Chinese Journal of Applied Chemistry ›› 1998, Vol. 0 ›› Issue (1): 89-91.

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Extraction Mechanism of Sr(Ⅱ) with HEH/EHP by Two-Phase Titration Method

Yue Shantang1, Sun Ducheng2   

  1. 1. Department of Chemistry, Hubei Normal University, Wuhan;
    2. Department Of Chemistry, Xinjiang Univeristy, Urumchi;
    3. Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022
  • Received:1997-06-19 Revised:1997-09-10 Published:1998-02-10 Online:1998-02-10

Abstract: The extraction mechanism of Sr(Ⅱ) from HNO3 medium with HEH/EHP in n-oc-tane has been investigated by a two-phase titration method and the extracted complex hasbeen determined to be SrA2· 3.9HA.The extraction equilibrium constant calculated was logKex = -5.42.

Key words: ethylhexylphosphonic acid mono-ethylhexyl ester, strontium, extraction, mechanism, two-phase titration method