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Circular Dichroism Spectroelectrochemical and Voltammetric Studies of Vitamin B 2
Author(s) -
Liu Xiaoqiang,
Zhu Yongchun,
Cheng Guangjin,
Dong Shaojun
Publication year - 2001
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/1521-4109(200109)13:13<1071::aid-elan1071>3.0.co;2-r
Subject(s) - chemistry , analytical chemistry (journal) , electrochemistry , glassy carbon , circular dichroism , spectral line , adsorption , electrode , inorganic chemistry , crystallography , chromatography , cyclic voltammetry , physics , astronomy
Electroreduction of vitamin B 2 (VB 2 ) was studied by in situ circular dichroism (CD) spectroelectrochemistry (SEC) with a long optical path length thin layer cell (LOPLTLC). The results showed that the electroreduction of VB 2 in phosphate buffer solution (PBS) (pH 6.8) was a two‐electron electrochemical process with weak adsorption of the reactant at the glassy carbon (GC) electrode surface. The CD spectra change of VB 2 in the reduction process was explained with the theory of electronic states. We also treated the CD spectra with a singular value decomposition least square (SVDLS) method, and have found not only the number of components and their spectra, but also the fraction distribution of each component in the electroreduction process of VB 2 .