Electrochemical Investigation of 4-Aminophenol at CTAB Modified Carbon Paste Electrode: A Cyclic Voltammetric Technique

4-aminophenol is the main impurity present in preparations of paracetamol.using the cyclic voltammetry, the electrode behaviour of 4-aminophenol has been studiedin 0.1 m phosphate buffer solutions at carbon paste electrode and surfactant modifiedcarbon paste electrode. the optimal potential window of wide range from -0.4 v to 0.7 vwas selected. the electron transfer kinetics of the ctab/cpe in the detection of analytewas determined by the scan rate effect and concentration variation studies. the scan rateeffect showed the electrode process is adsorption controlled. the oxidation peak currentsrepresented a linear dependence on 4-aminophenol concentration from 1 mm to 4 mmwith correlation coefficient r2=0.9942. the effect of cationic surfactant shows good highsensitivity and stability for the redox process of the 4-amino phenol. the detection limitwas found to be 1×10-7 m.