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Updated: Jun 28, 2026

Using Cyclic Voltammetry, UV-Vis-NIR, and EPR Spectroelectrochemistry to Analyze Organic Compounds
Published on: October 18, 2018
Voltammetric behavior of methaqualone and its determination by single-sweep oscillopolarography
Lijuan Zhang1, Shaofeng Zhang, Youzhi Wan
1Department of Applied Chemistry, Faculty of Science, Beijing University of Chemical Technology, Beijing, People's Republic of China. dazlj@mail.buct.edu.cn
Abstract:
A well derivative reduction wave of methaqualone (MTQ) was obtained in 0.033 mol dm(-3) B-R (pH 3.76) buffer solution by single-sweep oscillopolarography. The peak potential is -1.36 V (vs. saturated calomel reference electrode, SCE). The peak current is proportional to the concentration of methaqualone over the range of 7.0 x 10(-8)-9.0 x 10(-6) mol dm(-3). The method has been successfully applied to the determination of methaqualone in tablets. The wave is believed to result from irreversible adsorption through studies of its electrochemical behavior and reaction mechanism.
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