SPECTROELECTROCHEMICAL STUDY OF BILIRUBIN IN DIMETHYL FORMAMIDE

被引:5
作者
DONG, SJ
YANG, Y
CHENG, CJ
机构
[1] Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun
来源
JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1992年 / 324卷 / 1-2期
关键词
D O I
10.1016/0022-0728(92)80047-8
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
The electrochemical reduction of bilirubin (BR) in dimethyl formamide (DMF) is discussed in detail. The kinetic study of the electroreduction process of BR results in values of 7.94 x 10(-6) cm2/s for the diffusion coefficient and about 10(-3) cm/s for the standard heterogeneous electrode reaction rate constant. Thin-layer spectroelectrochemical investigations of BR exhibit a blue shift and a red shift at E(pc) = -0.6 V and E(pc) = -0.85 V respectively. They also give values of E0' = -1.55 V and n = 1 for the reduction process, and E0' = -1.35 V and n = 1 for the oxidation process. It was found experimentally that as the potential changes from negative to positive, the sequential color changes are similar to those of some of the color components in visible light. A mechanism for BR electroreduction in DMF has been proposed.
引用
收藏
页码:219 / 228
页数:10
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