A Graphite-Polyurethane Composite Electrode for the Analysis of Furosemide
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10316/8249 https://doi.org/10.1002/elan.200804329 |
Resumo: | A graphite-polyurethane composite electrode has been used for the determination of furosemide, a antihypertensive drug, in pharmaceutical samples by anodic oxidation. Cyclic voltammetry and electrochemical impedance spectroscopy were used to characterize the electrooxidation process at +1.0 V vs. SCE over a wide pH range, with the result that no adsorption of analyte or products occurs, unlike at other carbon-based electrode materials. Quantification was carried out using cyclic voltammetry, differential pulse voltammetry, and square-wave voltammetry. Linear ranges were determined (up to 21 mumol L-1 with cyclic voltammetry) as well as limits of detection (0.15 mumol L-1 by differential pulse voltammetry). Four different types of commercial samples were successfully analyzed. Recovery tests were performed which agreed with those obtained by spectrophotometric evaluation. The advantages of this electrode material for repetitive analyzes, due to the fact that no electrode surface renewal is needed owing to the lack of adsorption, are highlighted. |
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A Graphite-Polyurethane Composite Electrode for the Analysis of FurosemideA graphite-polyurethane composite electrode has been used for the determination of furosemide, a antihypertensive drug, in pharmaceutical samples by anodic oxidation. Cyclic voltammetry and electrochemical impedance spectroscopy were used to characterize the electrooxidation process at +1.0 V vs. SCE over a wide pH range, with the result that no adsorption of analyte or products occurs, unlike at other carbon-based electrode materials. Quantification was carried out using cyclic voltammetry, differential pulse voltammetry, and square-wave voltammetry. Linear ranges were determined (up to 21 mumol L-1 with cyclic voltammetry) as well as limits of detection (0.15 mumol L-1 by differential pulse voltammetry). Four different types of commercial samples were successfully analyzed. Recovery tests were performed which agreed with those obtained by spectrophotometric evaluation. The advantages of this electrode material for repetitive analyzes, due to the fact that no electrode surface renewal is needed owing to the lack of adsorption, are highlighted.2008info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/8249http://hdl.handle.net/10316/8249https://doi.org/10.1002/elan.200804329engElectroanalysis. 20:21 (2008) 2287-2293Semaan, Felipe S.Pinto, Edilson M.Cavalheiro, Éder T. G.Brett, Christopher M. A.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2021-10-12T11:21:32Zoai:estudogeral.uc.pt:10316/8249Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:01:40.305677Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
A Graphite-Polyurethane Composite Electrode for the Analysis of Furosemide |
title |
A Graphite-Polyurethane Composite Electrode for the Analysis of Furosemide |
spellingShingle |
A Graphite-Polyurethane Composite Electrode for the Analysis of Furosemide Semaan, Felipe S. |
title_short |
A Graphite-Polyurethane Composite Electrode for the Analysis of Furosemide |
title_full |
A Graphite-Polyurethane Composite Electrode for the Analysis of Furosemide |
title_fullStr |
A Graphite-Polyurethane Composite Electrode for the Analysis of Furosemide |
title_full_unstemmed |
A Graphite-Polyurethane Composite Electrode for the Analysis of Furosemide |
title_sort |
A Graphite-Polyurethane Composite Electrode for the Analysis of Furosemide |
author |
Semaan, Felipe S. |
author_facet |
Semaan, Felipe S. Pinto, Edilson M. Cavalheiro, Éder T. G. Brett, Christopher M. A. |
author_role |
author |
author2 |
Pinto, Edilson M. Cavalheiro, Éder T. G. Brett, Christopher M. A. |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Semaan, Felipe S. Pinto, Edilson M. Cavalheiro, Éder T. G. Brett, Christopher M. A. |
description |
A graphite-polyurethane composite electrode has been used for the determination of furosemide, a antihypertensive drug, in pharmaceutical samples by anodic oxidation. Cyclic voltammetry and electrochemical impedance spectroscopy were used to characterize the electrooxidation process at +1.0 V vs. SCE over a wide pH range, with the result that no adsorption of analyte or products occurs, unlike at other carbon-based electrode materials. Quantification was carried out using cyclic voltammetry, differential pulse voltammetry, and square-wave voltammetry. Linear ranges were determined (up to 21 mumol L-1 with cyclic voltammetry) as well as limits of detection (0.15 mumol L-1 by differential pulse voltammetry). Four different types of commercial samples were successfully analyzed. Recovery tests were performed which agreed with those obtained by spectrophotometric evaluation. The advantages of this electrode material for repetitive analyzes, due to the fact that no electrode surface renewal is needed owing to the lack of adsorption, are highlighted. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008 |
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://hdl.handle.net/10316/8249 http://hdl.handle.net/10316/8249 https://doi.org/10.1002/elan.200804329 |
url |
http://hdl.handle.net/10316/8249 https://doi.org/10.1002/elan.200804329 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Electroanalysis. 20:21 (2008) 2287-2293 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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