▎ 摘　　要

NOVELTY - Analyzing doped sulfur components in graphene, comprises (a) preparing graphene containing sulfur components in at least two forms including doped form, salt form and mixed species form, (b) washing the graphene containing the sulfur component to separate graphene doped with sulfur component, (c) drying and pulverizing the separated graphene, (d) preparing mixed sample by adding blowing agent into the graphene powder, and (e) performing combustion-infrared spectroscopic method using the spectroscope and the mass spectrometer by burning the mixed sample. USE - The graphene is useful in secondary batteries and fuel cells. ADVANTAGE - The method controls physical properties of graphene by quantitative analysis of sulfur component content doped in graphene.