Abstract
The paper compares the sorption characteristics of solid extractants (extraction chromatographic resin (EXC)) based on tetraoctyldiglycolamide, DGA Resin (Triskem, France) and AXIONIT MND 40T (Russia), under static and dynamic conditions with respect to Lu and Yb. It was found that for AXIONIT MND 40T (EXC-TODGA), in contrast to DGA Resin (EXC-DGA), sorption equilibrium is attained much more slowly and signi cantly depends on the temperature and size of the extractant granules. The desorption of ytterbium and lutetium using various reagents was studied, and the solutions of DTPA and ammonium citrate were found to be the most e ective. The optimal conditions for concentration ytterbium and lutetium with the given solid extractants were determined and tested using real radioactive solutions.
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