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Krejzler, J.; Siekierski, S.
Institute of Nuclear Chemistry and Technology, Warsaw (Poland)1990
Institute of Nuclear Chemistry and Technology, Warsaw (Poland)1990
AbstractAbstract
[en] Extraction of La, Pr, Nd and Sm in the HNO3-HDEHP system has been studied. The distribution ratios have been measured as a function of HNO3 and HDEHP concentration. Extraction isotherms at different HNO3 concentrations were determined for the lanthanides studied. The dependence of the distribution ratio of the microcomponent on the concentration of the macrocomponent was studied for the La-Pr, La-Nd, Pr-Nd and Nd-Sm pairs. Processes for removal of praseodymium impurities from lanthanum as well as for separation of neodymium from samarium have been proposed. 3 refs., 26 figs., 15 tabs. (author)
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1990; 36 p; CONTRACT CPBP 01.18 AND 03.08
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