银川市26户居室内氡污染水平调查

目的 了解银川市居民住宅氡污染水平，探讨室内氡的变化规律。方法 采用现场监测的方法，对居室内氡、TSP等指标进行24h连续监测。结果 本地区室内氡浓度平均水平较全国其他地区高；未发现室内氡浓度与建筑类型、装修材料、楼层有明显关系；室内氡浓度与TSP浓度、空气湿度呈正相关，与气温呈负相关。室内氡浓度日变化是清晨6时最高、下午17时最低。结论 建筑材料可能是导致室内氡浓度升高的主要原因；室内TSP浓度、空气湿度、温度的改变可影响室内氡浓度水平。

Study On the Indoor Pollution of Radon in Yinchuan

Objective To know about the indoor pollution of radon in Yinchuan, and the regularity of change of indoor radon. Methods The indoor radon level and TSP concentration were 24 hours uninterruptedly determined upon-the-spot. Results The concentration of indoor radon was higher than any other districts in our country. The indoor radon was not found apparent connection with type of buildings, materials of decoration and the storeys. There was a positive correlation between radon concentration and TSP level, air moisture and negative correlation between radon level and air temperature. Radon was the highest at six oclock at early morning, and the lowest at seventeen in the afternoon. Conclusion The material of buildings is a vital reason which leads to ascendence of the radon concentration, the change of TSP concentration, air moisture and temperature may influence the level of the indoor radon.