title: [Comparative evaluation of 238U and 226Ra absorption by herbaceous and woody species under conditions of technogenic pollution].
abstract: The results of studies on uranium and radium distribution in soil and vegetation at the territory contaminated by wastes of radium plant in 1930-1950 are presented. Specific activities of 226Ra and 238U in soil varied as 0.01-200 and 0.004-7.58 Bq/g per ash respectively. The radionuclides are mainly concentrated in the upper layer of soil profile. In the vegetation concentrations of 226Ra and 238U varied as 0.64-132 0.001-0.02 Bq/g per ash respectively. Among the woody species studied, Betula pubescens and Sorbus aucuparia are characterized by the highest absorption of radionuclides. For all plants studied a negative linear dependence is shown between logarithm of TF (TF = [226Ra, 238U in plant, Bq/g per ash]/[226Ra, 238U in soil, Bq/g per ash]) and logarithm of 226Ra and 238U concentrations in soil. The findings obtained can be used in modeling of biological absorption in radioecological investigations.
authors: L M
authors: LM
authors: Noskova
authors: I I
authors: II
authors: Shuktomova
mesh_terms: D006109:Poaceae / Q000737:chemistry* / Q000254:growth & development / Q000528:radiation effects; D011834:Radiation Monitoring / Q000379:methods* / Q000706:statistics & numerical data; D011868:Radioisotopes; D011883:Radium / Q000032:analysis*; D012426:Russia; D012990:Soil Pollutants, Radioactive / Q000032:analysis*; D014197:Trees / Q000737:chemistry* / Q000254:growth & development / Q000528:radiation effects; D014501:Uranium / Q000032:analysis*
chemical_list: D011868:Radioisotopes; D012990:Soil Pollutants, Radioactive; D014501:Uranium; D011883:Radium