石岛湾核电站周边食品放射性水平及所致居民剂量  

The radioactivity levels of food and the dose in residents due to food intake around Shidaowan Nuclear Power Plant

作　　者：张巍[1] 夏春冬[1] 张显鹏[1] 柳怡[1] 王新云[1] ZHANG Wei;XIA Chundong;ZHANG Xianpeng;LIU Yi;WANG Xinyun(Shandong Center for Disease Control and Prevention,Jinan 250014 China)

机构地区：[1]山东省疾病预防控制中心,山东济南250014

出　　处：《中国辐射卫生》2023年第3期254-258,共5页Chinese Journal of Radiological Health

基　　金：山东省医药卫生科技发展计划项目(202012071286)。

摘　　要：目的调查石岛湾核电站周边食品中放射性核素水平,评估当地居民因食入所致待积有效剂量。方法2019—2022年在距核电站30 km半径内取居民日常食用的食品,进行核电站运行前、运行后的放射性水平监测,监测结果结合山东省居民膳食消费量进行居民待积有效剂量估算。结果经监测石岛湾核电站周边地区食品中天然放射性核素^(238)U、^(232)Th、^(226)Ra、^(40)K均为正常本底水平,平均值分别为(0.062±0.004)、(0.121±0.007)、(0.162±0.010)、(92.4±5.5)Bq/kg(鲜重)。部分食品中检出微量137Cs和90Sr,平均值分别为(0.047±0.003)和(0.193±0.200)Bq/kg(鲜重)。核电站运行后与运行前比较,放射性核素水平未见增加。当地居民因食入所致的年待积有效剂量约为0.205 mSv。结论石岛湾核电站周边地区食品放射性水平在运行前后未见变化,人群剂量负担轻微。Objective To analyze the radionuclide levels in food and the committed effective dose due to food intake in residents around the Shidaowan Nuclear Power Plant(SNPP).Methods Daily food samples were collected within 30 km radius around the nuclear power plant in 2019—2022.The radioactivity levels before and after the operation of SNPP were determined.The data were combined with the dietary consumption of residents in Shandong province,China to estimate the committed effective dose.Results The radionuclides^(238)U,^(232)Th,^(226)Ra,and^(40)K in food were at normal background levels,and the average radioactivity was(0.062±0.004),(0.121±0.007),(0.162±0.010),and(92.4±5.5)Bq/kg fresh weight.Trace 137Cs and 90Sr were detected in some food samples and the average radioactivity was(0.047±0.003)and(0.193±0.200)Bq/kg fresh weight.The levels of radionuclides did not increase after the operation of SNPP compared with that before operation.The estimated committed effective dose in residents due to food intake was 0.205 mSv.Conclusion The radioactivity of food in the area around SNPP shows no difference before and after operation,and the dose burden is low in local residents.

关 键 词：核电站 食品放射性水平 放射性核素 有效剂量 

分 类 号：X591[环境科学与工程—环境工程]