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使用固体径迹蚀刻法调查了常州市7个县(区)的室内氡浓度水平,结果表明常州地区室内氡浓度高于我国平均水平,尤其是溧阳地区,该地区60%调查点的氡浓度都高于100 Bq/m~3,明显高于常州其它地区。土壤中的~(226)Ra含量、建筑结构及建筑材料是常州市室内氡浓度的主要影响因素,建议采用加强通风或采用堵塞或密封等措施防止氡从地基或周围土壤进入建筑物的方法降低室内氡含量。
Indoor radon concentration levels in 7 counties (districts) of Changzhou City were investigated using solid track etching method. The results showed that the indoor radon concentration in Changzhou was higher than the average level in our country, especially in Liyang. The radon concentrations in 60% of surveyed areas in this area were Higher than 100 Bq / m ~ 3, significantly higher than the rest of Changzhou. The contents of (226) Ra in soil, building structure and building materials are the main influencing factors of indoor radon concentration in Changzhou city. It is suggested that measures to prevent radon from entering the building from the foundation or the surrounding soil by means of ventilation or blocking or sealing should be adopted Indoor radon content.