Biosensors & Bioelectronics

Poly(alcian blue) Modified Carbon Paste Electrode for the Determination of Catechol in Presence of Hydroquinone: A Voltammetric Study

Abstract

Rekha, Swamy BEK* and Ganesh PS

The carbon paste electrode (CPE) was modified by electropolymerisation of alcian blue in 0.2 M phosphate buffer solution (PBS) of pH 7.4 by using cyclic voltammetric (CV) technique. The fabricated electrode was employed for the electrochemical analysis of catechol (CC) and hydroquinone (HQ). The effect of scan rate suggests the adsorption controlled electrode process. A good analytical performance was observed in terms of sensitivity, selectivity, linearity and observed detection limits. The lower limit of detection of CC and HQ was found to be 0.104μM and 0.142μM by cyclic voltammetric technique. Because of the catalytic capability of the fabricated electrode the simultaneous separation was observed in a binary mixture containing CC and HQ.