Comprehensive two-dimensional gas chromatography with time of flight mass spectrometry applied to biomarker analysis of oils from Colombia

In order to become GC × GC–TOFMS a useful tool in geochemical oil prospecting, it is mandatory to be able to calculate quantitative geochemical parameters. A suite of Colombian oils from Upper Magdalena Valley Basin was chosen to obtaining several thermal maturity and source parameters based on biomarker ratios showing that GC × GC–TOFMS is able to be used to provide relevant geochemical information. ⺠GC × GC–TOFMS is able to be used to provide usual biomarker ratio to analysis of oils. ⺠A detailed analysis of biomarker composition of oils from Colombia was provided by GC × GC–TOFMS. ⺠Coelution between lupane and 18(α)-oleanane was solved by GC × GC–TOFMS.