Gamtiniai radionuklidai vandens telkinių dugno grunte

Abstract

There were measured the concentrations of natural radionuclides 226Ra, 214Pb, 214Bi, 228AC, 212Pb, 208Tl, 40 K in this work. The samples were taken from the lakes situated in Vilnius city. It was estimated that in the bottom soil of the water the biggest amounts of the natural radionuclides are 40K (its specific activity on the average is 200 Bq/kg). The positive correlation among all natural radioisotpes was estimated. Big correlation coeficients of the concatenation (around 0,8) is among natural macrobiotic radionuclides 226Ra and 40K.