An investigation of digoxin by cyclic voltammetry using gold and silver solid electrodes and chemometric analysis

Gonzalez-Rodriguez, Jose, Bellia, Gaetano, Corrall, Hannah , Baron, Mark and Croxton, Ruth (2017) An investigation of digoxin by cyclic voltammetry using gold and silver solid electrodes and chemometric analysis. International Journal of Electrochemical Science, 12 . pp. 3050-3062. ISSN 1452-3981

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Digoxin, one of the main cardiac glycosides medication, has shown to have a strong analytical response under investigation by voltammetric analysis using mercury electrodes, achieving nanomole sensitivity. In this study we investigated the suitability of solid electrodes as gold and silver electrodes in voltammetric analysis of this active pharmaceutical ingredient. The scope of the investigation was to evaluate if the use of these solid electrodes, more practical and especially less dangerous, under an operative and environmental aspects could represent a valid further possibility to add to the use of the mercury ones. Both of the solid electrodes have been tested at different pH of 5, 7.4, 10, and 11. PCA analysis has been performed and specific responses achieved. Micromole sensitivity has been achieved for both of the electrodes, showing that the use of these sensors could represent a preliminary analytical approach when the more accurate alternative choice is not necessary, being more practical and less environmental impacting than using mercury.

Keywords:digoxin, voltammetry, forensic science, electrochemistry, solid electrodes, multivariate analysis, Principal Component Analysis
Subjects:F Physical Sciences > F200 Materials Science
F Physical Sciences > F170 Physical Chemistry
F Physical Sciences > F150 Medicinal Chemistry
F Physical Sciences > F100 Chemistry
F Physical Sciences > F410 Forensic Science
F Physical Sciences > F180 Analytical Chemistry
Divisions:College of Science > School of Chemistry
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ID Code:27470
Deposited On:08 May 2017 15:38

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