HYDROPEROXIDE ELECTRODE FOR BIOELECTROCHEMICAL DETERMINATION OF THE CONCENTRATION OF BIOLOGICALLY ACTIVE SUBSTANCES IN AQUEOUS SOLUTIONS AND METHODS FOR ITS PRODUCTION

摘要

The electrode is applicable as sensor for the determination of the concentration of biologically active substances in aqueous solution. The method is simplified and by its non-platinum catalyst its accuracy, reproduceability and selectivity in measurement are improved. The hydroperoxide electrode consists of hydrophobic carbon black with metal current conductor pressed in it, a layer of disperse non-platinium catalyst and dialyze membrane with biocatalyst immobilized on it. By the method, a layer of carbon black, hydrophobic made by means of polytetrafluorethylene and/or polypropylene, and/or synthetic rubber, together with a metal current conductor are pressed in a small tube of insulation material. A layer of the same carbon black in pressed in the front part of the tube with a layer of disperse non-platinum cytayst applied in advance for oxidation of the hydrogen peroxide. To this layer a dialyze membrane with biocatalyst immobilized on it is pressed.