A differential pulse voltammetric method for simultaneous determination of ascorbic acid, dopamine, and uric acid using poly (3-(5-chloro-2-hydroxyphenylazo)-4, 5-dihydroxynaphthalene-2, 7-disulfonic acid) film modified glassy carbon electrode

Authors: Ali A Ensafi, M Taei, T Khayamian

Publication date: 2009/8/1

Journal name: Journal of Electroanalytical Chemistry

Volume: 633

Pages: 212-220

Publisher: Elsevier

A stable modified glassy carbon electrode based on the poly 3-(5-chloro-2-
hydroxyphenylazo)-4, 5-dihydroxynaphthalene-2, 7-disulfonic acid (CDDA) film was
prepared by electrochemical polymerization technique to investigate its electrochemical
behavior by cyclic voltammetry. The properties of the electrodeposited films, during
preparation under different conditions, and their stability were examined. The homogeneous
rate constant, ks, for the electron transfer between CDDA and glassy carbon electrode ...