Journal of Radioanalytical and Nuclear Chemistry

, Volume 201, Issue 4, pp 281–292 | Cite as

Liquid-liquid extraction of uranium(VI) with cryptand-222 and Eosin as the counter ion

  • Viji Jacob Mathew
  • S. M. Khopkar
Article
Received:
Accepted:

Abstract

Uranium(VI), (5 μg) was quantitatively extracted at pH 6.0 with 0.01M cryptan-222 in chloroform in the presence of 0.05MM Eosin as the counter ion. The metal from the organic phase was stripped with 0.0M perchloric acid. Uranium(VI) from the aqueous phase was determined spectrophotometrically at 430 nm as its complex with oxine. The extraction was quantitative between pH 5.5–6.5. Nitrobenzene, chloroform and dichloromethane were the best diluents. The optimum extractant concentration was 0.01M, while that of Eosin was 0.005M. Except for perchloric acid (0.01M), other acids could not strip uranium. Uranium was separated from manganese, cadmium, lead, thallium and nickel, etc., in the multicomponent mixtures. The relative standard deviation was ±1%.

Keywords

Nickel Cadmium Manganese Chloroform Uranium 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© Akadémiai Kiadó 1995

Authors and Affiliations

  • Viji Jacob Mathew
    • 1
  • S. M. Khopkar
    • 1
  1. 1.Department of Chemical TechnologyUniversity of BombayBombayIndia

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