1590/S0103-50532009000600025
http://hdl.handle.net/11449/40268
Resumo: The construction of an amperometric sensor for phenolic compounds using a carbon paste electrode modified with manganese phthalocyanine and histidine is reported. Under optimized conditions, at 0 mV vs Ag/AgCl in 0.1 mol dm(-3) phosphate buffer solutions (pH 7.0) containing 250 mu mol dm(-3) H2O2, a linear response for catechol from 20 up to 130 mu mol dm(-3) was obtained with a sensitivity of 0.56 (+/- 0.02) mu A dm(3) mu mol(-1) cm(-2). The detection limit was 1.1 mu mol dm(-3) and the response time was 2 s. The sensor presented stable response during 40 successive determinations. The repeatability, evaluated in terms of relative standard deviation, was 3.6% for n = 5 and [catechol] = 10 mu mol dm(-3). The sensor responses for other phenolic compounds were also investigated in details. Finally, the applicability of the sensor was tested in a pharmaceutical containing dopamine and the results compared favorably with those obtained with the official method.
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spelling Manganese Phthalocyanine as a Biomimetic Electrocatalyst for Phenols in the Development of an Amperometric Sensormanganese phthalocyaninephenolic compoundamperometric sensorThe construction of an amperometric sensor for phenolic compounds using a carbon paste electrode modified with manganese phthalocyanine and histidine is reported. Under optimized conditions, at 0 mV vs Ag/AgCl in 0.1 mol dm(-3) phosphate buffer solutions (pH 7.0) containing 250 mu mol dm(-3) H2O2, a linear response for catechol from 20 up to 130 mu mol dm(-3) was obtained with a sensitivity of 0.56 (+/- 0.02) mu A dm(3) mu mol(-1) cm(-2). The detection limit was 1.1 mu mol dm(-3) and the response time was 2 s. The sensor presented stable response during 40 successive determinations. The repeatability, evaluated in terms of relative standard deviation, was 3.6% for n = 5 and [catechol] = 10 mu mol dm(-3). The sensor responses for other phenolic compounds were also investigated in details. Finally, the applicability of the sensor was tested in a pharmaceutical containing dopamine and the results compared favorably with those obtained with the official method.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Universidade Federal do Maranhão (UFMA), Dept Quim, BR-65085580 Sao Luis, MA, BrazilUniv Estadual Paulista, Inst Quim, BR-14081970 Araraquara, SP, BrazilUniv Fed Vales Jequitinhonha & Mucuri, Dept Quim, BR-39100000 Diamantina, MG, BrazilUniv Estadual Campinas, Inst Quim, BR-13084971 Campinas, SP, BrazilInst Nacl Ciência & Tecnol Bioanalit, BR-13083970 Campinas, SP, BrazilUniv Estadual Paulista, Inst Quim, BR-14081970 Araraquara, SP, BrazilSoc Brasileira QuimicaUniversidade Federal do Maranhão (UFMA)Universidade Estadual Paulista (Unesp)Univ Fed Vales Jequitinhonha & MucuriUniversidade Estadual de Campinas (UNICAMP)Inst Nacl Ciência & Tecnol BioanalitSantos, Wilney de Jesus R.Sousa, Aline L.Sotomayor, Maria Del Pilar Taboada [UNESP]Damos, Flavio S.Tanaka, Sonia Maria C. N.Kubota, Lauro T.Tanaka, Auro A.2014-05-20T15:31:00Z2014-05-20T15:31:00Z2009-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1180-1187http://dx.doi.org/10.1590/S0103-50532009000600025Journal of The Brazilian Chemical Society. São Paulo: Soc Brasileira Quimica, v. 20, n. 6, p. 1180-1187, 2009.0103-5053http://hdl.handle.net/11449/4026810.1590/S0103-50532009000600025S0103-50532009000600025WOS:000268336800025S0103-50532009000600025.pdf2933194342093387Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of the Brazilian Chemical Society1.4440,357info:eu-repo/semantics/openAccess2021-10-23T16:58:03Zoai:repositorio.unesp.br:11449/40268Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:49:13.701343Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Manganese Phthalocyanine as a Biomimetic Electrocatalyst for Phenols in the Development of an Amperometric Sensor
title Manganese Phthalocyanine as a Biomimetic Electrocatalyst for Phenols in the Development of an Amperometric Sensor
spellingShingle Manganese Phthalocyanine as a Biomimetic Electrocatalyst for Phenols in the Development of an Amperometric Sensor
Santos, Wilney de Jesus R.
