Abstract
The thin-layer chromatographic method was investigated for the carrier-free separation of 90Sr and 90Y with the several kinds of adsorbents and developers. With the “Wakogel B-0” layer (the silicagel with no binder) , 90Sr is transferred farther than 90Y by developing with ethylalcohol-10% ammonium thiocyanate (5 vol: 3 vol) or ethylalcohol-7M lithium nitrate (1: 1) . With the “Wakogel B-5” layer (the silicagel with 5 % plaster of Paris), no separation of these nuclides was attained. With the Dowex 50 resin layer, 90Y is transferred farther with 5% ammonium citrate solution of pH 3.8. The method has the advantage that one can prepare carrier free 90Y in a simple way and in a short while.
