Direct Measurement of Traces of Vitamin C in Urine Using a Modified Glassy Carbon Electrode

Publisher Website
Google Scholar
Abstract
This report deals with the application of cyclic voltammetry for the preparation of polymer modified electrodes. The monomer used was diphenyl amine (DPA), and the electrolyte was HClO4. Cyclic voltammetry was used because the polymer formed by this method adheres tightly to the electrode and also deposits as a very smooth layer. The polymer was then used on the glassy carbon electrode in order to make a modified electrode for detection of vitamin C in urine. Different variables were studied in order to find the most suitable conditions for this electrode. Linear response of electrode to ascorbic acid concentration was very high with limit of detection of 0.2 ppm.