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The isotopic compositions of individual aromatic molecules produced during pyrolysis of Orgueil IOM. Squares are from Remusat et al. (2006) and triangles are from Wang et al. (2005). Open symbols are for unsubstituted molecules, and filled symbols are for substituted molecules. The solid line is the bulk composition of Orgueil IOM (Alexander et al., 2007b), and the dashed lines are the isotopic compositions of the end-member components for Orgueil IOM proposed by Remusat et al. (2006).
