Application of Comprehensive 2D GC-MS and APPI FT-ICR MS for More Complete Understanding of Chemicals in Diesel Fuel

In this study, comprehensive two dimension gas chromatography (2D GC-MS) and 15 T Fourier transform ion cyclotronresonance mass spectrometry (15T FT-ICR MS) connected to atmospheric pressure photo ionization (APPI) have beencombined to obtain detailed chemical composition of a diesel oil sample. With 2D GC-MS, compounds with aliphatic alkyl, saturatedcyclic ring(s), and one aromatic ring structures were mainly identified. Sensitivity toward aromatic compounds with morethan two aromatic rings was low with 2D GC-MS. In contrast, aromatic compounds containing up to four benzene rings wereidentified by APPI FT-ICR MS. Relatively smaller abundance of cyclic ring compounds were found but no aliphatic alkyl compoundswere observed by APPI FT-ICR MS. The data presented in this study clearly shows that 2D GC-MS and 15T FT-ICRMS provides different aspect of an oil sample and hence they have to be considered as complementary techniques to each otherfor more complete understanding of oil samples.