ASSESSMENT OF THE NATURAL RADIONUCLIDE COMPOSITION IN THE “WATER – SEDIMENTS – PLANTS|” SYSTEM OF SMALL RIVERS OF EASTERN KAZAKHSTAN

The article presents the results on content of natural radionuclides in various environmental objects (water, sediments, plants) collected from the ecosystem of nine small rivers in Ridder city. It has been revealed that in most cases the content of radionuclides does not exceed the standard values for radiation safety. The activity effective concentration for sediments and plants is calculated. The average value of the activity effective concentration of natural radionuclides in sediments was 107 Bq/kg, and in plants – 73 Bq/kg, which is lower than the value regulated by radiation safety standards, exceeding which may have a negative impact on living organisms.

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