MODIFIED ELECTRODES FOR ELECTROCHEMICAL DETECTION IN FLOWING STREAMS

Chemically modified electrodes exhibit unique behavior which can greatly benefit electrochemical detection in flowing streams. A review of the development and applications of modified electrodes in flow analysis is presented. Detailed discussions are given for different surface-modification strategies employed in flow analysis. Special attention is paid to electrocatalytic surfaces that allow the use of lower operating potentials, permselective coatings that offer controlled access at the detector surface or the incorporation of biological entities that specifically recognize the analyte. Future prospects are examined. © 1990.