Abstract
In this study, we introduce an innovative approach to electroanalysis that combines solvent extraction and chronocoulometry for the quantification of furosemide, a loop diuretic medication. The objective of this report is to provide students with a practical learning experience in the field of electroanalysis, enabling them to explore recent developments both theoretically and in the laboratory. The experimental procedure involves the extraction of furosemide from a pharmaceutical tablet using methanol, followed by the deposition of the extracted compound onto an electrode. Chronocoulometry is then employed to determine the quantity of furosemide. A 95% recovery rate and a close to 99% fit between theoretical and experimental substance amounts demonstrate the applicability of the method. This approach offers several didactic benefits for students: (i) It teaches the theory and application of chronocoulometry. (ii) It emphasizes the advantage of chronocoulometry as a calibration-free technique. (iii) It introduces students to the principles of electrochemical stripping techniques. (iv) It demonstrates that solid particles can be effectively studied using electroanalysis. Finally, (v) it provides a real-world application of electroanalysis in quantifying an organic compound.
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08 January 2024
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The authors are grateful to FONDECYT (Grant 1160167).
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Gulppi, M., Irrazabal, J.P., Azócar, M.I. et al. The combination of extraction and chronocoulometry of a solid precipitate for teaching a novel approach of electroanalysis. J Solid State Electrochem 28, 677–682 (2024). https://doi.org/10.1007/s10008-023-05764-8
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DOI: https://doi.org/10.1007/s10008-023-05764-8