Nsibande M C, Mahlobo M, Farid S M
Department of Physics, University of Swaziland, Africa.
Sci Total Environ. 1994 Jul 18;151(3):181-5. doi: 10.1016/0048-9697(94)90466-9.
Time-integrated measurements of environmental radiation levels are commonly carried out using solid state nuclear track detectors (SSNTDs). These detectors are particularly suitable for monitoring indoor radiation. Levels of radon were measured, during winter and summer seasons, inside 130 traditional and modern houses and multi-family apartment buildings. The traditional houses, modern houses and apartment buildings had average radon levels of 62 Bq.m-3, 125 Bq.m-3 and 133 Bq.m-3, respectively. Between the ground and second floor of the apartment buildings, radon levels diminished by a factor of more than three which indicates that entry of radon-bearing soil gas was largely responsible for the higher concentration of radon in the ground floor. The radon levels in winter exceeded by approximately 30% the radon levels during summer. From the experimental data the equilibrium factor (F) and the effective dose equivalent (HE) were also obtained.
环境辐射水平的时间积分测量通常使用固态核径迹探测器（SSNTDs）进行。这些探测器特别适合监测室内辐射。在冬季和夏季，对130栋传统房屋、现代房屋和多户公寓楼内的氡水平进行了测量。传统房屋、现代房屋和公寓楼的平均氡水平分别为62 Bq.m-3、125 Bq.m-3和133 Bq.m-3。在公寓楼的一楼和二楼之间，氡水平降低了三倍多，这表明含氡土壤气体的进入是造成一楼氡浓度较高的主要原因。冬季的氡水平比夏季高出约30%。从实验数据中还获得了平衡因子（F）和有效剂量当量（HE）。
