Residential radon exposure in Astana and Aqsu, Kazakhstan
Tokonami S. Kranrod C. Kazymbet P. Omori Y. Bakhtin M. Poltabtim W. Musikawan S. Pradana R. Kashkinbayev Y. Zhumadilov K. Pirmanova A. Aumalikova M. Isa Z. Sakaguchi A. Sato H. Hoshi M.
June 2023Institute of Physics
Journal of Radiological Protection
2023#43Issue 2
A pilot study was carried out to measure indoor radon concentrations in a uranium mining area of northern Kazakhstan. A total of 80 places at kindergartens, elementary schools, and dwellings were selected in Aqsu village and Astana city as the uranium mining area and background area for comparison, respectively. In Astana and Aqsu, the 3-month radon concentrations from late summer to autumn in 2022 were measured using the RADUET passive radon detectors. Radon concentrations ranged from 4 to >2000 Bq m−3 (mean ± standard deviation: 290 ± 173 Bq m−3) throughout the study areas. The concentrations were higher in Aqsu, and 70% of the dwellings there exceeded 300 Bq m−3, whereas only 5% of them exceeded 300 Bq m−3 in Astana. Accordingly, the new dose conversion factor for radon recommended by International Commission on Radiological Protection Publication 137 was applied to calculate the annual effective dose. The annual effective dose from the inhalation of radon was estimated to be 3.6 ± 4.6 mSv y−1 for Astana and 23.7 ± 15.6 mSv y−1, for Aqsu, which are both higher than the world average value of 2.5 mSv y−1.
Kazakhstan , radon , thoron
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Institute of Radiation Emergency Medicine, Hirosaki University, Aomori, Hirosaki, 036-8564, Japan
Natural Radiation Survey and Analysis Research Unit, Department of Nuclear Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand
Institute of Radiobiology and Radiation Protection, NJSC Astana Medical University, Astana, 010000, Kazakhstan
Department of Radiation Science, Graduate School of Health Sciences, Hirosaki University, 66-1 Honcho, Hirosaki, Aomori, 036-8564, Japan
L.N. Gumilyov Eurasian National University, Astana, 010008, Kazakhstan
Institute of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai Ibaraki, Tsukuba, 305-8577, Japan
Ibaraki Prefectural University of Health Sciences, 4669-2 Ami, Ami-machi Ibaraki, Inashiki-gun, 300-0394, Japan
The Center for Peace, Hiroshima University, 1-1-89 Higashisenda-machi, Naka-ku, Hiroshima, 730-0053, Japan
Institute of Radiation Emergency Medicine
Natural Radiation Survey and Analysis Research Unit
Institute of Radiobiology and Radiation Protection
Department of Radiation Science
L.N. Gumilyov Eurasian National University
Institute of Pure and Applied Sciences
Ibaraki Prefectural University of Health Sciences
The Center for Peace
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