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. Author manuscript; available in PMC: 2019 Apr 17.
Published in final edited form as: Chem Erde. 2017 Jan 26;77(2):227–256. doi: 10.1016/j.chemer.2017.01.007

Figure 6.

Figure 6.

A total ion chromatogram for pyrolysates with molecular weights of benzene and higher produced by flash pyrolysis GCMS of a Murchison IOM residue at 600°C. Roughly 25–30 wt.% of the sample was lost as volatile, low molecular weight material, much of this being CO, CO2, H2O, SO2 and H2S. The remainder of the sample formed a char. For the pyrolysates with molecular weights of benzene and higher shown here, the bulk (ca. 80 % of the ion intensity) are in an unresolved organic matter (UOM), sometimes also referred to as humpane, that produces the nearly continuous humped background. Superimposed on the UOM are many sharp peaks (totaling ca. 20 % of the ion intensity), but even the most intense of these, naphthalene, only accounts for ~1.5 % of the total ion intensity in this chromatogram and a much smaller fraction of the material in the IOM residue.