Separation of strontium from yttrium nitrate solutions by solvent extraction with dicyclohexano-18-crown-6

Abstract

The extraction of strontium and yttrium by a 0.2 M solution of dicyclohexano-18-crown-6 (DCH18C6) in n-octanol from nitric acid solutions as well as from solutions of yttrium nitrate in nitric acid was studied. Increasing the nitric acid concentration within the 0.1-7 M range and yttrium nitrate concentration within the 0.1-2 M range considerably improves strontium extraction, increasing its distribution ratio up to 40. Meanwhile, the yttrium distribution ratio at these conditions does not exceed 0.05. High separation efficiency of strontium and yttrium at a high yttrium nitrate concentration allows considering DCH18C6 as a promising extractant for the process of n.c.a. 89 Sr isolation from fast neutron irradiated yttrium targets.

Enhanced production possibility of the therapeutic radionuclides 64Cu, 67Cu and 89Sr via (n,p) reactions induced by fast spectral neutrons

“…The precipitate was filtered and washed with 0.1 N Na 2 SO 4 and water. The deposit was dissolved in 16 M HNO 3 and extracted with TBP for additional cleaning [16]. The final product was sedimented on a 0.1 mm thick Al foil as a thin layer for β − counting.…”