Faculty of Physics, "St. Kliment Ohridski", Sofia University, 1164 Sofia, Bulgaria.
Radon Group, University of Cantabria, 39005 Santander, Cantabria, Spain.
Int J Environ Res Public Health. 2019 Aug 22;16(17):3038. doi: 10.3390/ijerph16173038.
The application of the compact disk (CD) method for radon measurements at mines, caves and other workplaces needs testing under highly variable exposure conditions. We present the results from a blind comparison of CDs exposed in the Laboratory of Natural Radiation (Saelices el Chico, Spain). During the exposure the temperature varied from 6.5 to 24.9 °C (average 12.6 °C) and the Rn activity concentrations varied from <10 Bq m to 147 kBq m. Good correspondence was observed between the integrated Rn activity concentration determined by the reference instruments in the laboratory (122,500 ± 6100 kBq h m) and that assessed by analysis of the CDs at a depth 80 µm beneath the front surface (118,000 ± 12,000 kBq h m) and at a depth of 120 µm (106,000 ± 12,000 kBq h m). The theoretical modeling of the CD response under variable temperature and radon concentration suggested that the small bias is probably due to the time variation of the calibration factor because of the time variations of the temperature.
在多变的辐射暴露条件下，需要对用于矿山、洞穴和其他工作场所氡测量的光盘（CD）方法的应用进行测试。我们展示了在天然辐射实验室（西班牙塞利奇斯-埃利乔）中进行的 CD 盲比对比的结果。在暴露期间，温度从 6.5 到 24.9°C（平均 12.6°C）变化，Rn 活度浓度从<10 Bq m 到 147 kBq m 变化。实验室中参考仪器确定的累积 Rn 活度浓度（122,500 ± 6100 kBq h m）与从 CD 前表面下 80 µm 深度（118,000 ± 12,000 kBq h m）和 120 µm 深度（106,000 ± 12,000 kBq h m）处分析评估的结果之间观察到了良好的一致性。对温度和氡浓度变化条件下 CD 响应的理论建模表明，小的偏差可能是由于温度变化导致校准因子的时间变化所致。
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