Aerosol radioactivity record in Bratislava/Slovakia following the Fukushima accident - A comparison with global fallout and the Chernobyl accident

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• 作者：P.P. Povinec ; I. Sykora ; K. Holy ; M. Gera ; A. Kov¨¢?ik ; L. Brest'¨¢kov¨¢
• 关键词：Atmospheric radioactivity ; Aerosols ; Global fallout ; Radionulides ; Fukushima accident
• 刊名：Journal of Environmental Radioactivity
• 出版年：2012
• 出版时间：December, 2012
• 年：2012
• 卷：114
• 期：Complete
• 页码：81-88
• 全文大小：577 K

文摘

Results of radioactivity measurements in Bratislava aerosols following the Fukushima accident showed that at least three radioactive plumes arrived to Bratislava as indicated by ¹³¹I/¹³⁷Cs activity ratios. When compared with the Chernobyl results available for the Bratislava station, the Fukushima radionuclide levels were almost five orders of magnitude lower, with the maximum values for ¹³¹I and ¹³⁷Cs of 0.5 and 0.07?mBq/m³, respectively. The ¹³¹I and ¹³⁷Cs vs. ⁷Be aerosol activity records showed that the increases in ¹³¹I and ¹³⁷Cs activity concentrations were accompanied by ⁷Be increases, indicating that both the horizontal and vertical transports of radionuclides were responsible for observed radionuclide concentrations. The ¹³⁴Cs/¹³⁷Cs activity ratio was close to 1, as has also been reported by other investigators.