▎ 摘　　要

NOVELTY - Doping graphene in the stationary phase of a gas chromatography column involves using an improved method based on the traditional sodium chloride deposition method, fixing graphene by recrystallization of sodium chloride. The graphene is used to physically occupy the space before the stationary phase is coated by physical adsorption. The graphene is introduced at the corresponding position of the stationary phase after coating. The method specifically includes adding sodium chloride to the methanol solution to form a saturated methanol solution of sodium chloride. The graphene is ultrasonically crushed in chloroform for 2 hours to obtain a chloroform suspension of graphene. The saturated methanol solution of sodium chloride and the chloroform suspension of graphene mixed to prepare a mixed suspension. The physical saturation adsorption treatment performed on the capillary. USE - Method for doping graphene in the stationary phase of a gas chromatography column. ADVANTAGE - The method enables to dope graphene in the stationary phase of a gas chromatography column has simple operation, universal method, uniform attachment, low column loss, improves the inner surface roughness of the chromatographic column, increases the internal specific surface area, which is suitable for various chromatographic column stationary phases, improves column efficiency, and has good application prospects. DETAILED DESCRIPTION - Doping graphene in the stationary phase of a gas chromatography column involves using an improved method based on the traditional sodium chloride deposition method, fixing graphene by recrystallization of sodium chloride. The graphene is used to physically occupy the space before the stationary phase is coated by physical adsorption. The graphene is introduced at the corresponding position of the stationary phase after coating. The method specifically includes adding sodium chloride to the methanol solution to form a saturated methanol solution of sodium chloride. The graphene is ultrasonically crushed in chloroform for 2 hours to obtain a chloroform suspension of graphene. The saturated methanol solution of sodium chloride and the chloroform suspension of graphene mixed to prepare a mixed suspension. The physical saturation adsorption treatment performed on the capillary. The graphene is one or more of single-layer graphene, multilayer graphene, graphene quantum dots, graphene nanosheets, modified graphene, and graphene oxide.