Department of Physics, Faculty of Sciences and Mathematics, University of Priština in Kosovska Mitrovica, Kosovska Mitrovica, Serbia.
Department of Physics, Faculty of Sciences, University of Novi Sad, Novi Sad, Serbia.
Indoor Air. 2022 Jul;32(7):e13077. doi: 10.1111/ina.13077.
This study was performed to investigate radon levels in dwellings in the mining area near the town of Kosovska Mitrovica. The Passive radon technique based on the charcoal canister test kit conducted in summer and autumn 2019 showed unexpected results. The reference level of 300 Bq/m for indoor radon concentration was exceeded in 15 of 26 dwellings. Preliminary measurements of gamma dose rate in some dwellings built from local stone showed values from 0.30 to 0.45 μSv/h, while 75% of measurements in dwellings with stone foundations had radon above the reference level. The highest radon concentration (22 500 ± 220 Bq/m ) was measured in the cellar of one family house. The RAD7 device (Durridge Company, Inc.) was used to measure radon concentrations in water and nearby soil of some dwellings. Indoor radon concentration fluctuated significantly over two days; over a one-day time scale, radon varied from 2843 ± 217 Bq/m at midnight to 1449 ± 104 Bq/m in the morning at one site, and abruptly decreased from a maximum of 2146 ± 262 Bq/m in one day to a minimum of 21 Bq/m the next day at another site. The influence of geological substrate on radon exposure was discussed through the estimation of geogenic radon potential, which varies from low the high radon index despite to high permeability of soil.
本研究旨在调查科索夫斯卡米特罗维察镇附近矿区住宅内的氡气水平。2019 年夏秋季采用基于活性炭罐测试套件的被动式氡气技术进行的研究结果出人意料。26 处住宅中有 15 处超过了室内氡浓度 300 Bq/m 的参考水平。对部分采用当地石材建造的住宅进行初步γ剂量率测量，结果显示值为 0.30 至 0.45 μSv/h，而 75%有石质地基的住宅氡气浓度高于参考水平。一户人家地下室的氡浓度最高（22 500 ± 220 Bq/m）。RAD7 装置（Durridge Company, Inc.）用于测量部分住宅内水和附近土壤中的氡浓度。室内氡浓度在两天内波动显著；在一天的时间尺度上，一个地点的氡浓度从午夜的 2843 ± 217 Bq/m 变化到清晨的 1449 ± 104 Bq/m，而另一个地点的氡浓度在一天内从最大值 2146 ± 262 Bq/m 急剧下降到次日的最小值 21 Bq/m。通过估算地球成因氡气潜力，探讨了地质基底对氡暴露的影响，尽管土壤渗透率较高，但氡气潜力从低到高变化。
