Av. Konoplev et al., INFLUENCE OF AGRICULTURAL COUNTERMEASURES ON THE RATIO OF DIFFERENT CHEMICAL FORMS OF RADIONUCLIDES IN SOIL AND SOIL SOLUTION, Science of the total environment, 137(1-3), 1993, pp. 147-162
The bioavailability of radionuclides derived from the Chernobyl accide
nt is discussed in terms of their speciation in soils. A scheme repres
enting transformation processes of different chemical forms of these r
adionuclides in soil and soil solution is proposed. The rate constants
of the main transformation processes were obtained experimentally. Va
rious agrochemical countermeasures are evaluated in terms of their inf
luence on the ratio of different radionuclide forms in soil and soil s
olution. The influence of soil characteristics on the potential effect
iveness of countermeasures is discussed. Practically all agrochemical
countermeasures currently in use have positive and negative effects. T
he most effective countermeasures for radiocaesium and radiostrontium
were liming of the soil and the application of potassium containing fe
rtilisers at elevated rates.