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目的选择我国某城市四个行政区域中的8家幼儿园,初步测量幼儿园室内氡水平。方法采用累积测量方法,在幼儿园不同活动场所布放CR-39固体核径迹探测器,布放周期为3~4个月。结果幼儿园86个测量点室内氡浓度均值为(60±34)Bq/m~3,范围为16~196 Bq/m~3。结论本次调查中8家幼儿园室内氡浓度符合相应国家标准要求。
Objective To choose eight kindergartens in four administrative regions of a city in our country and to measure the indoor radon level in kindergartens. Methods The cumulative measurement method was used to place CR-39 solid nuclear track detectors in different places of kindergarten. The deployment period was 3 to 4 months. Results The mean indoor radon concentration was (60 ± 34) Bq / m ~ 3 in 86 measuring points in kindergarten, ranging from 16 to 196 Bq / m ~ 3. Conclusion The indoor radon concentration of 8 kindergartens in this survey meets the requirements of the corresponding national standards.