Solvent Extraction of Some Lanthanides with Trioctylphosphine Oxide in Molten Paraffin Wax

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The extraction behavior of Ln(Ⅲ) (Ln=Nd, Sm, Tb and Yb) with trioctylphosphine oxide (TOPO) in molten paraffin wax has been studied. The effect of pH, TOPO concentration, medium, stirring time and the amount of salts added on the distribution of lanthanid
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