ELECTROCHEMICAL DETECTION OF ASCORBIC ACID USING PRUSSIAN BLUE/POLY-(3,4-ETHYLENEDIOXYTHIOPHENE)FILMS ON PLATINUM

摘要

Electrochemical behaviour and analytical applications of bilayer films consisting of iron(III)hexacyanoferrate,well known as Prussian Blue(PB),and subsequently of poly-[3,4-ethylenedioxythiophene](PEDOT),on a platinum electrode,are reported.The electrocatalytic activity of the Prussian Blue/conducting polymer bilayer system towards the oxidation of ascorbic acid is examined in aqueous solutions.From differential pulse voltammograms,a linear dependence of the current on the ascorbic acid concentration up to 4 mM has been obtained.