Solvent extraction studies using phosphonic acid monoesters

III. Extraction and determination of stability constants of Eu(III) ethyl hydrogen benzyl and ethyl hydrogen benzoyl phosphonates in n-hexane
  • A. M. El Atrash
  • E. A. Saad
  • M. S. A. Hamza


The extraction of radioactive152–154Eu by ethyl hydrogen benzyl phosphonate (HEBP) and ethyl hydrogen benzoyl phosphonate (HEBOP) in n-hexane from an aqueous solution of ionic strength 0.1M (Na+, HClO4) has been investigated at different temperatures and the thermodynamic functions evaluated. HEBOP was found to be more efficient than HEBP as extractant. In addition, the stability constant of the extracted complexes were determined.


Aqueous Solution Ethyl Ionic Strength Benzyl Solvent Extraction 
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Copyright information

© Akadémiai Kiadó 1991

Authors and Affiliations

  • A. M. El Atrash
    • 1
  • E. A. Saad
    • 1
  • M. S. A. Hamza
    • 1
  1. 1.Chemistry Department, Faculty of ScienceAin Shams UniversityCairo(Egypt)

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