Journal
RADIATION PHYSICS AND CHEMISTRY
Volume 80, Issue 3, Pages 403-407Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.radphyschem.2010.09.010
Keywords
Prebiotic chemistry; Gamma irradiation; Analytical chemistry; Reaction mechanisms
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Aqueous solutions of simple organic Cl compounds (methanol and acetonitrile) and ammonia, presumably present on primordial Earth, were subjected to Co-60 gamma irradiation (total dose 800 kGy). The irradiation gave a complex mixture of organic compounds leading interestingly to a positive balance of synthesis vs. degradation reactions. In particular, if acetonitrile was used, nucleobase analogues could be detected among products. Highly sensitive and powerful analytical techniques (e.g. GC-MS, HPLC-MS) made this investigation feasible at a reasonable cost in terms of time and results. Plausible reaction pathways leading to major compounds were proposed, supported by literature data. (C) 2010 Elsevier Ltd. All rights reserved.
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