Separation of microamounts of yttrium from strontium by using sodium dicarbollylcobaltate, Slovafol 909 and ethylenediamine - N, N, N', N'-tetraacetic acid in the water - nitrobenzene extraction system

Summary A rapid extraction separation of trace amounts of yttrium from strontium by a nitrobenzene solution of sodium dicarbollylcobaltate (NaDCC) in the presence of p-nonylphenylnonaethylene glycol (Slovafol 909) and tetrasodium salt of ethylenediamine - N,N,N',N' - tetraacetic acid (Na₄L) in the aqueous phase was developed. The separation factor a(Sr/Y) was substantially higher than 10⁵. This water-nitrobenzene extraction system can be applied for the efficient separation of carrier-free ⁹⁰Y from ⁹⁰Y/⁹⁰Sr generator.