成都市某办公场所室内氡活度浓度水平调查及污染研究

Abstract

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

CLC Number:

R144

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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Study on indoor radon concentration level and pollution of an office space in Chengdu

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