Effective separation of Am(III) and Cm(III) using a DGA resin via the selective oxidation of Am(III) to Am(V)
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A new method was developed to effectively separate Am(III) from Cm(III). Am(III) was selectively oxidized to Am(V) using a mixture of Na2S2O8, Ag(I), and NaOCl in 0.01 M HNO3. Cm(III) was selectively retained on a DGA resin, while Am(V) had no retention. A separation factor of 110 ± 20 was usually obtained from a single separation. The new separation method was applied to determine Cm isotopes 244, 245 and 246 by accelerator mass spectrometry (AMS) in spent nuclear fuel samples.
KeywordsCurium Americium Separation DGA resin Accelerator mass spectrometry (AMS) Nuclear fuel
This research was undertaken for Atomic Energy of Canada limited and funded by the Canadian Federal Science and Technology program for Project 51200.50.18.06.
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