DYNAMICS OF CONTENTS AND ORGANIC FORMS OF RADIONUCLIDE COMPOUNDS IN THE LIQUID-PHASE OF FOREST SOILS IN THE ZONE OF CONTAMINATION FROM THE CHERNOBYL NUCLEAR-POWER-PLANT

In the profile of forest soils in a 30-km zone around the Chernobyl nu clear power plant (NPP), in areas characterized by different positions in relation to the source of emission, the authors determined the rel ative contents of long-lived radionuclides Ru-106, Cs-134,137 Cs, and Ce-144 in soil solutions (as of 1987). On the example of Cs-137, they consider the dynamics (1987-1990) of relative contents and forms in wh ich the radionuclide is found in the liquid phase of soils in the zone of radioactive contamination from the Chernobyl NPP.