Vertical distribution of anthropogenic radionuclides in cores from contaminated floodplains of the Yenisey River

Peculiarities of distribution of anthropogenic radionuclides in soils and soil fractions of conjugated floodplain landscapes of the Yenisey River

“…Radioactive contamination in vicinity of the discharge point is characterized by high variation [2][3][4]. For example, the coefficient of variation (CV) for 60 Cs-137 activity in the soil profiles in the middle reaches of the Yenisey River were in the range 23-3770 Bq/kg (dry weight), local radionuclide contamination was found as far downstream as the Island of Tungussky.…”

The international conference on radioecology and environmental radioactivity

“…Having considered the application and utility of established screening benchmarks, the authors progress to consider the potential utility, as an aid for decision makers, of a second, higher, benchmark which identifies when the risk of impact is 'significant' or 'severe'. Standring et al (2009) provide an overview of activity concentrations of radiocaesium and isotopes of plutonium downstream of the Krasnoyarsk-26 nuclear facility on the Yenisey River. The influence of such factors as grain-size and distance downstream from the source on activity concentrations are explored and some insight into the behaviour of radionuclides in this system are given.…”

Granulometric and mineralogic investigation for explanation of radionuclide accumulation in different size fractions of the Yenisey floodplain soils

“…Studies were also conducted to establish the extent of contamination in terms of the distance of radionuclide migration downstream from the source. Many studies were devoted to measurements and experimental evaluations of radionuclides in soils and sediments at different locations on the Yenisey floodplain (Bolsunovsky et al, 2002;Kuznetsov et al, 1994;Nosov and Martynova, 1996;Nosov et al, 1993;Standring et al, 2009;Sukhorukov et al, 2004;Vakulovsky et al, 1995). It was shown that radionuclides from Krasnoyarsk could migrate as far as the Yenisey delta and estuary but their distribution in floodplain areas was significantly heterogenous due to lithology, geomorphology, vegetation of local landscapes (Linnik et al, 2000) and the hydrological regime in the periods of radionuclide discharges (Linnik et al, 2004a(Linnik et al, , 2004b(Linnik et al, , 2005Nosov et al, 1993).…”