The content of 137Cs in Suillus luteus in the territories with different levels of radionuclides pollution of soil (Kiev region)

Abstract

Accumulation of 137Cs by Suillus luteus passed in two stages. Since 1986 up to the middle of 90th the annual increase in levels of specific activity of radiocesium was marked; at the second stage (from the middle of 90th on present time) there is a gradual decrease in the contents of 137Cs in S. luteus. In the tests selected in the autumn of 1986 on ranges of Kiev region, the contents of 137Cs varied within the limits of 80 - 800 Bq/kg of fresh weight. In 10 years after accident the disorder of specific activity values of 137Cs in "dirty" and rather "pure" territories has increased up to 2000 times. At the second stage speed of decrease in the contents of 137Cs in S. luteus is differed for the territories with various level of soil pollution.