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%.
Similar content being viewed by others
References
P. Pannetier, Report CEA-R-3591, 1968.
G.J. Ferber, K. Telegadas, L. Heffter, M.E. Smith,Atm. Environ. 11/1977/379.
A.N. Gudkov, B.I. Ivanov, I.L. Karol, I.V. Kolobashkin, O.I. Lejpunskij, I.V. Nekrasov, V.P. Novitschkov, Ju. A. Serbulov, N.P. Ushakova, Proc. Int. Sem. Phys. Aspects of Atm. Contamination, Vilnius 1976.
D. Butkus, B. Styro, K. Zemkajus, The 2nd Sci. and Techn. CMEA Conf. on Rad. Prot. of Nucl. Plant Operation, Vilnius 1982.
N.I. Sax, R.R. Reeves, J.D. Denny,Radiolog. Health Data and Reports, 10/1969/99.
D.L. Stevenson, F.B. Johns, Rapid Methods for Measuring Radioact. in the Environment, Proc. IAEA Symposium, Neuherberg, 1971, IAEA Vienna, 1971, p. 157.
L.S. Cummings, R.L. Stearin, R.C. Porter, Rapid Methods for Measuring Radioact. in the Environment, Proc. IAEA Symposium, Neuherberg, 1971, IAEA, Vienna 1971, p. 163.
T. Wardaszko, J. Nidecka,Nukleonika, 23/1978/871.
H. Stockburger, A. Sittkus,Z. Naturforsch., 3a/1975/959.
I.C. Downing, Symp. on the Determination of Radionuclides in Environ. and Biol. Materials, London, 1978.
R.E. Jaquish, F.B. Johns, Proc. 2nd Conf. on Natural Radiation Environment, Huston, 1972, p. 833.
S. Cimbák, M. Chudy, P. Povinec, Proc. 2nd Int. Conf. Low Radioactivities ′80, High Tatras, 1980, p. 351.
T. Okai, Y. Takashima, N. Shiraishi, N. Matsuoka,J. Radioanal. Nucl. Chem. 81/1984/1961.
Z. Dvorák, K. Stukheil, M. Tomásek, L. Wilhelmová, Report UDZ CSAV 156/84, 1984.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
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
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02166242