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Science 13 March 1970:
Vol. 167. no. 3924, pp. 1494 - 1497
DOI: 10.1126/science.167.3924.1494
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Articles

Uranium Localization on Hydroxyapatite by Analysis of Fission Fragment Tracks

Robert C. Thompson 1

1 National Institute of Dental Research, National Institutes of Health, Bethesda, Maryland 20014

The distribution of enriched uranium on individual hydroxyapatite crystals after an exchange reaction has been investigated by means of thermal neutron irradiation followed by electron microscopic analysis of fission fragment tracks in plastic support films. One uranyl ion for every two to three surface calcium ions became associated with the mineral but in a nonuniform distribution that strongly favors crystal end regions.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)