Separating Behaviors of Heavier Rare Earth Metal Ions in Centrifugal Partition Chromatography with Di(2-Ethylhexyl) Phosphoric Acid

Abstract

The separating behaviors of SmCl₃, EuCl₃, GdCl₃, TbCl₃, DyCl₃, HoCl₃, ErCl₃, TmCl₃, YbCl₃, and LuCl₃ in Centrifugal Partition Chromatography with the stationary phase containing a separator, Di(2-ethylhexyl) phosphoric acid (D2EHPA), are examined. The separation trends of these heavier rare earth metal ions were found to be almost as expected from the observations reported for the lighter rare earth metal ions. And the separator is also useful for mutual separation of these heavier rare earth metal ions.