The Solubility of Some Uranium Compounds in Simulated Lung Fluid

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Abstract
Solubility studies, using a simulated lung fluid, have been carried out on a number of uranium compounds used in the manufacture of nuclear fuel elements in the Springfields Works of British Nuclear Fuels Limited. The work was concerned with those compounds which are sparingly soluble in water, since from operational experience and biological monitoring over many years, the classification of soluble uranium compounds was well established. From the results obtained, it was possible to allocate the compounds investigated to the appropriate biological clearance capacity (days, weeks, years) proposed by the ICRP Task Group on Lung Dynamics. An attempt to relate particle size to solubility, did not in general prove successful, but some evidence was obtained to indicate that thermal history may be as, or more important than particle size, in the particle size ranges investigated.

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