Mechanism of the solvent extraction of pertechnetate with tetraphenylarsonium chloride

  • T. Omori
  • K. Asahina
  • H. Suganuma


Based on the fundamental parameters governing the distribution equilibrium of tetraphenylarsonium chloride (TPAC) between then-hexane-chloroform and aqueous solutions, the extraction mechanism of pertechnetate with TPAC has been systematically investigated. By the analysis of a relation of the distribution ratio of pertechnetate and the hydrogen ion concentration, the dissociation constant of pertechnetic acid was determined to beKa=2.09±0.18 at 25 °C.


Hydrogen Chloride Physical Chemistry Aqueous Solution Inorganic Chemistry 
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Copyright information

© Akadémiai Kiadó 1995

Authors and Affiliations

  • T. Omori
    • 1
  • K. Asahina
    • 1
  • H. Suganuma
    • 1
  1. 1.Radiochemistry Research LaboratoryShizuoka UniversityShizuokaJapan

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