SORPTION BEHAVIOR OF URANIUM ON CATION AND ANION-EXCHANGE RESINS FROMHCL HF-CONTAINING AQUEOUS-SOLUTIONS - MODEL EXPERIMENTS FOR THE DETERMINATION OF CHEMICAL-PROPERTIES OF ELEMENT-106 (SEABORGIUM)/

U-232 was used for batch studies of its sorption behaviour on DOWEX 50 X8 and DOWEX 1X8 from diluted HCl/HF containing solution. It was shown that uranium remains, similar to subgroup IV elements, completely on the cation exchanger in the concentration range of 10(-4)-10(-2) M HF and 10(-2)-1.0 M HCl, whereas it is not at all sorbed on the anion exc hanger. This behaviour differs completely from that of tungsten and mo lybdenum under similar conditions. With this chemical system it is pos sible to determine the chemical properties of element 106 (seaborgium) by comparing its sorption behaviour on the cation exchanger with that of tungsten, molybdenum, and uranium.