Patterns and inventories of radioactive contamination of island sites of the Yenisey River, Russia

Linnik, Vitaly; Brown, Justin; Dowdall, M.; Potapov, V. N.; Носов, А. В.; Сурков, В.В.; Соколов, А. В.; Wright, S.M.; Borghuis, S

doi:10.1016/j.jenvrad.2005.11.011

Cited by 22 publications

(13 citation statements)

References 13 publications

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“…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.…”

Section: Resultsmentioning

confidence: 99%

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

et al. 2011

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Section: Resultsmentioning

confidence: 99%

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

et al. 2011

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“…1). The sampling sites were selected at different elevations on the floodplain after a preliminary field radiometric survey indicating areas of maximum radionuclide contamination (Linnik et al 2005(Linnik et al , 2006. Samples were collected to a depth of 40-50 cm and divided into different increments according to the soil master horizons and profile lithology.…”

Section: Study Area and Methodsmentioning

confidence: 99%

“…This has been simulated and experimentally proven by Nosov et al (2010). Apart from physical and chemical sorption, a characteristic deposition of the suspended load, controlled by the prevailing hydrodynamic conditions, contributes to sedimentation of the suspended fraction of radionuclides (Linnik et al 2006. It is worth noting that chemical properties of radioisotopes are similar to their stable analogues, but their mass amounts are not comparable and, in general, the behavior of trace elements depends upon the distribution of the major elements defining geochemical conditions (the so-called typomorphic elements, Perel'man 1975).…”

Section: Parameters Of Kmcc Radionuclide Discharge Behaviormentioning

confidence: 99%

“…Detailed radioecological studies of the Yenisey focusing on the contamination of water and sediments started only in the 1990s and were most frequent in the last decade (Sukhorukov et al 2000;Bondareva and Bolsunovskii 2008;Bondareva and Artamonova 2011;Sukhorukov et al 2004Sukhorukov et al , 2006Linnik et al 2005Linnik et al , 2006Vakulovsky et al 2006Vakulovsky et al , 2014Bolsunovsky 2011;Kropatcheva et al 2012;Korobova et al 2014). The main practical goal of these studies was to evaluate the level and extent of contamination and its radioecological significance.…”

Section: Introductionmentioning

confidence: 99%

“…The study is based on the data (published and unpublished) of the international project STREAM (Brown et al 2002;Linnik et al 2005Linnik et al , 2006.…”

Section: Introductionmentioning

confidence: 99%

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Distribution of artificial radioisotopes in granulometric and organic fractions of alluvial soils downstream from the Krasnoyarsk Mining and Chemical Combine (KMCC), Russia

2015

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Purpose The purpose of this study was to compare the distribution of the most significant medium and long-lived radioisotopes, i.e., 60 Co, 137 Cs, and 152 Eu, in granulometric and organic fractions of alluvial soils downstream from the Krasnoyarsk Mining and Chemical Combine (KMCC), Russia, to reveal natural patterns of their behavior and accumulation. Materials and methods Soil samples collected at different elevations and depths in a floodplain of the Yenisey River downstream from the KMCC (20-250 km) were subjected to granulometric analysis by dry screening and a modified Petelin method. Fractions <0.05 mm were collected by a pipette method. Radionuclide activity in the different soil layers and in their fractions was determined using a spectrometer equipped with an HPGe detector. Concentration of total C (Ctot) and C of carbonates (Ccarb) was determined using a CHN analyzer before and after elimination of carbonates, organic C (Corg) being calculated as the difference between the obtained values. Organic fractions were separated by saturation of the air-dry sample with 0.1 M NaOH and further precipitation of humic acid from filtrate by 1 M HCl at pH 1. The separation resulted in three fractions of the fulvic acids, humic acids, and the residue containing the denuded mineral phase and the refractory organic residue. The selected bulk samples and fractions were analyzed for radionuclide activity. Results and discussion Based on earlier results, the distribution of the pelite (<0.01 mm) and aleurite (0.01-0.1 mm) fractions in alluvium and soil samples have been analyzed to evaluate the grain-size contribution to radionuclide fixation. A positive correlation between radionuclide activity and the portion of pelite fraction was established for 60 Co and 152 Eu, while 137 Cs accumulation was not related with this fraction. In organic matter (OM) extracts, more than 90 % of 137 Cs, at proportions similar to those attributable to 238 Th and 40 K, were associated with the residue fraction, while 72 % of 152 Eu and 46 % of 60 Co were found in the mobile fraction of the low molecular fulvic acids. In successive layers of the soil vertical profile, approximately 94 % of the 152 Eu variation may be explained by a linear model with Corg and Ccarb values as independent variables. Conclusions Different associations of 137 Cs, 60 Co, and 152 Eu with particulate and organic fractions in river sediments and floodplain soils could be explained by the dominating discharge form (water soluble or particulate), affinity to organic substances of different mobility, sorption by minerals and their aggregates, and chemisorption.

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Monitoring and assessment of 137Cs and 90Sr radioactive isotopes in the ‘soil – rhizosphere – sedge’ system of the Yenisei River floodplain (near impact zone of Krasnoyarsk MCC, Russia)

Kropacheva

Melgunov

Makarova

et al. 2021

Environ Monit Assess

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Patterns and inventories of radioactive contamination of island sites of the Yenisey River, Russia

Cited by 22 publications

References 13 publications

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

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

Distribution of artificial radioisotopes in granulometric and organic fractions of alluvial soils downstream from the Krasnoyarsk Mining and Chemical Combine (KMCC), Russia

Monitoring and assessment of 137Cs and 90Sr radioactive isotopes in the ‘soil – rhizosphere – sedge’ system of the Yenisei River floodplain (near impact zone of Krasnoyarsk MCC, Russia)

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