Investigation And Evaluation Of Electrochemical Behavior Of Glycine On The Surface Of Glassy Carbon Electrode

Abstract

A novel and indirect voltammetric procedure for the selective determination of glycine is described. It is based on the oxidation of Hydroquinone (HQ) on an unmodified glassycarbon electrode (GCE), generated by the selective reaction between glycine and Quinone. A single reduction peak of HQ at -0.11V was observed, while glycine is not electroactive under this condition, showing that this reaction can be used to indirect detection of glycine. Under the optimized conditions, a linear response between 1.20×10-10 and 1.08×10-9 M and a detection limit of 9.61×10-11 M were achieved. The procedure is a promising alternative for rapid glycine determination in a wide range of samples.