Effect of supporting electrolytes on voltammetry with manual staircase voltage scan
The minimal instrumentation voltammetry with manual staircase voltage scan allows to obtain electrochemical results with non-commercial equipment. Several researches have demonstrated its analytical and metrological validity; however, some variables have not been studied in this kind of methods, su...
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| Format: | Article |
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Universidade Federal de Viçosa (UFV)
2022-05-01
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| Series: | The Journal of Engineering and Exact Sciences |
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| Online Access: | https://periodicos.ufv.br/jcec/article/view/14235 |
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| author | Jorge Arce-Castro Javier E. Vilasó-Cadre Daniel Benítez-Fernández Héctor Rodríguez-de la Rosa María A. Arada-Pérez |
| author_facet | Jorge Arce-Castro Javier E. Vilasó-Cadre Daniel Benítez-Fernández Héctor Rodríguez-de la Rosa María A. Arada-Pérez |
| author_sort | Jorge Arce-Castro |
| collection | DOAJ |
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The minimal instrumentation voltammetry with manual staircase voltage scan allows to obtain electrochemical results with non-commercial equipment. Several researches have demonstrated its analytical and metrological validity; however, some variables have not been studied in this kind of methods, such as the effect of the supporting electrolyte on the repeatability of the voltammograms. In this paper, a study is presented about the effect of KNO3, KCl, KClO4, K2SO4 and Na2SO3 as supporting electrolytes on the voltammograms obtained for the oxidation of KI and succinic acid, both at 0,1 mol/L; ascorbic acid 0,01 mol/L and potassium hexacyanoferrate (II) 0,08 mol/L, all of them as an analytical model. A graphite microdisc was used as working electrode; a bar of the same material was used as the auxiliary electrode. A silver electrode was used as the reference electrode. The Analysis of Variance was the statistical tool for the comparison of the voltammetric currents. A Multiple Range Contrast by a Fisher's LSD Test was used to identify the groups with statistical differences. There were statistical differences between the currents obtained with different supporting electrolytes for all the electroactive species studied. The best voltammetric results were obtained using KCl and KNO3 as supporting electrolytes.
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| format | Article |
| id | doaj-art-4504dab50781435ebe798c19277857fd |
| institution | Kabale University |
| issn | 2527-1075 |
| language | English |
| publishDate | 2022-05-01 |
| publisher | Universidade Federal de Viçosa (UFV) |
| record_format | Article |
| series | The Journal of Engineering and Exact Sciences |
| spelling | doaj-art-4504dab50781435ebe798c19277857fd2025-02-02T19:56:26ZengUniversidade Federal de Viçosa (UFV)The Journal of Engineering and Exact Sciences2527-10752022-05-018310.18540/jcecvl8iss3pp14235-01eEffect of supporting electrolytes on voltammetry with manual staircase voltage scanJorge Arce-Castro0Javier E. Vilasó-Cadre1Daniel Benítez-Fernández2Héctor Rodríguez-de la Rosa3María A. Arada-Pérez4Universidad de Oriente, CubaUniversidad Autónoma de San Luis Potosí, México.Universidad de Oriente, CubaHospital Lomas de San Luis International Hospital, MéxicoUniversidad de Oriente, Cuba The minimal instrumentation voltammetry with manual staircase voltage scan allows to obtain electrochemical results with non-commercial equipment. Several researches have demonstrated its analytical and metrological validity; however, some variables have not been studied in this kind of methods, such as the effect of the supporting electrolyte on the repeatability of the voltammograms. In this paper, a study is presented about the effect of KNO3, KCl, KClO4, K2SO4 and Na2SO3 as supporting electrolytes on the voltammograms obtained for the oxidation of KI and succinic acid, both at 0,1 mol/L; ascorbic acid 0,01 mol/L and potassium hexacyanoferrate (II) 0,08 mol/L, all of them as an analytical model. A graphite microdisc was used as working electrode; a bar of the same material was used as the auxiliary electrode. A silver electrode was used as the reference electrode. The Analysis of Variance was the statistical tool for the comparison of the voltammetric currents. A Multiple Range Contrast by a Fisher's LSD Test was used to identify the groups with statistical differences. There were statistical differences between the currents obtained with different supporting electrolytes for all the electroactive species studied. The best voltammetric results were obtained using KCl and KNO3 as supporting electrolytes. https://periodicos.ufv.br/jcec/article/view/14235Supporting electrolyteVoltammetryGraphiteNon-commercial instrumentation |
| spellingShingle | Jorge Arce-Castro Javier E. Vilasó-Cadre Daniel Benítez-Fernández Héctor Rodríguez-de la Rosa María A. Arada-Pérez Effect of supporting electrolytes on voltammetry with manual staircase voltage scan The Journal of Engineering and Exact Sciences Supporting electrolyte Voltammetry Graphite Non-commercial instrumentation |
| title | Effect of supporting electrolytes on voltammetry with manual staircase voltage scan |
| title_full | Effect of supporting electrolytes on voltammetry with manual staircase voltage scan |
| title_fullStr | Effect of supporting electrolytes on voltammetry with manual staircase voltage scan |
| title_full_unstemmed | Effect of supporting electrolytes on voltammetry with manual staircase voltage scan |
| title_short | Effect of supporting electrolytes on voltammetry with manual staircase voltage scan |
| title_sort | effect of supporting electrolytes on voltammetry with manual staircase voltage scan |
| topic | Supporting electrolyte Voltammetry Graphite Non-commercial instrumentation |
| url | https://periodicos.ufv.br/jcec/article/view/14235 |
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