成都市某办公场所室内氡活度浓度水平调查及污染研究

摘要/Abstract

摘要： 采用固体径迹蚀刻法和瞬时法对成都某办公场所室内氡活度浓度展开调查研究。结果表明:该办公场所室内累积氡活度浓度的范围为10.82～102.50 Bq/m³,算术平均值为(36.56±17.38)Bq/m³,低于全国和世界平均水平。调查研究证实了玻璃墙体和橡胶地面等新型装修材料可有效减少室内氡,验证了通风是降低室内氡活度浓度的有效措施。研究发现,环境空气质量中高浓度的PM_2.5和PM₁₀对办公场所室内和户外氡活度浓度水平均会产生影响。通过发现污染并处理低本底实验室内的氡活度浓度异常给出建议:避免放射性核素浓度较高的样品暂存于测试设备附近;为降低氡及子体对测试的干扰,提高分析结果的准确度,建议升级改造低本底实验室的新风系统。

关键词: 室内氡活度浓度, 办公场所, 环境空气质量, 低本底实验室

Abstract: The solid state nuclear track method and the instantaneous method were used to investigate indoor radon concentrations of an office space in Cheng Du. The results show that the range of indoor cumulative radon concentrations is 10.82-102.50 Bq/m³, the arithmetic mean is (36.56±17.38) Bq/m³, which is lower than the national and world averages. The investigation proved that new decoration materials such as glass walls and rubber ground can effectively reduce indoor radon, and ventilation can also effectively reduce indoor radon concentration. The studies found that high concentrations of PM_2.5 and PM10 can affect office indoor and outdoor radon concentration levels. By finding contamination and dealing with the abnormal radon concentration in the low background laboratory, the following suggestions are given: Avoid samples with high concentration of radio-nuclides temporarily stored near the test equipment; In order to reduce the interference of radon and its daughters on measurement and improve the accuracy of analysis results, it is suggested to upgrade and transform the fresh air system of low-background laboratory.

Key words: indoor radon concentrations, office space, ambient air quality, low background laboratory

中图分类号:

R144

徐立鹏, 葛良全, 王猛, 王亮, 李斌, 余强, 王茜, 郭旭影, 谷懿. 成都市某办公场所室内氡活度浓度水平调查及污染研究[J]. 辐射防护, 2020, 40(3): 204-211.

XU Lipeng, GE Liangquan, WANG Meng, WANG Liang, LI Bin, YU Qiang, WANG Qian, GUO Xuying, GU Yi. Study on indoor radon concentration level and pollution of an office space in Chengdu[J]. RADIATION PROTECTION, 2020, 40(3): 204-211.

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