Construction and Metrological Characterization of a Minimal Instrumentation Micropolarograph
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042016000500002 |
Resumo: | A minimal instrumentation micropolarograph was built, and its metrological characterization was performed. The oxidation of K4[Fe(CN)6] was studied by linear voltammetry. A microdisc and a bar of carbon were used as working and auxiliary electrodes, respectively. A bar divided into compartments of copper-internal solution- cotton was used as reference. The linear coefficient of determination between the limiting current and the concentration was 0.9926, in the range of 10-2 - 10-1 mol L-1 . The coefficient of variation of ten voltammograms at 0.08 mol L-1 was 1.8 %, being inferior to the maximum value reported for these methods. Mood and Kruskal-Wallis tests did not show significant differences between voltammograms. In the range of linear correlation coefficients of potential sweep 0.9488 to 0.9989, no sweep influence on voltammograms was observed. The expanded uncertainty associated with the determination of the limiting current was 1.9 μA. The linear voltammograms for oxidation of ascorbic acid and KI were obtained, showing correspondence with the reported results. |
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Construction and Metrological Characterization of a Minimal Instrumentation MicropolarographMinimal Instrumentation Micropolarographlinear voltammetrymetrologyA minimal instrumentation micropolarograph was built, and its metrological characterization was performed. The oxidation of K4[Fe(CN)6] was studied by linear voltammetry. A microdisc and a bar of carbon were used as working and auxiliary electrodes, respectively. A bar divided into compartments of copper-internal solution- cotton was used as reference. The linear coefficient of determination between the limiting current and the concentration was 0.9926, in the range of 10-2 - 10-1 mol L-1 . The coefficient of variation of ten voltammograms at 0.08 mol L-1 was 1.8 %, being inferior to the maximum value reported for these methods. Mood and Kruskal-Wallis tests did not show significant differences between voltammograms. In the range of linear correlation coefficients of potential sweep 0.9488 to 0.9989, no sweep influence on voltammograms was observed. The expanded uncertainty associated with the determination of the limiting current was 1.9 μA. The linear voltammograms for oxidation of ascorbic acid and KI were obtained, showing correspondence with the reported results.Sociedade Portuguesa de Electroquímica2016-09-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articletext/htmlhttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042016000500002Portugaliae Electrochimica Acta v.34 n.5 2016reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAPenghttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042016000500002Vilaso,J. E.Arada,M. A.Baez,J. A.Cespedes,A.info:eu-repo/semantics/openAccess2024-02-06T17:07:22Zoai:scielo:S0872-19042016000500002Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:20:18.792231Repositório 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 |
Construction and Metrological Characterization of a Minimal Instrumentation Micropolarograph |
title |
Construction and Metrological Characterization of a Minimal Instrumentation Micropolarograph |
spellingShingle |
Construction and Metrological Characterization of a Minimal Instrumentation Micropolarograph Vilaso,J. E. Minimal Instrumentation Micropolarograph linear voltammetry metrology |
title_short |
Construction and Metrological Characterization of a Minimal Instrumentation Micropolarograph |
title_full |
Construction and Metrological Characterization of a Minimal Instrumentation Micropolarograph |
title_fullStr |
Construction and Metrological Characterization of a Minimal Instrumentation Micropolarograph |
title_full_unstemmed |
Construction and Metrological Characterization of a Minimal Instrumentation Micropolarograph |
title_sort |
Construction and Metrological Characterization of a Minimal Instrumentation Micropolarograph |
author |
Vilaso,J. E. |
author_facet |
Vilaso,J. E. Arada,M. A. Baez,J. A. Cespedes,A. |
author_role |
author |
author2 |
Arada,M. A. Baez,J. A. Cespedes,A. |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Vilaso,J. E. Arada,M. A. Baez,J. A. Cespedes,A. |
dc.subject.por.fl_str_mv |
Minimal Instrumentation Micropolarograph linear voltammetry metrology |
topic |
Minimal Instrumentation Micropolarograph linear voltammetry metrology |
description |
A minimal instrumentation micropolarograph was built, and its metrological characterization was performed. The oxidation of K4[Fe(CN)6] was studied by linear voltammetry. A microdisc and a bar of carbon were used as working and auxiliary electrodes, respectively. A bar divided into compartments of copper-internal solution- cotton was used as reference. The linear coefficient of determination between the limiting current and the concentration was 0.9926, in the range of 10-2 - 10-1 mol L-1 . The coefficient of variation of ten voltammograms at 0.08 mol L-1 was 1.8 %, being inferior to the maximum value reported for these methods. Mood and Kruskal-Wallis tests did not show significant differences between voltammograms. In the range of linear correlation coefficients of potential sweep 0.9488 to 0.9989, no sweep influence on voltammograms was observed. The expanded uncertainty associated with the determination of the limiting current was 1.9 μA. The linear voltammograms for oxidation of ascorbic acid and KI were obtained, showing correspondence with the reported results. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-09-01 |
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://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042016000500002 |
url |
http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042016000500002 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042016000500002 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Portuguesa de Electroquímica |
publisher.none.fl_str_mv |
Sociedade Portuguesa de Electroquímica |
dc.source.none.fl_str_mv |
Portugaliae Electrochimica Acta v.34 n.5 2016 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) |
collection |
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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1799137291489247232 |