Reconstruction And Forecasting Of Human
Internal Dose For Cases Of Accidental Pollution
With Long-living Radionuclides
Author(s)
A. P. Kravets
Abstract
A three–module ecological model for assessment of radiological consequences
(EMARC) of accidental fallout was developed to estimate the internal dose. The
model was adapted for ecological and economic conditions of Ukraine after the
Chernobyl accident. The model takes into account the main natural mechanisms
of changes in level of agricultural production pollution such as transformation of
bioavailability of the radionuclide and the long-term forecasting of dynamics of
soil-plant transfer factor, features of migration of 137Cs and 90Sr in the system
\“soil–plant” and natural clean-up of soil, inclusion and migration of
radionuclides in the food chains and its entrance into human organisms.
Estimations were conducted for agrocenoses of Northern Ukraine with six soil
types. EMARC allows the influence of intensity on soil-plant transfer of
radionuclide to be estimated for any type of environmental characteristics,
pollution of food chains and internal dose formation. This model may be used for
retrospective assessment as well as for prognosis.
Keywords: environmental pollution, exposure, risk assessment.
1 Introduction
The estimation of radiation accident consequences includes at least two stages:
identical estimations of dose for different population groups and the estimation
of risk coefficient (Gy-1) values for areas of different dose.
Therefore one of the main problems of the current post accidental period of
the Chernobyl accident is improving the accuracy of dose estimations, closing
the gap between calculation data and direct estimations. Taking into account
Keywords
environmental pollution, exposure, risk assessment.
Related Book
Other papers in this volume
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