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| Investigation of radioactivity levels of surface water and dringking water in Beijing from 2011 to 2017 |
| WANG Huan, SUN Yaru, KONG Yuxia, CUI Limeng, MA Yongzhong |
| Beijing Municipal Center for Disease Prevention and Control, Beijing Research Center for Preventive Medicine, Beijing 100013 China |
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Abstract Objective To investigate the radioactivity level and its distribution in surface water and drinking water in Beijing from 2011 to 2017 for better launching the program of monitoring and assessment of water.Methods 551 water samples including 287 surface water and 264 drinking water were collected from 16 districts. The gross α, gross β of these samples were measured by using the BH1217B dual-channel low α/β measuring instrument.Results The gross α, gross β of surface water and drinking water in Beijing from 2011 to 2017 were averaged to be 0.082, 0.230, 0.090 and 0.090 Bq/L, respectively. The level of gross α in drinking water was higher than that in surface water. The level of gross β in surface water was higher than that in drinking water. The difference of gross α activity from 2011 to 2017 in surface water was statistically significant. The difference of gross β activity from 2011 to 2017 in surface water was not statistically significant. The difference of gross α and gross β activity from 2011 to 2017 in drinking water were statistically significant respectively.Conclusion The radioactivity level in surface water and drinking water in Beijing from 2011 to 2017 are in a normal background level.
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Received: 02 April 2018
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