| Ren Hong,Cao Yiyao,Wang Peng,Zou Hua,Yu Shunfei,Zhu Bing,Zhang Dongxia,Xuan Zhiqiang,Zhao Yaoxian.Impact of water supply from Qiandao Lake on gross radioactivity level in drinking water in downtown Hangzhou[J].Chinese Journal of Radiological Medicine and Protection,2022,42(6):438-442 |
| Impact of water supply from Qiandao Lake on gross radioactivity level in drinking water in downtown Hangzhou |
| Received:January 27, 2022 |
| DOI：10.3760/cma.j.cn112271-20220127-00037 |
| KeyWords:Drinking water Gross α Gross β Radioactivity levels |
| FundProject:浙江省基础公益研究计划项目(LGC21H260001);浙江省卫生健康科技计划(2021KY613, 2022RC120, 2022KY130, 2022KY132);浙南放射医学与核技术应用研究院开放课题(ZFY-2021-K-003);浙江省疾病预防控制中心2020年疾控英才孵育项目 |
| Author Name | Affiliation | E-mail | | Ren Hong | Zhejiang Province Center for Disease Control and Prevention, Hangzhou 310051, China | | | Cao Yiyao | Zhejiang Province Center for Disease Control and Prevention, Hangzhou 310051, China | yycao@cdc.zj.cn | | Wang Peng | Zhejiang Province Center for Disease Control and Prevention, Hangzhou 310051, China | | | Zou Hua | Zhejiang Province Center for Disease Control and Prevention, Hangzhou 310051, China | | | Yu Shunfei | Zhejiang Province Center for Disease Control and Prevention, Hangzhou 310051, China | | | Zhu Bing | Hangzhou Center for Disease Control and Prevention, Hangzhou 310021, China | | | Zhang Dongxia | Zhejiang Province Center for Disease Control and Prevention, Hangzhou 310051, China | | | Xuan Zhiqiang | Zhejiang Province Center for Disease Control and Prevention, Hangzhou 310051, China | | | Zhao Yaoxian | Zhejiang Province Center for Disease Control and Prevention, Hangzhou 310051, China | |
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| Abstract:: |
| Objective To investigate the levels of gross radioactivity in drinking water in Hangzhou city before and after Qiandao Lake as the water source to the main urban area of Hangzhou.Methods Since 2012, water samples were collected from water source, factory water and peripheral water in rainy and dry seasons, respectively, to determine their gross α and β activity concentrations for comparison and analysis.Results The gross radioactivity levels in drinking water in Hangzhou are lower than the limits specified in the national standard "Standards for drinking water quality" (GB 5749-2006), without statistically significant difference for these water sources between the rainy and dry season (P>0.05). The gross α(0.008±0.000)and gross β(0.034±0.013)levels in Qiandao lake were both less than those in Qiantang river (Z=-3.235, -4.058, P < 0.05), with significant difference (Z=-2.181, -4.577, P < 0.05). There was no significant difference in gross α and gross β in factory water and peripheral water before and after the operation of Qiandao Lake water supply project (P>0.05).Conclusions The gross radioactivity in drinking water in downtown Hangzhou are low from 2012 to 2020. The gross radioactivity levels in Qiandao Lake are lower than in the lower reaches of Qiantang river and Dongtiao steam. No impact was generated on radioactivity levels in drinking water after Qiandao lake supplied water to Hangzhou. |
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