Permselectivity and preconcentration properties of taurine/graphite oxide electrode coatings: Analytical perspectives

A glassy carbon electrode is modified by the formation of a taurine/graphite oxide film. The procedure involves potentiostatic oxidation of taurine in a pH 7 solution. The modified electrode presents attractive features such as permselectivity against anions and preconcetration of cation species leading to an increased selectivity and sensibility respect to a bare electrode. Potential analytical applications are investigated.