PREPARATION OF CARRIER-FREE Ra-228 (MsTh$sub 1$) AND Ac-228 (MsTh$sub 2$) BY ION EXCHANGE

Title: PREPARATION OF CARRIER-FREE Ra-228 (MsTh$sub 1$) AND Ac-228 (MsTh$sub 2$) BY ION EXCHANGE (in Hungarian)

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Abstract

An ion-exchange process was developed for the production of carrier-free Ra/sup 228/ and Ac/sup 228/ . The Ra/sup 228/ was produced from old Th(NO/sub 3/ )/sub 4/. After a tributyl phosphate extraction of about 95% of the Th, the residuals were separated from the Ra/sup 228/ on a Dowex 50 x 8 cation-exchange column in 0.5M NH/sub 4/-lactate solution. In the cation-exchange column, the Ra/ sup 228/ was bound. Rare earth impurities were removed from the column through elution by 0.7M NH/sub 4/-lactate The Ra/sup 228/ was eluated by 3M HNO/sub 3/ and after the solution was concentrated by evaporation, it was transferred through a 0.5 ml 0.05N HCl solution on a 0.3 x 8 cm cation-exchange column filled with Dowex 50 x 12 400 mesh resin. The Ac/sup 228/ can be regularly eluted from the column by 0.65M NH/sub 4/-lactate, since under such conditions the adsorption zone of the Ra/sup 228/ is shifting at a very low rate and the decomposition products Th/sup 228/, Pb/sup 212/, and Bi/sup 212/ are eluated in precedence to the Ac/sup228/. After acidification, the NH/sub 4/-lactate solution containing the Ac/sup 228/ was carried over to a cation-exchange column from which first the Pb/sup 212/more »« less

Authors:: Bruecher, E

Publication Date:: 1962-12-01

Research Org.:: Originating Research Org. not identified

OSTI Identifier:: 4722870

NSA Number:: NSA-17-020073

Resource Type:: Journal Article

Journal Name:: Mag. Tud. Akad. At. Kut. Int. (Debrecen), Kozlemen

Additional Journal Information:: Journal Volume: Vol: 4; Other Information: Orig. Receipt Date: 31-DEC-63

Country of Publication:: Country unknown/Code not available

Language:: Hungarian

Subject:: CHEMISTRY; ACTINIUM 228; AMMONIUM COMPOUNDS; BISMUTH 212; BUTYL PHOSPHATES; BUTYL RADICALS; DECOMPOSITION; DOWEX; EVAPORATION; HYDROCHLORIC ACID; IMPURITIES; ION EXCHANGE; ION EXCHANGE MATERIALS; LACTIC ACID; LEAD 212; NITRIC ACID; ORGANIC ACIDS; PREPARATION; RADIUM 228; RARE EARTHS; SOLUTIONS; SOLVENT EXTRACTION; THORIUM 228; THORIUM NITRATES

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                    Bruecher, E. PREPARATION OF CARRIER-FREE Ra-228 (MsTh$sub 1$) AND Ac-228 (MsTh$sub 2$) BY ION EXCHANGE.  Country unknown/Code not available: N. p., 1962. 
        Web.

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                    Bruecher, E. PREPARATION OF CARRIER-FREE Ra-228 (MsTh$sub 1$) AND Ac-228 (MsTh$sub 2$) BY ION EXCHANGE.  Country unknown/Code not available.

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                    Bruecher, E. Sat .  
        "PREPARATION OF CARRIER-FREE Ra-228 (MsTh$sub 1$) AND Ac-228 (MsTh$sub 2$) BY ION EXCHANGE".  Country unknown/Code not available.

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@article{osti_4722870,

  title        = {PREPARATION OF CARRIER-FREE Ra-228 (MsTh$sub 1$) AND Ac-228 (MsTh$sub 2$) BY ION EXCHANGE},

  author       = {Bruecher, E},

  abstractNote = {An ion-exchange process was developed for the production of carrier-free Ra/sup 228/ and Ac/sup 228/ . The Ra/sup 228/ was produced from old Th(NO/sub 3/ )/sub 4/. After a tributyl phosphate extraction of about 95% of the Th, the residuals were separated from the Ra/sup 228/ on a Dowex 50 x 8 cation-exchange column in 0.5M NH/sub 4/-lactate solution. In the cation-exchange column, the Ra/ sup 228/ was bound. Rare earth impurities were removed from the column through elution by 0.7M NH/sub 4/-lactate The Ra/sup 228/ was eluated by 3M HNO/sub 3/ and after the solution was concentrated by evaporation, it was transferred through a 0.5 ml 0.05N HCl solution on a 0.3 x 8 cm cation-exchange column filled with Dowex 50 x 12 400 mesh resin. The Ac/sup 228/ can be regularly eluted from the column by 0.65M NH/sub 4/-lactate, since under such conditions the adsorption zone of the Ra/sup 228/ is shifting at a very low rate and the decomposition products Th/sup 228/, Pb/sup 212/, and Bi/sup 212/ are eluated in precedence to the Ac/sup228/. After acidification, the NH/sub 4/-lactate solution containing the Ac/sup 228/ was carried over to a cation-exchange column from which first the Pb/sup 212/ and B/sup 212/ were eluted through 2N HCl, and then the Ac/sup 228/ was eluted through 7N HCl. The radioactive contamination of Ac/sup 228/ amounts to 0.2%, and its yield is 70 to 80% related to the initial Ac/sup 228/ content of Th(NO/sub 3/)/sub 4/. (auth)},

  doi          = {},

  url          = {https://www.osti.gov/biblio/4722870},
  journal      = {Mag. Tud. Akad. At. Kut. Int. (Debrecen), Kozlemen},
number       = ,

  volume       = Vol: 4,

  place        = {Country unknown/Code not available},

  year         = {1962},

  month        = {12}

}

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