Separation of yttrium-90 from strontium-90 and lanthanum-140 from barium-140 with anion exchange resin of carbonate form

The separation of yttrium-90 from strontium-90 or lanthanum-140 from barium-140 was carried out with an anion exchange resin in the carbonate form. It was found possible to obtain carrier-free yttrium-90 or lanthanum-140 efficiently. Moreover it is possible to separate yttrium-90 repeatedly from the carbonate solution by this method.