| Abstract: | Distributions of protactinium and tantalum between strongly acidic cation exchange resin and sulfuric acid-mixed organic solvent system were studied with Pa-233 and Ta-182 as radioactive tracers. Methyl, ethyl and isopropyl alcohols were used as miscible organic solvents and Dowex 50 W-X 2, Dowex 50 W-X 12, Bio Rad AG 50 W-X 4 and AG 50 W-X 12 were used for different cross linking cation exchange resin. Distribution ratios were plotted against acidities by keeping compositions constant or against compositions by keeping acidities constant. From these plot tings, different trends of these two metals were found. With the use of the property of especially strong absorption of protactinium in methyl alcohol solution by resin having higher degree of cross linking, AG 50 W-X 12, tantalum could be completely separated from protactinium. |
