Hostname: page-component-586b7cd67f-g8jcs Total loading time: 0 Render date: 2024-11-23T09:11:24.010Z Has data issue: false hasContentIssue false
  • English
  • Français

The validation of the dynamic food chain model BURN-POSEIDON on Cs-137 and Sr-90 data of the Dnieper-Bug estuary, Ukraine

Published online by Cambridge University Press:  09 January 2012

J. Barescut ,
D. Lariviere ,
T. Stocki ,
R. Heling  and
R. Bezhenar
R. Heling
Affiliation:
Nuclear Research and consultancy Group (NRG) P.O. Box 9034, 6800 ES Arnhem, The Netherlands
R. Bezhenar
Affiliation:
Ukrainian Centre of Environmental and Water Projects, Kiev, Prospect Glushkova 42, Kiev, 03187, Ukraine
Get access

Abstract

The uptake of radioceasium and radiostrontium in biota in dose assessment models is mostly estimated on the basis of Concentration Factors (CF). For accidental releases, the dynamical foodweb model BURN has been implemented in the coastal model POSEIDON (part of the Decision Support System RODOS). BURN can be applied on water bodies with different salinity levels, since in the model the uptake of radioceasium and radiostrontium in phytoplankton is governed by potassium and calcium in the water, which are calculated via the easier-to-obtain parameter salinity. Recently a dataset on radiocaesium and radiostrontium has been collected for various aquatic organisms in the Dnieper-Bug Estuary (DBE) in Ukraine, which enabled model validation with BURN. Considering the limitation of compartment models and the fact BURN is a predictive model, with fixed model parameters, the model results are within a reasonable range with the measurement data. Besides comparison with measurement data, the model calculations were also used to derive values for CF and compared with literature, which gave reasonable results for Cs-137 in fish and molluscs. For Sr-90 however, the calculated values exceeded the levels given in literature, since equilibrium between radionuclides in biota and water is not reached. Longer time periods for the radionuclide flux into the DBE, both from the Dnieper and the Black Sea are required to obtain high quality model results for the years after 1989.

Type
Research Article
Information
Radioprotection , Volume 46 , Issue 6: ICRER 2011 – International Conference on Radioecology & Environmental Radioactivity: Environment & Nuclear Renaissance , 2011 , pp. S561 - S566
Copyright
© Owned by the authors, published by EDP Sciences, 2011

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

A.G Laptev. DBE-06. The Dnieper-South Bug Biota Scenario Description. Ukrainian Scientific & Research Institute for Hydro-meteorology, Department of Monitoring of Radioactivity in the Environment. With permission of the IAEA (D. Telleria). 2011.
Veleva, B., Koziy, L., Yushchenko, S., Maderich, V., Mungov, G. Radioprotection 37 (2002). C1-827-C1-832.
Heling R. Koziy L. Bulgakov V. Radioprotection 37 (2002) C1-833-C1-838.
Heling, R, Bezhenar R. Radioprotection 44 (2009) 7410-746.
N. Margveleshvilii, V. Maderich, M. Zheleznyak. J. of Env. Rad. 43 (1999) 1570-171.
Coughtrey P.J., Thorne M.C. Radionuclide Distribution and transport in Terrestrial and Aquatic Ecosystems, A Critical Review of Data, Vol 1. A.A Balkema, Amsterdam, 1983.
Technical Report Series, no. 422. Sediment Distribution Coefficients and Concentration Factors for Biota in the Marine Environment. International Atomic Energy Agency, Vienna, 2004.