Abstract
In the present study, we report the simultaneous electrochemical determination of hydroquinone (HQ), catechol (CC) and resorcinol (RC) at gold nanoparticles (Au-NPs) decorated reduced graphene oxide (RGO) modified electrode. An enhanced and well defined peak current response with a better peak separation of HQ, CC and RC is observed at RGO/Au-NPs composite than that of RGO and Au-NPs modified electrodes. The fabricated modified electrode shows a wide linear response in the concentration range of 3-90 mu M, 3-300 mu M and 15-150 mu M for HQ, CC and RC, respectively. The detection limit of HQ, CC and RC is found as 0.15 mu M, 0.12 mu M and 0.78 mu M, respectively.