Extraction-spectrophotometric determination of uranium by Arsenazo III encapsulated in liquid membrane

  • F. Macášek
  • R. Kopunec


Uranium is extracted by a water-in-oil emulsion consisted from 0.01M 8-hydroxyquinoline /HOx/ in cyclohexane and aqueous solution or Arsenazo III and glycine. Analyzed solution is adjusted to 0.02M 1,2-diaminocyclohexane-N,N,N′,N′-tetraacetic acid /DCTA/ and pH 7.5±0.1. Preconcentration factor of about 400 can be achieved and when the uranium concentration in the outer solution is above 5 μ−3 /5 ppb/ its spectrophotometric determination in the inner solution of the double emulsion system is possible. Thorium practically does not interfere at the ratio Th:U=20:1.


Physical Chemistry Aqueous Solution Inorganic Chemistry Uranium Glycine 
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Copyright information

© Akadémiai Kiadó 1984

Authors and Affiliations

  • F. Macášek
    • 1
  • R. Kopunec
    • 1
  1. 1.Department of Nuclear ChemistryComenius UniversityBratislavaCzechoslovakia

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