Abstract
A portable apparatus was developed for the rapid collection, separation and counting of krypton-85 in the environmental air samples. The apparatus consists of a molecular sieve trap for the elimination of H2O and CO2, a charcoal trap for the collection of krypton, a chromatographic column for the isolation of krypton in the air sample and a vial for the dissolution of krypton in the scintillation solution. With this apparatus, krypton can be collected from half a cubic meter of air with 94% recovery in about 3 hrs. The measurements of krypton-85 have been done several times in Fukuoka area between the periods Jan. 30, 1981 and Dec. 9, 1981. And then, the krypton-85 concentration was found to be approximately 21 pCi/m3 air. The results were compared with those obtained by foregin investigators.
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Okai, T., Takashima, Y., Shiraishi, N. et al. Measurement of krypton-85 in the atmosphere with a portable apparatus. Journal of Radioanalytical and Nuclear Chemistry, Articles 81, 161–165 (1984). https://doi.org/10.1007/BF02132931
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DOI: https://doi.org/10.1007/BF02132931