Vaupotic J, Bezek M, Kávási N, Ishikawa T, Yonehara H, Tokonami S
Department of Environmental Sciences, JoŽef Stefan Institute, Jamova cesta 39, Ljubljana 1000, Slovenia.
Radiat Prot Dosimetry. 2012 Nov;152(1-3):247-52. doi: 10.1093/rpd/ncs232. Epub 2012 Aug 28.
Exposing the Raduet Rn-Tn solid-state nuclear track detectors, radon (Rn: (222)Rn) and thoron (Tn: (220)Rn) activity concentrations have been measured in 7 kindergartens and 18 elementary schools in Slovenia. Diurnal variations of both gases were monitored using a Rad7 device. The Rn concentration was in the range from 145 to 794 Bq m(-3) in kindergartens and from 70 to 770 Bq m(-3) in schools, and the Tn concentration was in the range from 21 to 73 Bq m(-3) in kindergartens and from 4 to 91 Bq m(-3) in schools. The Tn versus Rn concentration ratio varied from 0.02 to 0.83. Monthly effective doses due to radon and its decay products ranged from 109 to 600 μSv month(-1) in kindergartens and from 21 to 232 μSv month(-1) in schools, and those due to thoron and its decay products ranged from 3.8 to 13.3 μSv month(-1) in kindergartens and from 0.29 to 6.62 μSv month(-1) in schools. The contribution of thoron to the total effective dose was from 1.3 to 11 % in kindergartens and from 0.4 to 17 % in schools.
通过使用Raduet Rn-Tn固态核径迹探测器，对斯洛文尼亚的7所幼儿园和18所小学中的氡（Rn：（222）Rn）和钍射气（Tn：（220）Rn）活度浓度进行了测量。使用Rad7设备监测了这两种气体的日变化。幼儿园中的Rn浓度范围为145至794 Bq m⁻³，学校中的Rn浓度范围为70至770 Bq m⁻³；幼儿园中的Tn浓度范围为21至73 Bq m⁻³，学校中的Tn浓度范围为4至91 Bq m⁻³。Tn与Rn浓度之比在0.02至0.83之间变化。幼儿园中因氡及其衰变产物导致的月有效剂量范围为109至600 μSv 月⁻¹，学校中为21至232 μSv 月⁻¹；幼儿园中因钍射气及其衰变产物导致的月有效剂量范围为3.8至13.3 μSv 月⁻¹，学校中为0.29至6.62 μSv 月⁻¹。钍射气对总有效剂量的贡献在幼儿园中为1.3%至11%，在学校中为0.4%至17%。
