Radioecological monitoring of transboundary rivers of the Central Asian Region

This article presents the results of the investigation on radionuclide contamination, physical and chemical forms of plutonium in soil samples of various zones at the territory of the Semipalatinsk Nuclear Test Site (SNTS), and the analysis of these results in connection with characteristics of the performed tests. There was revealed the character of various sites differing by concentration level, 239+240 Pu to 241 Am concentration ratios, presence forms, area distribution, and magnetic fractions of transuranic radionuclides.