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Abstract

The processes of wet deposition and dry deposition are discussed and the underlying scientific backgrounds briefly outlined. Contaminated media which may act as sources are discussed. Nuclides already deposited on the surface can become airborne again from these media by a process called resuspension which may be of natural as anthropogenic origin. These questions are addressed from the experimental point of view and the results obtained in field tests described. More theoretical aspects of the spread of contamination are dealt with in order to provide a basis for interpretation of the experimental results. A prognostic model is developed which casts all previous findings into a parameterized scheme which allows the calculation of airborne nuclide size distributions, activity concentrations, and deposition flux densities for various source types and scenarios. Inhalation doses due to various nuclides are assessed for the general population and special high risk groups. Recommendations with respect to various scenarios and future research are made. A series of annexes discussed technically or scientifically important questions which are necessary for understanding the whole project.

Additional information

Authors: HOLLÄNDER W, Fraunhofer Institut of Toxicology and Aerosol Research, Hannover (DE);GARGER E (EDITORS), UAAS, Institute of Radioecology, Kiev (UA)
Bibliographic Reference: EUR 16527 EN (1996) 149PP., FS, free of charge
Availability: Available from the European Commission, Dr Anna Karaoglou, DG XII-F-6, 200 rue de la Loi, B-1049 Bruxelles (BE)
ISBN: ISBN 92-827-5192-9
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