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«IZVESTIYA IRKUTSKOGO GOSUDARSTVENNOGO UNIVERSITETA». SERIYA «NAUKI O ZEMLE»
«THE BULLETIN OF IRKUTSK STATE UNIVERSITY». SERIES «EARTH SCIENCES»
ISSN 2073-3402 (Print)

List of issues > Series «Earth Sciences». 2022. Vol 39

The Radon Flux Density is 222 in the Soils of the Tobolsk District of the Tyumen Region

Author(s)

A. P. Kolobov

Abstract
The aim of the work is to determine potentially radon dangerous areas for the local population on the territory of Kondinskaya lowland within the boundaries of Tobolsk district of Tyumen region with the help of radon monitoring complex “CAMERA-01”. The density of the radon-222 flux was defined at the soil depth from 0 to 100 cm in 10 plots. The plots are located on the low above floodplain terrace, in the levee and central floodplains of the Irtysh River and a tributary of the Tobol River – the Suklyomka River. The highest average value of radon-222 exhalation from the soil surface was found in the vicinity of Makedonova village – 39 mBq/(m2·s), in the rest of the tested soil plots it was not more than 18 mBq/(m2·s). The received data on density of radon-222 flux from the surface of soils of the investigated plots make it possible to say that they do not refer to potentially radon-hazardous. At the same time it is found that the territories around the village Usharovo, the village of Makedonova and settlement Savinsky Zaton (floodplain terraces of the Irtysh River) at a depth of 40 to 100 cm have average values of the flux density of natural radionuclide exceeding 200 mBq/(m2·s). Only in soils of the floodplain terrace of the river Suklyomka – a tributary of the Tobol river the radon– 222 flux density below 80 mBq/(m2 s) – I class of radon-hazard was fixed at the whole investigated depth. The highest average density of the radon–222 flow (1200 mBq/(m2·s)) at the depth of 100 cm was found in the vicinity of the settlement Savinsky Zaton, probably associated with the transfer of radon-222 from groundwater of the liquidated well, near which the sampling of radon-222 was made.
About the Authors
Kolobov Anatolii Pavlovich, Senior Laboratory Assistant, Tobolsk Complex Scientific Station UB RAS, 15, Akademik Yuriy Osipov st., Tobolsk, 626152, Russian Federation, e-mail: kolobovap@tobscience.ru
For citation
Kolobov A. P. The Radon Flux Density is 222 in the Soils of the Tobolsk District of the Tyumen Region. The Bulletin of Irkutsk State University. Series Earth Sciences, 2022, vol. 39, pp. 56-68. https://doi.org/10.26516/2073-3402.2022.39.56 (in Russian)
Keywords
radon, radon flux density-222, Tobolsk district, Kondinskaya lowland, Tyumen region.
UDC
546.296:631.4(571.1)
DOI
https://doi.org/10.26516/2073-3402.2022.39.56
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