Abstract
The results of measurements of Krypton-85 (85Kr) concentrations in the ground-level air of Prague between 1983 and 1992 are presented and time-related changes analysed. The long-term trend in activity level of 85Kr has been steadily increasing with a growth rate of 0.04 Bq.m−3 (STP) per year. Some peaks of 85Kr activity were observed due to the influence of undispersed radioactive plumes coming from distant sources. Short-term variations within a typical range of concentrations from 0.61 to 1.25 Bq.m−3 (STP) were found to be seasonally dependent, with the maximum occurring in spring.
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Wilhelmová, L., Tomášek, M. & Štukheil, K. Monitoring of krypton-85 activity in the atmosphere around Prague. Environ Monit Assess 34, 145–149 (1995). https://doi.org/10.1007/BF00546028
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DOI: https://doi.org/10.1007/BF00546028