Journal of Radioanalytical and Nuclear Chemistry

, Volume 293, Issue 2, pp 595–599 | Cite as

Resuspension processes controll variations of 137Cs activity concentrations in the ground-level air

  • I. Sýkora
  • P. P. Povinec
  • L. Brest’áková
  • M. Florek
  • K. Holý
  • J. Masarik
Article
First Online:
Received:

Abstract

The 137Cs activity concentration in the surface air between 1977 and 2007 was decreasing with an ecological half-life of 3.4 years, however, during 2007–2010 the yearly averaged 137Cs activity concentrations were almost constant. The increased atmospheric 137Cs and 40K levels observed during the winter may be due to surface soil resuspension and radionuclide transport by winds, particularly from open agricultural areas, as confirmed by high correlation coefficient between 137Cs and 40K atmospheric levels (R = 0.84), and similar 137Cs/40K activity ratios in aerosols (0.07) and soils (0.05).

Keywords

Atmospheric radioactivity Aerosols Global fallout Radionuclides Soil resuspension 
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Notes

Acknowledgments

The authors are indebted to M. V. Frontasyeva and E. Steinnes for valuable discussions. This study was supported by the EU Research and Development Operational Program funded by the ERDF (project n. 26240220004), the APVV project n. 0420-10, and the VEGA project n. 1/0455/12.

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2012

Authors and Affiliations

  • I. Sýkora
    • 1
  • P. P. Povinec
    • 1
  • L. Brest’áková
    • 1
  • M. Florek
    • 1
  • K. Holý
    • 1
  • J. Masarik
    • 1
  1. 1.Faculty of Mathematics, Physics and Informatics, Department of Nuclear Physics and BiophysicsComenius UniversityBratislavaSlovakia

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