Purpose

This study aimed to determine radon concentrations in mines, stone processing factories, residential houses, and public areas, as well as calculating its effective dose in Neyriz, Iran.

Method

A total of 74 alpha Track detectors (CR-39 detector) were installed at the desired locations based on the US-EPA’s protocol. After 3 months the detectors were collected and delivered to a Radon Reference Laboratory for analyzing.

Results

Mean ± SD, minimum and maximum radon concentrations in the sampling buildings were 29.93 ± 12.63, 10.33, and 66.76 Bq/m³, respectively. The effective annual dose was calculated to be 0.75 mSv/year, which was lower than the recommended value. Significant positive correlations were found between radon concentrations and some studied variables including smoking cigarettes, number of cigarettes smoked, duration of smoking, building’s age, number of floors, having cracks, use of colors in the building, use of ceramic for flooring, use of stone for flooring, and gas consumption. The number of cigarettes smoked by the residents was the most important predictor of radon concentrations. Radon concentrations were lower than standard values in all sampling locations.

Conclusion

It is necessary to conduct further studies in the field of regional geology and determine the sources that release radon in these areas to prevent further increases in radon concentration due to the proximity and plurality of mines and factories.

中文翻译：

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伊朗内里兹住宅、加工厂和矿山的室内氡浓度。

目的

本研究旨在确定矿山、石材加工厂、住宅和公共区域的氡浓度，并计算其在伊朗内里兹的有效剂量。

方法

根据 US-EPA 的协议，总共 74 个 alpha Track 检测器（CR-39 检测器）安装在所需位置。3 个月后，探测器被收集起来并送到氡参考实验室进行分析。

结果

采样建筑物中氡浓度的平均值±标准差、最小和最大浓度分别为 29.93 ± 12.63、10.33 和 66.76 Bq/m ³。年有效剂量计算为0.75 mSv/年，低于推荐值。在氡浓度与一些研究变量之间发现了显着的正相关关系，这些变量包括吸烟、吸烟数量、吸烟持续时间、建筑物的年龄、楼层数、有裂缝、建筑物中的颜色使用、地板使用陶瓷、使用地板用石头，耗气量大。居民吸烟的香烟数量是氡浓度最重要的预测指标。所有采样点的氡浓度均低于标准值。

结论

有必要在区域地质领域进行进一步的研究，确定这些地区氡的释放源，以防止由于矿山和工厂靠近和众多而导致氡浓度进一步增加。