Hideaki Asai’s research while affiliated with Kyoto Institute of Technology and other places

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Publications (2)


Liquid Membrane Transport of Heavier Rare Earth Metal Ions Based on CPC Results with Di(2-Ethylhexyl) Phosphoric Acid
  • Article

November 1990

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5 Reads

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3 Citations

Journal of Liquid Chromatography

Takeo Araki

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Hideaki Asai

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[...]

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Hiroshi Narita

The behaviors of heavier rare earth metal ions in bulk liquid membrane transport systems were examined for Gd3+, Tb3+, Dy3, Ho3+, Er3+, Tm3, Yb3+ and Lu3+ ions. The liquid membrane transport system was constructed by aq. HCl/CHCl3 containing Di (2-ethylhexyl) phosphoric acid/aq. HCl. The optimum concentration of HCl in the aqueous phase with respect to the rate of transport for these ions increased with the atomic number of the rare earth elements. This trend of transport behaviors was on the same line observed for lighter rare earth ions in the preceding work. Difference in the rate of transport can be used for selective liquid membrane transport of several sets of combination with these ions.


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

November 1990

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5 Reads

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9 Citations

Journal of Liquid Chromatography

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.