In this paper, the polymerization process and mechanism of fuchsin basic at the glassy carbon electrode were investigated. The polymerization conditions such as applied potential, time and buffer solution were found to affect the polymerzation process. In addition, the modified electrode showed a catalytic ability to the voltammetric response of dopamine. This ability was applied to the determination of dopamine in solution. In pH = 7.0 phosphate buffer solution, the linear range of dopamine was 2X10^-7-1X10^-5 mol/L and the detection limit was 1X10^-7 mol/L. This modified electrode had a good stability, high selectivity and fast response.
Chemical Journal of Chinese Universities (Gaodeng Xuexiao Huaxue Xuebao),
Vol. 18, no. 3 (1997)