| Wang Peng,Cao Yiyao,Ren Hong,Zhou Lei,Zou Hua,Yu Shunfei,Zhao Yaoxian,Lai Zhongjun,Xuan Zhiqiang.Investigation on 90Sr and 137Cs activity concentrations in water in Hangzhou urban area from 2012 to 2020[J].Chinese Journal of Radiological Medicine and Protection,2023,43(8):627-632 |
| Investigation on 90Sr and 137Cs activity concentrations in water in Hangzhou urban area from 2012 to 2020 |
| Received:March 11, 2023 |
| DOI：10.3760/cma.j.cn112271-20230311-00070 |
| KeyWords:Hangzhou Water Radionuclide 137Cs to90Sr activity ratio |
| 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（2019KY353，2021KY613，2021KY616，2022KY132，2022KY130，2022RC120，2022ZH030）；浙南放射医学与核技术应用研究院开放课题（ZFY-2021-K-003，ZFY-2022-K-001，ZFY-2022-K-006） |
| Author Name | Affiliation | E-mail | | Wang Peng | 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 | | Ren Hong | Zhejiang Province Center for Disease Control and Prevention, Hangzhou 310051, China | | | Zhou Lei | 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 | | | Zhao Yaoxian | Zhejiang Province Center for Disease Control and Prevention, Hangzhou 310051, China | | | Lai Zhongjun | Zhejiang Province Center for Disease Control and Prevention, Hangzhou 310051, China | | | Xuan Zhiqiang | Zhejiang Province Center for Disease Control and Prevention, Hangzhou 310051, China | |
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| Abstract:: |
| Objective To investigate the activity concentrations of 90Sr and 137Cs in water in Hangzhou urban area.Methods From 2012 to 2020, Qiantang River water as an important drinking water source, tap water as direct drinking water for residents, and West Lake water in tourists crowded area were selected forwater quality monitoring with respect to conctnts of 90Sr and 137Cs. The activity concentrations of 90Sr and 137Cs in water samples, as collected in wet and dry seasons resepectively, were determined by radiochemical analysis, with the 137Cs to 90Sr activity ratios obtained.Results From 2012 to 2020, the activity concentrations of 90Sr and 137Cs in tap water were (2.0±1.1)-(7.4±0.4) mBq/L and (0.45±0.06)-(7.1±0.6) mBq/L, respectively. The 137Cs to 90Sr activity ratios ranged from 0.07 to 2.40. The activity concentrations of 90Sr and 137Cs in Qiantang River were (3.7±1.1)-(17.0±4.4) mBq/L and (0.28±0.01)-(15.0±4.5) mBq/L, respectively. The 137Cs to 90Sr activity ratios ranged from 0.03 to 0.90. The activity concentrations of 90Sr and 137Cs in West Lake water were (2.2±0.5)-(11.0±2.0) mBq/L and (0.32±0.04)-(7.9±1.9) mBq/L, respectively. The 137Cs to 90Sr activity ratios ranged from 0.05 to 1.20.Conclusions The activity concentrations of 90Sr and 137Cs in water in Hangzhou urban area were at the background levels, lower than the concentration limits, 10 Bq/L both for 90Sr and 137Cs recommended by WHO in the 4th edition of Guidelines for Drinking Water Quality. |
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