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Direct Spectroelectrochemical Titration of Glutathione

Published

Author(s)

Vytautas Reipa

Abstract

Spectroelectrochemistry measurements are used to determine the formal potential E of glutathione. Nernst titration was performed by monitoring disulfide absorption at 258 nm in a thin layer cell. Use of nanocrystalline highly doped tin oxide electrodes allowed the repeated direct glutathione reduction and oxidation. At pH = 7.35, T = 298K, GSSG range from 1 to 5 mM, and 1=0.1 mol/kg, the measured value of E = -22 + 0.02 V (NHE).
Citation
Chemical Communications
Volume
65

Keywords

formal poetntial redox reaction, glutathione, NADP, UV-VIS spectroscopy

Citation

Reipa, V. (2004), Direct Spectroelectrochemical Titration of Glutathione, Chemical Communications (Accessed April 23, 2024)
Created December 1, 2004, Updated February 17, 2017