Biotechnology Letters, Vol.22, No.7, 579-583, 2000
A reusable amperometric biosensor based on a novel silver-epoxy electrode for immunoglobulin detection
A renewable immunosensor consisting of an 'epoxygraphite' biocomposite containing silver and tetracyanoquinodimethane (TCNQ) is described. These compounds enhance conductivity allowing the use of a smaller potential (0.28 v) which, in turn, enhances selectivity. This sensor, which may be renewed by simple polishing of its surface, was employed to detect human IgG using peroxidase-coupled anti-human IgG.