Electrode with the Electrodeposited Gold–Bismuth Binary System for Voltammetric Determination of Phenylephrine, Paracetamol, and Caffeine

The Au–Bi binary system electrodeposited on the surface of a glassy carbon electrode exhibits catalytic activity during electrooxidation phenylephrine, paracetamol, and caffeine that enhances peak currents decreases overvoltage in oxidation organic compounds. potential difference between peaks modified is 400 mV for phenylephrine paracetamol 300 caffeine, respectively. possibility simultaneous voltammetric determination by was established. calibration curve linear concentration range from 5·10–6 to 5·10–3 M. developed method tested analysis combined drugs.