摘要
采用RAD-7型电子连续测氡仪,对某大学新校区室内氡浓度进行检测与研究.结果显示:室内空气中氡浓度与温度、相对湿度成正比;底层建筑室内氡浓度的峰值出现在14~17 h时段,与土壤中氡浓度变化规律一致,说明室内空气中氡与房屋地基下的岩石、土壤类型及相关的建筑材料有关;3楼、6楼的氡浓度变化波峰出现在6~11 h时段,波谷出现在14~17 h时段;由检测数据可知,大部分室内氡浓度值低于200 Bq/m3,部分超过200 Bq/m3.建议常开门窗,加大通风量以稀释室内氡及其子体的浓度,将其排放到室外.
This paper measures and studies the indoor radon concentrations of some university's new campus by using electronic continuous radon measurement instrument. Results show that in the indoor air, the radon concentrations have a direct ratio with the temperature and the humidity; the radon concentrations peak of indoor bottom appears in 14-17 h a day, in accord with the change regularity of radon concentrations in soil, which illuminates that radon is related to the rocks under house foundation, the type of soil and the building materials ; the changes of radon concentration peaks of the third and sixth floor appears in 6-11 h a day, while the trough appears in 14-17 h a day; most of indoor radon concentrations is under 200 Bq/m3 , partly over 200 Bq/m3. The doors and windows should always be open in order to enhance ventilation, to dilute the indoor concentration of radon and its progeny, and to finally eliminate them outside.
出处
《昆明学院学报》
2012年第6期95-97,共3页
Journal of Kunming University
基金
云南大学科研基金资助项目(2010YB035)
关键词
室内
氡浓度
检测
影响因素
indoor
radon concentrations
detection test
influencing factor