Figures F1-F4
F1. Mass chromatogram of m/z 83 diagnostic of alkenes.
F2. Mass chromatograms of m/z 191 and m/z 217 in a sample from Site 1063 compared to a typical distribution in an oil from Kazakhstan.
F3. Mass chromatograms of m/z 91 for petroleum hydrocarbons from a Kazakhstan oil well compared to a sample from Site 1063.
F4. Mass chromatograms showing distributions commonly associated with nitrogen containing compounds.
