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| Measurement and analysis of gross alpha and beta radioactivity of atmospheric aerosols in Beijing |
| KONG Yuxia, CUI Limeng, WANG Huan, MENG Qinghua, MA Yongzhong |
| Beiing Center for Disease Control and Prevention, Preventive Medicine Research Center of Beijing, Beijing 100013 China |
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Abstract Objective To understand the correlation between gross alpha and beta radioactivity concentration in atmospheric aerosols and haze in Beijing from 2016 to 2017. Methods Large-flow aerosol sampling in Beijing was carried out, and radioactivity aerosol samples were measured by a BH1217 low background alpha-beta measuring instrument. Results Radioactive concentrations of gross alpha and beta in 32 monitoring days in 2016 were 0.36~9.02 mBq/m3 and 0.06~3.75 mBq/m3 respectively. The ranges of gross alpha and beta radioactivity concentration of atmospheric aerosols in 47 monitoring days in 2017 were 0.01~4.31 mBq/m3 and 0.02~2.61 mBq/m3 respectively. Conclusion Gross alpha and beta radioactivity concentrations in the atmosphere are seasonally related, however there is no significant correlation between them and PM2.5 or PM10 concentrations.
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Received: 23 April 2019
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