Vaupotic J, Krizman M, Planinić J, Pezdic J, Adamic K, Stegnar P, Kobal I
J. Stefan Institute, Ljubljiana, Slovenia.
Health Phys. 1994 May;66(5):550-6. doi: 10.1097/00004032-199405000-00007.
Systematic measurements of indoor radon concentrations and gamma dose rates were carried out in the 730 kindergartens and play schools in Slovenia that, together, care for 65,600 children. The main method for indoor radon measurement was direct sampling in alpha scintillation cells, but in cases with an increased instantaneous radon concentration, the additional methods of track-etch detectors and alpha spectroscopy were applied. In 528 kindergartens and play schools (72%), radon concentrations were below 100 Bq m-3, with a geometric mean of 58 Bq m-3. In 16 kindergartens and play schools (2.2%), radon concentrations exceeded 800 Bq m-3. In all cases, the main reason for a high indoor radon concentration was the geological structure of the soil. Gamma dose rates were measured with a portable scintillation counter, but in the Ljubljana region thermoluminescence dosimeters were also exposed. The results ranged from 30 to 295 nGy h-1, with a geometric mean of 88 nGy h-1.
在斯洛文尼亚的730所幼儿园和学前学校中，对室内氡浓度和伽马剂量率进行了系统测量，这些机构共照顾65,600名儿童。室内氡测量的主要方法是在阿尔法闪烁室中直接采样，但在瞬时氡浓度增加的情况下，还应用了径迹蚀刻探测器和阿尔法光谱等额外方法。在528所幼儿园和学前学校（72%）中，氡浓度低于100 Bq m-3，几何平均值为58 Bq m-3。在16所幼儿园和学前学校（2.2%）中，氡浓度超过800 Bq m-3。在所有情况下，室内氡浓度高的主要原因是土壤的地质结构。伽马剂量率用便携式闪烁计数器测量，但在卢布尔雅那地区也放置了热释光剂量计。结果范围为30至295 nGy h-1，几何平均值为88 nGy h-1。
