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Citation: JIN Gen-Di, HU Xiao-Ya, LENG Zong-Zhou, WANG Cheng-Yin, YAO Cheng. Selective Determination of Dopamine in the Presence of Large Amount of Ascorbic Acid Based on the Redox Process of Aniline[J]. Chinese Journal of Applied Chemistry, ;2000, 17(5): 572-574. shu

Selective Determination of Dopamine in the Presence of Large Amount of Ascorbic Acid Based on the Redox Process of Aniline

1.
a Department of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002;
2.
b Department of Applied Chemistry, Nanjing University of Chemical Engineering, Nanjing

Received Date: 26 January 2000
Available Online: 17 April 2000

A pair of reversible waves at 0.335 V(vs.SCE) in cyclic voltammograms caused by reaction of dopamine with aniline on a platinum electrode were observed in 1.0 mol/L HCl containing aniline. The linear ranges were 1.0×10^-6~1.1×10^-5 mol/L and 1.4×10^-5~1.7×10^-4 mol/L with detection limit of 5.0×10^-7 mol/L. The oxidative peak of ascorbic acid was found at ca. 0.640 V. 100 times of ascorbic acid showed no interference to the determination of dopamine.
- dopamine,
- aniline,
- ascorbic acid,
- platinum electrode,
- voltammetry
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