Abstract:
The electropolymerisation of fast green was prepared on the surface of graphite pencil electrode using
cyclic voltammetric technique. This poly (fast green) modified graphite pencil electrode shows good electrocatalytic
activity in the detection of dopamine when compared to bare graphite pencil electrode in 0.2 M phosphate buffer
solution of pH 7.0. The effect of scan rate show that the electrode process was diffusion controlled. The concentration
and pH effects on the voltammogram of dopamine were studied. The poly (fast green) modified graphite pencil
electrode was shows excellency in resolution of dopamine in presence of large excess of ascorbic acid and uric acid
concentrations. The interfering study was made by increasing the concentration of one species and keeping
concentration of other two species constant. The poly (fast green) film coated electrode shows outstand ing potential
difference for dopamine, ascorbic acid and uric acid in their mixture.
