引用本文:
Mohammad Mazloum-Ardakani, Mohammad Ali Sheikh-Mohseni, Hadi Beitollahi, Ali Benvidi, Hossein Naeimi. Electrochemical determination of vitamin C in the presence of uric acid by a novel TiO2 nanoparticles modified carbon paste electrode[J]. Chinese Chemical Letters,
2010, 21(12): 1471-1474.
doi:
10.1016/j.cclet.2010.07.026
Citation: Mohammad Mazloum-Ardakani, Mohammad Ali Sheikh-Mohseni, Hadi Beitollahi, Ali Benvidi, Hossein Naeimi. Electrochemical determination of vitamin C in the presence of uric acid by a novel TiO2 nanoparticles modified carbon paste electrode[J]. Chinese Chemical Letters, 2010, 21(12): 1471-1474. doi: 10.1016/j.cclet.2010.07.026
Citation: Mohammad Mazloum-Ardakani, Mohammad Ali Sheikh-Mohseni, Hadi Beitollahi, Ali Benvidi, Hossein Naeimi. Electrochemical determination of vitamin C in the presence of uric acid by a novel TiO2 nanoparticles modified carbon paste electrode[J]. Chinese Chemical Letters, 2010, 21(12): 1471-1474. doi: 10.1016/j.cclet.2010.07.026
Electrochemical determination of vitamin C in the presence of uric acid by a novel TiO2 nanoparticles modified carbon paste electrode
摘要:
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.
English
Electrochemical determination of vitamin C in the presence of uric acid by a novel TiO2 nanoparticles modified carbon paste electrode
Abstract:
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.
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Key words:
- Aseorbic acid
- / Uric acid
- / TiO2 nanoparticles
- / Electrocatalysis
- / Modified carbon paste electrode
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