Electrochemical behavior of quercetin on boron-doped diamond electrode in different supporting electrolytes

Đurović Ana and Stojanović Zorica and Kravić Snežana and Suturović Zvonimir and Richtera Lukas and Brezo-Borjan Tanja: Electrochemical behavior of quercetin on boron-doped diamond electrode in different supporting electrolytes.

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Abstract

Quercetin is one of the most abundant flavonoid compounds with a broad spectrum of health beneficial properties. In this study electrochemical behavior of quercetin on boron-doped diamond electrode as a working electrode was investigated in different supporting electrolytes. Experiments embraced 0.1 mol/L acetate buffer, citrate buffer, phosphate buffer, 0.04 mol/L Britton-Robinson buffer and 0.05 mol/L solution of HCl, while studied quercetin concentration were in the range from 2 mg/L to 30 mg/L. Voltammograms recorded in different supporting electrolytes revealed one sharp and well-defined oxidation peak of quercetin at the potential of about +0.70 V, and it was chosen for quantification of quercetin, although in some buffers one additional protracted peak was observed. In comparison to differential pulse voltammetry, square-wave voltammetry showed higher sensitivity, so this technique could be more suitable for further development. Even though high values of correlation coefficients (> 0.9900) were obtained for all studied supporting electrolytes, the best results in terms of sensitivity were observed for citrate and Britton-Robinson buffers. These preliminary results demonstrated that boron-doped diamond electrode can be used as a sensitive sensor for precise determination of quercetin in real samples.

Item Type: Conference or Workshop Item
Journal or Publication Title: Proceedings of the International Symposium on Analytical and Environmental Problems
Date: 2019
ISBN: 978-963-306-702-4
Page Range: pp. 124-127
Event Title: International Symposium on Analytical and Environmental Problems (25.) (2019) (Szeged)
Related URLs: http://acta.bibl.u-szeged.hu/64947/
Uncontrolled Keywords: Elektrokémia, Elektrolitok
Additional Information: Bibliogr.: 127. p. ; összefoglalás angol nyelven
Date Deposited: 2020. Mar. 18. 13:00
Last Modified: 2022. Aug. 08. 15:37
URI: http://acta.bibl.u-szeged.hu/id/eprint/64800

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