Electrochemical behavior and simultaneous determination of vitamin B2, B6, and C at electrochemically pretreated glassy carbon electrode

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Title: Electrochemical behavior and simultaneous determination of vitamin B2, B6, and C at electrochemically pretreated glassy carbon electrode
Author(s): Gu, Hai-Ying; Yu, Ai-Min; Chen, Hong-Yuan
Abstract: An electrochemically pretreated glassy carbon electrode (PGCE) was achieved by anodic oxidation at 1.8 V and following potential cycling in the potential range from -0.8 to + 1.0 V. The resulting PGCE gave well-defined redox peaks with Epa = -0.073 V, Epc = 0.044 V. The PGCE showed good activity in improving the electrochemical responses of some water-soluble Vitamins, such as Vitamin (VB2), Vitamin (VB6) and Vitamin (VC). VB2, VB6 could be adsorbed at PGCE and VC proceeded with an electrocatalytic process. The electrochemical behavior of VB6 at PGCE depended on the potential scanning method and the pretreatment process of the electrode. The PGCE was rather stable and can be used to simultaneously determine these vitamins in multivitamin tablets.
Publication type: Journal article
Source: Analytical Letters, Vol. 34, no. 13 (2001), pp. 2361-2374
Publication year: 2001
FOR Code(s): 0301 Analytical Chemistry
Keyword(s): Adsorption; Ascorbic acid; Carbon; Catalysis; Drug determination; Electrochemically pretreated GCE; Electrochemistry; Electrode; Glass; Oxidation reduction reaction; Pyridoxine; Riboflavin; Simultaneous determination; Vitamin B2; Vitamin B6; Vitamin C
Publisher: Marcel Dekker (now an imprint of Taylor & Francis)
ISSN: 0003-2719
Publisher URL: http://dx.doi.org/10.1081/al-100107301
Peer reviewed