Obtaining 228ra (MsTh 1) from thorium nitrate
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Australian Atomic Energy Commission
Abstract
135 kilograms of thorium nitrate purified and recrystallised in 1958 have been treated to extract 228Ra in radioactive equilibrium. Most of the thorium was eliminated by solvent extraction (T.B.P.) and final purification was by chromatography (Dowex 50 W x 8 and 1 x 8 resins). The total yield attained was 38% + 4%.
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Twining, J. (1981). Obtaining 228ra (msth 1) from thorium nitrate. translated from the french report cea-r-3582 (AAEC-ESD-5). Lucas Heights, N.S.W.: Research Establishment, Australian Atomic Energy Commission.