THE DETERMINATION OF TRACE AMOUNTS OF THORIUM IN URANIUM

Carrier-free Th/sup 234/ was obtained from uranium in a 7M HCl solution by passage through a column of Deacidite FF anion exchange resin and elution with acid of the same concentration. The procedure was used for the determination of microgram amounts of thorium in uranium. The eluate from the column was concentrated and the thorium precipitated with calcium as the oxalate. The precipitate was then ignited and its thorium content determined spectrographically. (auth)