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Investigations on the caesium-137 household of Lake Lugano, Switzerland

  • Part 1
  • Radionuclides in the Environment, Radioecology
  • Published:
Czechoslovak Journal of Physics Aims and scope

Abstract

Sediment samples were taken from different basins of Lake Lugano, and the caesium 137 inventory and vertical distribution was measured. In all samples, a distinct maximum at a depth of 5 to 10 cm can be attributed to the 1986 Chernobyl fallout. Relatively high specific activities of 500 to 1,000 Bq/kg can still be found in the top layer of the sediment. 5 step extraction experiments on sediment samples resulted in percentages of extracted caesium which are a factor of 2 to 8 higher than those of Lake Constance, where caesium is strongly bound to illites. The activity concentration of the water of 3 main tributaries, of the outflow and of the lake water was in the order of 5 to 10 mBq/l.

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Authors and Affiliations

  1. FH Ravensburg Weingarten, University of Applied Sciences, Center of Radioecology, P. O. Box 1261, D 88241, Weingarten, Germany

    J. Drissner, E. Klemt, T. Klenk, R. Miller & G. Zibold

  2. Sektion Sicherheitsfragen, Zentrale Analytik und Radiochemie, GR, AC Laboratorium Spiez, CH 3700, Spiez, Switzerland

    M. Burger & A. Jakob

Authors
  1. J. Drissner
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  2. E. Klemt
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  3. T. Klenk
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  4. R. Miller
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  5. G. Zibold
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  6. M. Burger
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  7. A. Jakob
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Drissner, J., Klemt, E., Klenk, T. et al. Investigations on the caesium-137 household of Lake Lugano, Switzerland. Czech J Phys 49 (Suppl 1), 133–139 (1999). https://doi.org/10.1007/s10582-999-0018-3

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  • DOI: https://doi.org/10.1007/s10582-999-0018-3

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