▎ 摘　　要

NOVELTY - The method involves mixing graphene oxide powder and deionized water with reduction-oxidation graphene composite material. A graphene oxide suspension unit is connected with an ultrasonic cleaning machine, where graphene oxide powder is oxidized graphite alkene and rotating speed of the graphene oxide suspension unit is 2000-2500 rpm. Mixed liquid stir is obtained in the graphene oxide suspension unit. Ethyl alcohol is separated from deionized water. An infrared lamp is engaged with a modified electrode i.e. working electrode. USE - Electrochemical sensor based graphene modified electrode manufacturing method. ADVANTAGE - The method enables increasing detection range and ensuring stability, repeatability and selectivity efficiencies.