Acetanilide Modified Carbon Paste Electrode for the Electrochemical Detection of Dopamine: A Cyclic Voltammetric Study

The acetanilide modified carbon paste electrode (ANMCPE) was used for the voltammetric response of dopamine (DA) in an aqueous phosphate buffer solution (PBS). Modified carbon paste electrode was prepared by grinding the 5 mg of acetanilide (AN) with the mixture of graphite powder and silicon oil. Cyclic Voltammetric study improved the reversibility of the DA on the modified electrode. The effect of various experimental parameters such as acetanilide concentration, scan rate, and pH on the voltammetric response of DA was investigated. Under the chosen conditions, the differential pulse voltammetry peak current was found to be linear with DA concentration. The detection limit for modified electrode was found to be 6×10-7 M for DA determination.