Voltammetric determination of total iron in fuel ethanol using a 1,10 fenantroline/nafion carbon paste-modified electrode

This work presents a methodology for iron determination in fuel ethanol using a modified carbon paste electrode with 1.10 fenantroline/nafion. The electrochemical parameters were optimized for the proposed system and the voltammetric technique of square wave was employed for iron determination. An a...

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Detalhes bibliográficos
Autores: Mattos, Cleiton dos Santos [UNESP], do Carmo, Devaney Ribeiro [UNESP], de Oliveira, Marcelo Firmino, Stradiotto, Nelson Ramos [UNESP]
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2008
País:Brasil
Recursos:Universidade Estadual Paulista (UNESP)
Repositorio:Repositório Institucional da UNESP
Idioma:inglés
OAI Identifier:oai:repositorio.unesp.br:11449/225647
Acesso em linha:http://hdl.handle.net/11449/225647
Access Level:acceso abierto
Palavra-chave:1,10 fenantroline
Carbon paste electrode
Fuel ethanol
Iron
Square wave voltammetry
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spelling Voltammetric determination of total iron in fuel ethanol using a 1,10 fenantroline/nafion carbon paste-modified electrode1,10 fenantrolineCarbon paste electrodeFuel ethanolIronSquare wave voltammetryThis work presents a methodology for iron determination in fuel ethanol using a modified carbon paste electrode with 1.10 fenantroline/nafion. The electrochemical parameters were optimized for the proposed system and the voltammetric technique of square wave was employed for iron determination. An accumulation time of 5 minutes, such as a 100 mV of pulse magnitude (Esw) and frequency (f) of 25 Hz were used as optimized experimental conditions. The modified carbon paste electrode presented linear dependence of amperometric signal with iron concentration in a work range from 6.0x10-6 until 2.0x10-5 mol L-1 of iron, exhibiting a linear correlation coefficient of 0.9884, a detection limit of 2.4 x10-6 mol L-1 (n =3) and amperometric sensibility of 4.5x105 μA/mol L-1. Analytical curve method was used for iron determination at a commercial fuel sample. Flame atomic absorption spectroscopy was employed as comparative technique. © 2008 by ESG.UNESP Instituto de Química de Araraquara Departamento de Química Analítica, CP 355, 14801, 970 AraraquaraUNESP Faculdade de Engenharia de Ilha Solteira Departamento de Física e Química, CP 31, CEP 15385-000, Ilha SolteiraUSP-Faculdade de Filosofia Ciências e Letras de Ribeirão Preto Departamento de Química, 14040-901, Ribeirão PretoUNESP Instituto de Química de Araraquara Departamento de Química Analítica, CP 355, 14801, 970 AraraquaraUNESP Faculdade de Engenharia de Ilha Solteira Departamento de Física e Química, CP 31, CEP 15385-000, Ilha SolteiraUniversidade Estadual Paulista (UNESP)Universidade de São Paulo (USP)2022-04-28T20:56:57Z2022-04-28T20:56:57Z2008-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article338-345International Journal of Electrochemical Science, v. 3, n. 3, p. 338-345, 2008.1452-3981http://hdl.handle.net/11449/2256472-s2.0-70349935831Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengInternational Journal of Electrochemical Scienceinfo:eu-repo/semantics/openAccessMattos, Cleiton dos Santos [UNESP]do Carmo, Devaney Ribeiro [UNESP]de Oliveira, Marcelo FirminoStradiotto, Nelson Ramos [UNESP]2025-05-28T06:39:05Zoai:repositorio.unesp.br:11449/225647Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestrepositoriounesp@unesp.bropendoar:29462025-05-28T06:39:05Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Voltammetric determination of total iron in fuel ethanol using a 1,10 fenantroline/nafion carbon paste-modified electrode
title Voltammetric determination of total iron in fuel ethanol using a 1,10 fenantroline/nafion carbon paste-modified electrode
spellingShingle Voltammetric determination of total iron in fuel ethanol using a 1,10 fenantroline/nafion carbon paste-modified electrode
Mattos, Cleiton dos Santos [UNESP]
1,10 fenantroline
Carbon paste electrode
Fuel ethanol
Iron
Square wave voltammetry
title_short Voltammetric determination of total iron in fuel ethanol using a 1,10 fenantroline/nafion carbon paste-modified electrode
title_full Voltammetric determination of total iron in fuel ethanol using a 1,10 fenantroline/nafion carbon paste-modified electrode
title_fullStr Voltammetric determination of total iron in fuel ethanol using a 1,10 fenantroline/nafion carbon paste-modified electrode
title_full_unstemmed Voltammetric determination of total iron in fuel ethanol using a 1,10 fenantroline/nafion carbon paste-modified electrode
title_sort Voltammetric determination of total iron in fuel ethanol using a 1,10 fenantroline/nafion carbon paste-modified electrode
dc.creator.none.fl_str_mv Mattos, Cleiton dos Santos [UNESP]
do Carmo, Devaney Ribeiro [UNESP]
de Oliveira, Marcelo Firmino
Stradiotto, Nelson Ramos [UNESP]
author Mattos, Cleiton dos Santos [UNESP]
author_facet Mattos, Cleiton dos Santos [UNESP]
do Carmo, Devaney Ribeiro [UNESP]
de Oliveira, Marcelo Firmino
Stradiotto, Nelson Ramos [UNESP]
author_role author
author2 do Carmo, Devaney Ribeiro [UNESP]
de Oliveira, Marcelo Firmino
Stradiotto, Nelson Ramos [UNESP]
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (UNESP)
Universidade de São Paulo (USP)
dc.subject.por.fl_str_mv 1,10 fenantroline
Carbon paste electrode
Fuel ethanol
Iron
Square wave voltammetry
topic 1,10 fenantroline
Carbon paste electrode
Fuel ethanol
Iron
Square wave voltammetry
description This work presents a methodology for iron determination in fuel ethanol using a modified carbon paste electrode with 1.10 fenantroline/nafion. The electrochemical parameters were optimized for the proposed system and the voltammetric technique of square wave was employed for iron determination. An accumulation time of 5 minutes, such as a 100 mV of pulse magnitude (Esw) and frequency (f) of 25 Hz were used as optimized experimental conditions. The modified carbon paste electrode presented linear dependence of amperometric signal with iron concentration in a work range from 6.0x10-6 until 2.0x10-5 mol L-1 of iron, exhibiting a linear correlation coefficient of 0.9884, a detection limit of 2.4 x10-6 mol L-1 (n =3) and amperometric sensibility of 4.5x105 μA/mol L-1. Analytical curve method was used for iron determination at a commercial fuel sample. Flame atomic absorption spectroscopy was employed as comparative technique. © 2008 by ESG.
publishDate 2008
dc.date.none.fl_str_mv 2008-12-01
2022-04-28T20:56:57Z
2022-04-28T20:56:57Z
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. 3, n. 3, p. 338-345, 2008.
1452-3981
http://hdl.handle.net/11449/225647
2-s2.0-70349935831
identifier_str_mv International Journal of Electrochemical Science, v. 3, n. 3, p. 338-345, 2008.
1452-3981
2-s2.0-70349935831
url http://hdl.handle.net/11449/225647
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 338-345
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 repositoriounesp@unesp.br
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score 15.301629

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