Iodine-129: Its Occurrence in Nature and Its Utility as a Tracer
- 14 September 1962
- journal article
- research article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 137 (3533), 851-853
- https://doi.org/10.1126/science.137.3533.851
Abstract
Natural production rates of the 16 million-year iodine-129 from spontaneous fission and from cosmic-ray reactions are estimated to contribute a steady-state concentration of more than 10-14 gram of I129 per gram of I129 to the hydrosphere, the atmosphere, and the biosphere. These concentrations are expected to be detectable by neutron-activation analysis in natural materials that concentrate iodine. Substantial additional contributions have been made by fission-produced I129 in fallout, serving as an intrinsic tracer for natural iodine kinetics. Iodine-129 activation analysis has advantages as a tracer technique.Keywords
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