Lee S C, Kim C K, Lee D M, Kang H D
Department of Physics, Kyung-Pook National University, Sankuk-dong 1370, Taegu 702-701, Korea.
Radiat Prot Dosimetry. 2001;94(3):269-74. doi: 10.1093/oxfordjournals.rpd.a006499.
The natural radionuclide (226Ra, 232Th and 40K) contents of building materials commonly used in South Korea have been determined by a gamma ray spectroscopy system using a high purity germanium detector. The radon exhalation rates and emanation coefficients of building materials have also been studied. The average concentrations of 226Ra, 232Th and 40K in building materials were in the range of 6.47-271 Bq.kg-1, N.D.-89.9 Bq.kg-1 and 16.8-1081 Bq.kg-1, respectively. The average radon exhalation rates and emanation coefficients were in the range of 0.0061-0.2404 Bq.kg-1.h-1 and 2.39-11.5%, respectively.
利用高纯锗探测器的伽马射线能谱系统测定了韩国常用建筑材料中的天然放射性核素（镭-226、钍-232和钾-40）含量。还研究了建筑材料的氡析出率和发射系数。建筑材料中镭-226、钍-232和钾-40的平均浓度分别在6.47 - 271 Bq·kg⁻¹、未检出 - 89.9 Bq·kg⁻¹和16.8 - 1081 Bq·kg⁻¹范围内。平均氡析出率和发射系数分别在0.0061 - 0.2404 Bq·kg⁻¹·h⁻¹和2.39 - 11.5%范围内。
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