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The modified cyrogenic adsorption method for the laboratory separation of85Kr from the atmosphere

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Abstract

The method for laboratory separation of85Kr from the atmosphere based on cryogenic adsorption technique has been developed. The physical parameters of the separation equipment have been chosen with respect to the properties of scintillation crystal CaF2/Eu/ used as a detector of85Kr. The apparatus contains dry-ice, silicagel and molecular sieve traps for the removal of H2O and CO2. The activated charcoal columns are used for concentration and preparation of krypton sample. The separation technique is supplemented by gas-chromatographic determination of total amount of separated krypton. The apparatus enables processing of up to 20 m3 of air with the krypton yield about 80%. The relative errors of the determination of the concentration of85Kr in the air by elaborated method is about 5%.

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Authors and Affiliations

  1. Institute of Radiation Dosimetry, Czechoslovak Academy of Sciences, 180 86, Prague 8, Czechoslovakia

    L. Wilhelmová, M. Tomášek & Z. Dvořák

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  1. L. Wilhelmová
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  2. M. Tomášek
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  3. Z. Dvořák
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Wilhelmová, L., Tomášek, M. & Dvořák, Z. The modified cyrogenic adsorption method for the laboratory separation of85Kr from the atmosphere. Journal of Radioanalytical and Nuclear Chemistry Letters 95, 45–54 (1985). https://doi.org/10.1007/BF02166242

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  • DOI: https://doi.org/10.1007/BF02166242

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