期刊
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
卷 568, 期 1-2, 页码 93-99出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jelechem.2004.01.009
关键词
coupled chemical reaction; cyclic voltammetry; kinetic; furazolidone; chronoamperometry
The electrochemical behavior of the nitro radical anion, RNO2.-, of furazolidone has been investigated to study the tendency of RNO2.- to undergo further chemical reaction. The study was carried out in dimethylformamide (DMF) + water mixtures at different pH values on both mercury (Hg) and glassy carbon (GC) electrodes. The subsequent chemical reaction corresponds to a second order process; protonation of the electrogenerated RNO2.-. The procedure of Olmstead et al. [Anal. Chem. 41 (1969) 260] was employed to calculate the second order rate constant, k(2). The k(2) values are strongly pH-dependent. The interaction of RNO2.- with cysteine has been studied on a GC electrode, and the apparent rate constant, k(app), reported. (C) 2004 Elsevier B.V. All rights reserved.
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