▎ 摘　　要

NOVELTY - A dopamine and an adrenaline-modified glassy carbon electrode detecting method involves coating a composite coating on the surface of the glassy carbon electrode, where the composite coating is composed of a combination of graphene oxide and ruthenium. USE - Method for detecting dopamine and adrenaline-modified glassy carbon electrode. ADVANTAGE - The method enables ensuring high specific surface area, catalytic activity and better electrical conductivity, achieving simultaneous determination of dopamine and adrenaline and accurately distinguishing the potentials of dopamine and adrenaline. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for the following: (1) a method for preparing a dopamine and adrenaline-modified glassy carbon electrode, which involves dissolving blush in a phosphate buffer solution to obtain a blush solution after constant volume, dispersing graphene oxide in N,N-dimethylformamide, sonicating to obtain a graphene oxide dispersion, dripping the graphene oxide dispersion on the surface of the polished and cleaned glassy carbon electrode by using a drop coating method, drying, performing the deposition by electrodeposition and drying the ruthenium solution obtained in the product to obtain the graphene oxide/ruthenium composite modified electrode (2) simultaneously detecting a dopamine and adrenaline modified glassy carbon electrode applying method, which involves preparing a series of concentration gradient standard solutions, respectively, into the working electrode, the auxiliary electrode and the reference electrode, detecting the electrochemical response signal on the working electrode, according to the electrochemical response signal and concentration corresponding relationship establishes concentration-electrochemical response signal relationship, placing a working electrode, an auxiliary electrode and a reference electrode in the solution to be tested, and detecting an electrochemical response signal on the working electrode, according to the concentration-electrochemical response signal relationship and calculating the concentration of the analyte.