Abstract: The sulfides in straight-run gasoline of Russia were employed to separate, enrich and evaluate by the ligand-exchange column chromatography using silica gel impregnated with palladium chloride. The concentrated sulfides were identified by GC/PFPD and GC/MS. Major sulfides were quantified by area normalization method. The result shows that the ligand-exchange column chromatography is an effective method to separate sulfides in light oil. The sulfides in straight-run gasoline are mainly alkyl tetrahydrothiophene and alkyl tetrahydrothiopyran, and cyclosulfuricethers of C₆-C₁₀ are identificated.