▎ 摘　　要

NOVELTY - The electrochemical sensor has graphene working electrode (1) doped with heteroatom selective to biological materials desired detected, and counter electrode (3) which is the conductive electrode on which the current will pass in the analysis system. The sensor further comprises a reference electrode and a signal recording potentiostat/galvanostat for recording the current generated between the counter electrode and the working electrode with the signal. The heteroatoms are nitrogen, chlorine, phosphorus, sulfur or oxygen. USE - Electrochemical sensor for detecting purified cell, vim, organelle, vesicle or nucleic acid biological materials qualitatively and quantitatively. ADVANTAGE - The electrochemical sensor can detect cell, virus, organelle, vesicle or nucleic acid types qualitatively and quantitatively. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for an method of detecting purified cell, vims, organelle, vesicle or nucleic. DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of electrochemical biosensor for detecting cell. 1Working electrode 2Electrode 3Counter electrode 4Analyte solution 5Sensor