Estimation of radionuclides global fallout levels in the soils of CIS and eastern Europe territory

Edomskaya M.A. Lukashenko S.N. Stupakova G.A. Kharkin P.V. Gluchshenko V.N. Korovin S.V.
June 2022 Elsevier Ltd

Journal of Environmental Radioactivity
2022 #247

This study is devoted to the estimation of radionuclides global fallout levels in the soils of Commonwealth of Independent States (CIS) and Eastern Europe territory as a result of nuclear explosions. 58 standard soil samples were used, which were selected in different soil and climatic areas of the territory of CIS and Eastern Europe in 1978–2018. All samples were measured by gamma spectrometry. Determination of plutonium isotopes and strontium was performed according to the method of the joint determination of these radionuclides from one sample. IN the samples considered in this work, the content of ⁶⁰Co, ¹⁵⁴Eu, ¹⁵⁵Eu was below the detection limits, which were 0.4; 1.0 and 1.0, respectively. Natural radionuclides analysis results indicated that the obtained samples are typical soil samples without its abnormal contents. The content of ¹³⁷Cs, ⁹⁰Sr, ^239+240Pu in a 20 cm soil layer due to global fallout is (3.9 ± 1.7), (2.2 ± 0.8), (0.18 ± 0.08) Bq/kg respectively, which considering the distribution of these radionuclides by depth and average soil density is (1.2 ± 0.5) kBq/m² for ¹³⁷Cs, (0.42 ± 0.15) kBq/m²– ⁹⁰Sr and (55.0 ± 24.0) Bq/m²– ^239+240Pu. The isotopic ratios¹³⁷Cs/⁹⁰Sr and ¹³⁷Cs/^239+240Pu for the territory of CIS and Eastern Europe are at the level (2.0 ± 0.71) and (25 ± 15), respectively.

Cesium , Concentration in soils , Global fallout , Isotopes of plutonium , Radionuclides , Strontium

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Russian Institute of Radiology and Agroecology, Obninsk, Russian Federation
Russian Institute of Agricultural Chemistry, Moscow, Russian Federation
The Institute of Nuclear Physics, Almaty, Kazakhstan

Russian Institute of Radiology and Agroecology
Russian Institute of Agricultural Chemistry
The Institute of Nuclear Physics

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