摘要
本文介绍室内氡的来源、水平和控制方法。根据文献资料汇集得出了截至 1994年中国室内、室外和地下室氡浓度的平均值 (分别为 2 3.7、 12 .6和 373Bq/ m3)、氡子体平衡因子 (分别为 0 .4 7、0 .5 9和0 .4 3)以及室内氡浓度水平的地区分布 ,室内氡的季节变化和昼夜变化。讨论了室内氡浓度控制的必要性、控制依据和控制措施 。
Source,level and control of indoor radon in China are discussed. The average values 222 Rn concentrations of indoors, outdoors and in basement,being 23.7, 12.6 and 373 Bq/m 3, respectively, are listed togheter with the radon daughter equilibrium factors, being 0.47, 0.59 and 0.43,respectively. The regional variations of indoor, outdoor 222 Rn concentrations and the seasonal and round the clock variations of indoors 222 Rn are pictured.Discussions on the necessity, action level and measures for controlling high level indoor 222 Rn are presented. Also presented is the discussion on the radioactivity of building materials and their control of the usage. (
出处
《辐射防护》
CAS
CSCD
北大核心
2001年第5期291-299,共9页
Radiation Protection
