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  • 1 H. Niewodniczanski Institute of Nuclear Physics 31-342 Cracow Poland
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The extraction of actinium with HDEHP from Cl and NO 3 systems has been investigated. It was found that extraction of actinium from HCl solutions is much better than from HNO3 solutions. Stability constants of the actinium complexes Ac(X)2+, X=Cl or NO 3 , were determined. Our results show that actinium formed less stable complexes with Cl than with NO 3 ligands.