| Wang Peng,Cao Yiyao,Zou Yinjie,et al.Analysis on levels of 90Sr and 137Cs in diet of residents in Hangzhou[J].Chinese Journal of Radiological Medicine and Protection,2026,46(5):535-539 |
| Analysis on levels of 90Sr and 137Cs in diet of residents in Hangzhou |
| Received:September 19, 2024 |
| DOI：10.3760/cma.j.cn112271-20240919-00359 |
| KeyWords:Hangzhou Daily diet 90Sr 137Cs |
| FundProject:浙江省"尖兵领雁+X"研发攻关计划(2024C03229);浙江省卫生健康科技计划(2024KY903, 2024KY892);浙南放射医学与核技术应用研究院开放课题(ZFY-2022-K-001, ZFY-2022-K-006, ZFY-2023-K-001) |
| Author Name | Affiliation | E-mail | | Wang Peng | Zhejiang Provincial Center for Disease Control and Prevention Institute of Occupational Health and Radiation Protection, Hangzhou 310051, China | | | Cao Yiyao | Zhejiang Provincial Center for Disease Control and Prevention Institute of Occupational Health and Radiation Protection, Hangzhou 310051, China | yycao@cdc.zj.cn | | Zou Yinjie | Zhejiang Provincial Center for Disease Control and Prevention Institute of Occupational Health and Radiation Protection, Hangzhou 310051, China
Soochow University School of Public Health, Suzhou 215123, China | | | Reng Hong | Zhejiang Provincial Center for Disease Control and Prevention Institute of Occupational Health and Radiation Protection, Hangzhou 310051, China | | | Lai Zhongjun | Zhejiang Provincial Center for Disease Control and Prevention Institute of Occupational Health and Radiation Protection, Hangzhou 310051, China | | | Zhou Lei | Zhejiang Provincial Center for Disease Control and Prevention Institute of Occupational Health and Radiation Protection, Hangzhou 310051, China | | | Yu Shunfei | Zhejiang Provincial Center for Disease Control and Prevention Institute of Occupational Health and Radiation Protection, Hangzhou 310051, China | |
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| Abstract:: |
| Objective To investigate the levels of 90Sr and 137Cs in diet of residents in Hangzhou and its surrounding areas. Methods From 2020 to 2023, the samples of fresh milk, rice, leafy greens, and crucian carp, commonly consumed by Hangzhou residents, were collected from four sampling sites in Lin'an District, a major agricultural production area and Xihu District, a large-scale aquaculture base. Samples of kelp and cuttlefish, which are commonly consumed seafood by Hangzhou residents, were collected from two sampling sites in Zhoushan City, that is the main source of seafood consumed by Hangzhou residents. After the samples were ashed, the activity concentrations of 90Sr and 137Cs were determined by radiochemical method. Results Among 2020 to 2023, the activity concentrations of 90Sr were (0.069±0.015) to (0.22±0.03) Bq/L in fresh milk, (0.011±0.004) to (0.039±0.009) Bq/kg in rice, (0.067±0.025) to (0.20±0.02) Bq/kg in salsola, (0.092±0.007) to (0.84±0.15) Bq/kg in crucian carp, (0.021±0.004) to (0.58±0.10) Bq/kg in kelp, and (0.42±0.10) to (0.62±0.12) Bq/kg in hairtail fish, respectively. The activity concentrations of 137Cs in the analyzed food samples were mostly below the detection limit. The monitoring result during this study are consistent with previous years' data, showing no differences in orders of magnitude. Conclusions The activity concentrations of 90Sr and 137Cs in diet of Hangzhou residents are at the background level. |
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