Electrochemical determination of vitamin C in the presence of uric acid by a novel TiO2 nanoparticles modified carbon paste electrode

The electrochemical behavior of vitamin C（ascorbic acid or AA） is investigated on the surface of a carbon-paste electrode modified with TiO2 nanoparticles and 2,2＇-（1,2 butanediylbis（nitriloethylidyne））-bis-hydroquinone（BBNBH）.The prepared modified electrode showed an efficient catalytic role in the...

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Bibliographic Details
Published in:Chinese chemical letters 2010-12, Vol.21 (12), p.1471-1474
Main Author: Mohammad Mazloum-Ardakani Mohammad Ali Sheikh-Mohseni Hadi Beitollahi Ali Benvidi Hossein Naeimi
Format: Article
Language:English
Subjects:
二氧化钛纳米粒子
修饰电极
修饰碳糊电极
准确测定
电化学行为
纳米二氧化钛
维生素C含量
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Summary:The electrochemical behavior of vitamin C（ascorbic acid or AA） is investigated on the surface of a carbon-paste electrode modified with TiO2 nanoparticles and 2,2＇-（1,2 butanediylbis（nitriloethylidyne））-bis-hydroquinone（BBNBH）.The prepared modified electrode showed an efficient catalytic role in the electrochemical oxidation of AA,leading to remarkable decrease in oxidation overpotential and enhancement of the kinetics of the electrode reaction.This modified electrode exhibits well-separated oxidation peaks for AA and uric acid（UA）.The modified electrode is successfully applied for the accurate determination of AA in pharmaceutical preparations.
ISSN:1001-8417
1878-5964
DOI:10.1016/j.cclet.2010.07.026