Determination of acrylamide using ruthenium dioxide modified carbon paste electrode

Abstract

A simple indirect method for acrylamide determination using a carbon paste electrode (CPE) modified with powdered ruthenium dioxide is described in the study. The voltammetric response of RuO2/CPE in a 1.0 M LiCl supporting electrolyte resulted in the reduction current at a potential of 1.03 V vs. Ag/AgCl/ 3.0 M KCl due to the formation of unspecified Ru-Cl species. The addition of acrylamide decreased the reduction current at 1.03 V, giving rise to a linear response in the concentration range from 0.25 μM to 1.5 μM with a limit of detection found to be 0.94 μM. The method developed was successfully applied to analyse potato crisps sample with a recovery rate of 97.9 %.