Figure 4.

Selected ion chromatographs in negative-ion electrospray for reactions of adenine with Fenton reagents and in presence of pyrite. Two products result from the oxidation of adenine, 2-hydroxyadenine and 8-oxoadenine. Also indicated are the calculated accurate masses of each analyte and the difference when compared with the measured mass of the depronated parent ions.

Cohn et al. Geochemical Transactions 2010 11:2   doi:10.1186/1467-4866-11-2
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