Citation: Wei Song, Yu Chen, Juan Xu, Dan Bi Tian. A selective voltammetric detection for dopamine using poly (gallic acid) film modified electrode[J]. Chinese Chemical Letters, ;2010, 21(3): 349-352. doi: 10.1016/j.cclet.2009.10.008 shu

A selective voltammetric detection for dopamine using poly (gallic acid) film modified electrode

College of Science, Nanjing University of Technology, Nanjing 210009, China

Received Date: 8 July 2009

The electrochemistry behavior of dopamine was investigated by cyclic voltammetry and differential pulse voltammetry at a poly (gallic acid) film modified glassy carbon electrode. Two electrons and two protons participated in the diffusion-controlled electrocatalytic oxidation of dopamine with a diffusion coefficient of 2.186×10^-5 cm²/s. The interference of ascorbic acid with the determination of dopamine could be efficiently eliminated. This work provided a simple approach to selectively and sensitively detect dopamine in the presence of high concentration of ascorbic acid.
- Dopamine,
- Ascorbic acid,
- Gallic acid,
- Electropolymerization,
- Modified electrode
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