| Cao Yiyao,Zhao Dong,Yu Shunfei,Zhang Meibian,Zou Hua,Xuan Zhiqiang,Lai Zhongju,Zhao Yaoxian,Wang Peng,Ren Hong.Investigation on 90Sr level in offshore seawater and seafood therein around Sanmen nuclear power plant site and assessment of committed effective dose from 2015 to 2019[J].Chinese Journal of Radiological Medicine and Protection,2021,41(4):288-292 |
| Investigation on 90Sr level in offshore seawater and seafood therein around Sanmen nuclear power plant site and assessment of committed effective dose from 2015 to 2019 |
| Received:December 21, 2020 |
| DOI：10.3760/cma.j.issn.0254-5098.2021.04.009 |
| KeyWords:Sanmen nuclear power plant Seawater Seafood Radioactivity level of 90Sr Annual committed effective dose |
| 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） |
| Author Name | Affiliation | E-mail | | Cao Yiyao | Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310051, China | | | Zhao Dong | Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310051, China | | | Yu Shunfei | Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310051, China | | | Zhang Meibian | Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310051, China | | | Zou Hua | Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310051, China | | | Xuan Zhiqiang | Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310051, China | | | Lai Zhongju | Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310051, China | | | Zhao Yaoxian | Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310051, China | | | Wang Peng | Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310051, China | | | Ren Hong | Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310051, China | hren@cdc.zj.cn |
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| Abstract:: |
| Objective To investigate and analyze the radioactivity level of 90Sr in offshore seawater and seafood therein around Sanmen nuclear power plant (NPP) and to estimate the annual committed effective dose to local population from ingestion of 90Sr in seafood from 2015 to 2019. Methods From 2015 to 2019, the offshore seawater and 3 kinds of marine products grown locally in Sanmen and consumed by local residents were collected for measurement of the level of 90Sr radioactivity. The committed effective doses to the local population were estimated based on monitoring result and consumption data on seafood in Zhejiang offshore. Results The radioactivity concentrations of 90Sr ranged from 2.4 to 4.1 mBq/L in the seawater, close to the natural radioacrive background level and from 6.7×10-2 to 1.3 Bq/kg in seafood, lower than the standard values specified in the "Limited concentrations of radioactive materials in foods" (GB 14882-94). Annual committed effective dose to the local population from 90Sr attributable to consumption of seafood in Sanmen County from 2015 to 2019 were 2.2×10-4-4.2×10-4mSv, respectively, far lower than the worldwide committed effective dose result ing from internal exposure. Conclusions From 2015 to 2019, the radioactivity concentration of 90Sr in seawater and seafood are stable, with neglectable dose burden to the local population. |
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