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Residue adsorption—II:Separation of barium-140 and lanthanum-140 by reverse order desorption

Authors
Journal
Journal of Inorganic and Nuclear Chemistry
0022-1902
Publisher
Elsevier
Publication Date
Volume
27
Issue
7
Identifiers
DOI: 10.1016/0022-1902(65)80035-5

Abstract

Abstract The adsorption behaviour of barium-140 and lanthanum-140 is similar, in aqueous solution, to that of strontium-90 and yttrium-90, in that the lanthanum-140 is more strongly adsorbed than the barium-140. However, when the residue is washed with a non-polar solvent containing a small percentage of concentrated aqueous acid barium-140 is more strongly adsorbed than lanthanum-140. The results are interpreted on the basis of the ionic and complex characters of the barium and lanthanum compounds, respectively. Preliminary work indicates that the separation by residue adsorption of calcium from sodium, barium and strontium is feasible.

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