CARRIER-FREE SEPARATION OF THE INDIVIDUAL RARE EARTH RADIONUCLIDES FROM FISSION PRODUCT MIXTURES

摘要

A procedure based on solvent extraction with iethylhexylphosphoric acid vas tested for the quantitative carrier-free separation of yttrium and the rare earth group elements from other fission products. This procedure is simpler and more rapid than the previously used caution exchange resin separations of rare earths from alkali metals and alkaline earths. Subsequent quantitative carrier-free isolation of individual rare earth fission products vas accomplished by their elution from cat ion exchange resin with alpha-hydroxyisobutyric acid at room temperature.