manganese phthalocyanine
phenolic compound
amperometric sensor
title_short Manganese Phthalocyanine as a Biomimetic Electrocatalyst for Phenols in the Development of an Amperometric Sensor
title_full Manganese Phthalocyanine as a Biomimetic Electrocatalyst for Phenols in the Development of an Amperometric Sensor
title_fullStr Manganese Phthalocyanine as a Biomimetic Electrocatalyst for Phenols in the Development of an Amperometric Sensor
title_full_unstemmed Manganese Phthalocyanine as a Biomimetic Electrocatalyst for Phenols in the Development of an Amperometric Sensor
title_sort Manganese Phthalocyanine as a Biomimetic Electrocatalyst for Phenols in the Development of an Amperometric Sensor
author Santos, Wilney de Jesus R.
author_facet Santos, Wilney de Jesus R.
Sousa, Aline L.
Sotomayor, Maria Del Pilar Taboada [UNESP]
Damos, Flavio S.
Tanaka, Sonia Maria C. N.
Kubota, Lauro T.
Tanaka, Auro A.
author_role author
author2 Sousa, Aline L.
Sotomayor, Maria Del Pilar Taboada [UNESP]
Damos, Flavio S.
Tanaka, Sonia Maria C. N.
Kubota, Lauro T.
Tanaka, Auro A.
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Federal do Maranhão (UFMA)
Universidade Estadual Paulista (Unesp)
Univ Fed Vales Jequitinhonha & Mucuri
Universidade Estadual de Campinas (UNICAMP)
Inst Nacl Ciência & Tecnol Bioanalit
dc.contributor.author.fl_str_mv Santos, Wilney de Jesus R.
Sousa, Aline L.
Sotomayor, Maria Del Pilar Taboada [UNESP]
Damos, Flavio S.
Tanaka, Sonia Maria C. N.
Kubota, Lauro T.
Tanaka, Auro A.
dc.subject.por.fl_str_mv manganese phthalocyanine
phenolic compound
amperometric sensor
topic manganese phthalocyanine
phenolic compound
amperometric sensor
description The construction of an amperometric sensor for phenolic compounds using a carbon paste electrode modified with manganese phthalocyanine and histidine is reported. Under optimized conditions, at 0 mV vs Ag/AgCl in 0.1 mol dm(-3) phosphate buffer solutions (pH 7.0) containing 250 mu mol dm(-3) H2O2, a linear response for catechol from 20 up to 130 mu mol dm(-3) was obtained with a sensitivity of 0.56 (+/- 0.02) mu A dm(3) mu mol(-1) cm(-2). The detection limit was 1.1 mu mol dm(-3) and the response time was 2 s. The sensor presented stable response during 40 successive determinations. The repeatability, evaluated in terms of relative standard deviation, was 3.6% for n = 5 and [catechol] = 10 mu mol dm(-3). The sensor responses for other phenolic compounds were also investigated in details. Finally, the applicability of the sensor was tested in a pharmaceutical containing dopamine and the results compared favorably with those obtained with the official method.
publishDate 2009
dc.date.none.fl_str_mv 2009-01-01
2014-05-20T15:31:00Z
2014-05-20T15:31:00Z
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/10.1590/S0103-50532009000600025
Journal of The Brazilian Chemical Society. São Paulo: Soc Brasileira Quimica, v. 20, n. 6, p. 1180-1187, 2009.
0103-5053
http://hdl.handle.net/11449/40268
10.1590/S0103-50532009000600025
S0103-50532009000600025
WOS:000268336800025
S0103-50532009000600025.pdf
2933194342093387
url http://dx.doi.org/10.1590/S0103-50532009000600025
http://hdl.handle.net/11449/40268
identifier_str_mv Journal of The Brazilian Chemical Society. São Paulo: Soc Brasileira Quimica, v. 20, n. 6, p. 1180-1187, 2009.
0103-5053
10.1590/S0103-50532009000600025
S0103-50532009000600025
WOS:000268336800025
S0103-50532009000600025.pdf
2933194342093387
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Journal of the Brazilian Chemical Society
1.444
0,357
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 1180-1187
dc.publisher.none.fl_str_mv Soc Brasileira Quimica
publisher.none.fl_str_mv Soc Brasileira Quimica
dc.source.none.fl_str_mv Web of Science
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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