意大利学校内的氡辐射暴露。
Indoor Radon Exposure in Italian Schools.
机构信息
Department of Medical, Surgical and Experimental Sciences, University of Sassari, Via P. Manzella, 07100 Sassari, Italy.
Department of Health Sciences, University of Genova, Piazza Manin, 16122 Genova, Italy.
出版信息
Int J Environ Res Public Health. 2018 Apr 13;15(4):749. doi: 10.3390/ijerph15040749.
BACKGROUND
The aim of the study was to assess radon concentration in schoolrooms in a city located in the midwest of Italy.
METHODS
A two-phase environmental study was carried out in 19 school buildings of 16 primary, secondary, and tertiary schools.
RESULTS
Median (interquartile range-IQR) indoor radon concentration in schoolrooms was 91.6 (45.0-140.3) Bq/m³. The highest (median 952.8 Bq/m³) radon concentration was found in one (3.6%) classroom, located in a building of a primary school whose median concentration was 185 Bq/m³. Radon concentration was significantly correlated with the number of students and teachers, foundation wall construction material, and with the absence of underground floors. A geopedological survey was performed close to the building with highest radon level, showing the presence of granite and tonalithic granodiorite in the soil.
CONCLUSIONS
Radon levels should be routinely assessed where individuals live or work. Schools are susceptible targets, because of childhood stay and the long daily stay of occupants. Low-cost interventions, such as implementation of natural air ventilation and school maintenance, can reduce radon levels, limiting individual exposure.
背景
本研究旨在评估意大利中西部一城市中学校教室的氡浓度。
方法
在 16 所小学、中学和大专院校的 19 栋教学楼中进行了两阶段环境研究。
结果
教室中室内氡浓度的中位数（四分位距-IQR）为 91.6（45.0-140.3）Bq/m³。最高（中位数 952.8 Bq/m³）的氡浓度出现在一所（3.6%）教室中，该教室位于一所小学的教学楼内，其氡浓度中位数为 185 Bq/m³。氡浓度与学生和教师人数、基础墙建筑材料以及无地下层显著相关。在氡水平最高的建筑物附近进行了地质调查，显示土壤中存在花岗岩和英云闪长岩。
结论
个人居住或工作的地方应定期评估氡水平。由于儿童在学校停留时间长，以及居住者每天在学校停留时间长，因此学校是易受影响的目标。可以采取低成本的干预措施，例如实施自然通风和学校维护，可以降低氡水平，从而限制个人暴露。
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