Abstract
Light gas oil (LGO) as fuel for diesel engines contains numerous aromatic hydrocarbon (mono, di and poly) compounds. High contents
of these compounds negatively influence the LGO standard specification. The LGO aromatic compounds were separated into several
subfractions by active silica gel and different organic solvents. FT-IR, NMR and Gas chromatography/Mass spectrometry (GCMS) techniques were used to identify and characterize these aromatic compounds. The results indicated that the RASCO LGO contains low aromatic compounds (9.27%). The polyaromatic compounds and alkyl / substituents (C1 to C5) exit in a trace concentration while the di and alkyl aromatic compounds are dominant in RASCO LGO.