Journal of Radioanalytical Chemistry

, Volume 21, Issue 1, pp 151–155 | Cite as

A generator for preparation of carrier-free224Ra

  • F. Šebesta
  • J. Starý
Solvent Extraction Chemistry


The construction of a dynamic generator for the separation of carrier-free224Ra is described. The mother228Th was extracted on the top of the column with di-(2-ethylhexyl)phosphoric acid on hydrophobized Chromosorb W DMCS. The function of the generator was checked during 6 months by measuring the decontamination of224Ra from228Th. Simultaneously the yield of224Ra was determined as a function of the HCl concentration and of the means of milking. The best results were obtained with 0.01–0.1M HCl; the yield was about 75% of the theoretical value, and the224Ra contained less than 0.01% of228Th.


Thorium Kieselguhr Separation Factor Glass Wool Dynamic Generator 
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Copyright information

© Akadémiai Kiadó 1974

Authors and Affiliations

  • F. Šebesta
    • 1
  • J. Starý
    • 1
  1. 1.Department of Nuclear ChemistryTechnical University of PraguePragueCzechoslovakia

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