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Citation: Yue Shantang, Sun Ducheng, Ma Genxiang, Li Deqian. Extraction Mechanism of Sr(Ⅱ) with HEH/EHP by Two-Phase Titration Method[J]. Chinese Journal of Applied Chemistry, ;1998, 15(1): 89-91. shu

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

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 AppliedChemistry, Chinese Academy of Sciences, Changchun 130022

Received Date: 19 June 1997
Revised Date: 10 September 1997

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 has been determined to be SrA₂ · 3.9HA. The extraction equilibrium constant calculated was logK_ex=-5.42.
- ethylhexylphosphonic acid mono-ethylhexyl ester,
- strontium,
- extraction,
- mechanism,
- two-phase titration method
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