▎ 摘　　要

NOVELTY - Preparing carbonaceous hydrogenation catalyst comprises (i) preparing graphene oxide by modified Hummers method using graphite as raw material; (ii) preparing reduced graphene oxide using 8-15 mg/ml graphene oxide as a raw material through ultrasonic treatment by hydrothermal synthesis; (iii) filtering the reduced graphene oxide, washing and drying; and (iv) subjecting the dried product to high-temperature heat treatment under an inert atmosphere, to obtain the final product. USE - The catalyst is useful for sampling swab containing polycyclic aromatic hydrocarbon anthracene and solvent (claimed). ADVANTAGE - The catalyst has hydrogenation activity; and is suitable for large scale production. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for use method of carbonaceous hydrogenation catalyst in sampling the swab containing polycyclic aromatic hydrocarbon anthracene and solvent, preferably cyclohexane, heptane or decalin comprising subjecting the sample with a catalyst into fixed-bed gas-solid phase catalytic reaction device and hydrotreating in a down-flow or up-flow manner, where the polycyclic aromatic hydrocarbon anthracene content is 0.3-0.5 wt.%, the hydrotreating process is carried out 300-400 degrees C under 3-8 MPa hydrogen partial pressure, 400-2000 hydrogen-oil ratio and 0.3-3/hour liquid hourly space velocity (LHSV).