Simultaneous Electrochemical Determination of Ascorbic Acid, Dopamine and Uric Acid Based on Nitrogen Doped Carbon Sphere Modified Glassy Carbon Electrode

摘要

Nitrogen doped carbon sphere (NDCS), with an average diameter ranging from 220 to 280, wasprepared with glucose and melamine mixture as starting materials and ethylene glycol as the solventand reducing agent by solvothermal method. The microstructures of the NDCS were characterized byX-ray photoelectron spectroscopy (XPS) , XRD pattern and Raman spectra. NDCS exhibited highlyelectrocatalytic activity towards the oxidation of biomolecules such as ascorbic acid (AA), dopamine(DA) and uric acid (UA) due to its unique structure and properties originating from nitrogen doping.This new finding provides a novel and promising candidate of advanced electrode material for thesimultaneous determination of AA, DA and UA in human metabolism.