| 赖忠俊,曹艺耀,郭佳娣,等.首台AP1000核电厂周围食品中γ放射性核素污染风险水平调查[J].中华放射医学与防护杂志,2025,45(12):1188-1193.Lai Zhongjun,Cao Yiyao,Guo Jiadi,et al.Investigation of risk level of γ radionuclides contamination in food around the first AP1000 Nuclear Power Plant[J].Chin J Radiol Med Prot,2025,45(12):1188-1193 |
| 首台AP1000核电厂周围食品中γ放射性核素污染风险水平调查 |
| Investigation of risk level of γ radionuclides contamination in food around the first AP1000 Nuclear Power Plant |
| 投稿时间：2024-09-20 |
| DOI：10.3760/cma.j.cn112271-20240920-00365 |
| 中文关键词: AP1000 γ放射性核素 风险评估 |
| 英文关键词:AP1000 γ-radionuclide Risk assessment |
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| 中文摘要: |
| 目的 调查首台AP1000核电厂周围食品中γ放射性核素污染风险水平。方法 在核电厂周围30 km范围内布设食品监测采样点，分别在核电机组商运前6年和商运后5年选择蔬菜、粮食、禽畜肉、海产品、淡水产品作为研究对象。使用高纯锗γ能谱仪对采集的食品样品进行天然放射性核素(40K、238U、226Ra、228Ra)和人工放射性核素(54Mn、65Zn、95Zr、58Co、60Co、106Ru、110Agm、125Sb、131I、134Cs、137Cs、144Ce)检测。根据国际原子能机构(IAEA)剂量估算方法估算核电厂商运前后所致周围人群待积有效剂量，评估人群健康风险。结果 商运前后核电厂周围食品中天然放射性核素水平变化不存在明显差异，除137Cs外，其余人工放射性核素均小于探测下限(DLL)，核电厂商运前后蔬菜类、粮食类、禽畜肉、海产品和淡水产品中137Cs的平均含量分别为0.001、0.004、0.019、0.022 Bq/kg、＜DLL和0.005 Bq/kg、＜DLL、0.021、0.005 Bq/kg、＜DLL。结果表明核电厂商运前后食品中137Cs的浓度水平不存在显著差异。核电厂商运前后食品中放射性核素所致当地居民待积有效剂量分别为138.66和215.89 μSv。结论 首台AP1000核电机组商运后对周围食品污染风险和人群健康风险均处于低水平。 |
| 英文摘要: |
| Objective To study the risk level of γ radioactive contamination in food around the first AP1000 Nuclear Power Plant(AP1000).Methods In accordance with of the relevant national standards, food monitoring points were set up within 30 km of the AP1000. Vegetables, grain, livestock and meat, seafood and fresh water products were sampled for the study of radioactivity levels in foods both six years prior to and five years post the commercial operation of the AP1000. Natural radionuclides (40K, 238U, 226Ra, 228Ra) and artificial radionuclides (54Mn, 65Zn, 95Zr, 58Co, 60Co, 106Ru, 110Agm, 125Sb, 131I, 134Cs, 137Cs, 144Ce) in food samples were detected by using HPGe gamma spectrometer. The committed effective doses were estimated on the basis of dose estimation method as recommended by the IAEA to evaluate the health risk before and after the operation of the AP1000.Results No significant differences were found in the levels of natural radioactivity in the foods around the AP1000 before and after the operation. All the artificial radionuclides but 137Cs were found to have the radioactivity levels less than the respective detection lower limit(DLL). The average activity concentration of 137Cs in vegetables, grains, poultry and livestock, seafood and fresh water products was 0.001, 0.004, 0.019, 0.022 Bq/kg, < DLL prior to operation and 0.005 Bq/kg, < DLL, 0.021, 0.005 Bq/kg, < DLL post operation, respectively. The result showed that there was no significant difference in the activity levels of 137Cs in foods before and after the operation. The committed effective dose to local residents surrounding the APP1000 site before and after the plant operation were estimated to be 138.66 and 215.89 μSv, respectively.Conclusions It is concluded that both the radioactivity levels in foods and the health risks to the local residents are found to be negligible after the operation of AP1000. |
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