居民主要食入蔬菜中210Po含量及所致公众内照射剂量估算  

210Po content in vegetables eaten by residents and estimation of internal exposure dose

作　　者：张壮壮 文富平[1] 徐旭涛[1] 娄海林[1] 潘竞舜[1] 李晓芸[1] 郑一凡 ZHANG Zhuangzhuang;WEN Fuping;XU Xutao;LOU Hailin;PAN Jingshun;LI Xiaoyun;ZHENG Yifan(China Institute of Atomic Energy,Beijing 102413 China)

机构地区：[1]中国原子能科学研究院,北京102413

出　　处：《中国辐射卫生》2020年第3期263-267,共5页Chinese Journal of Radiological Health

基　　金：放射性核素快速检测方法及同步鉴定体系的创建(2018YFC1602506)。

摘　　要：目的为了调查市售蔬菜中210Po的放射性水平,评价其对居民的影响。方法通过市场购买叶菜类、果菜类等14种蔬菜,使用湿式消解与银片自沉积结合的方法测量各种蔬菜中210Po活度浓度水平,与相关文献中的参考值进行对比,并进行内照射剂量估算。结果此次研究所选取的14种蔬菜中,活度浓度范围在8.34×10^−3~1.27 Bq/kg(鲜)。菌类的香菇210Po含量最高,为1.27 Bq/kg,高于其他几类蔬菜,叶菜类210Po含量其次,范围在1.30×10^−2~1.74×10^−1 Bq/kg,根茎类的两种蔬菜活度浓度范围在1.77×10^−2~3.51×10^−2 Bq/kg,果菜类六种蔬菜范围在8.34×10^−3~6.19×10^−2 Bq/kg。经估算居民通过这14种蔬菜摄入210Po的量为24.3 Bq/a,所致内照射剂量29.2μSv/a。结论此次调查的市售蔬菜中210Po水平属于正常水平,不会对居民健康产生影响。Objective In order to investigate the radioactive level of 210Po in vegetables and evaluate its impact on residents.Method 14 types of vegetables such as leafy vegetables and fruit vegetables were purchased through the market.The activity concentration of 210Po in these vegetables was measured using a combination of wet digestion and silver flake self-deposition,and compared with reference values in related literatures,and the internal irradiation dose was estimated.Results Among the 14 kinds of vegetables selected in this research,the activity concentration range is 8.34×10^−3 to 1.27 Bq/kg(fresh).The content of 210Po in shiitake mushrooms is 1.27 Bq/kg,which is higher than other vegetables.The content of 210Po in leafy vegetables is second,and the activity concentration range is 1.30×10^−2~1.74×10^−1 Bq/kg.The concentration range of tubers vegetables is from 1.77×10^−2 to 3.5×10^−2 Bq/kg,and the six fruit vegetables from 8.34×10^−3 to 6.19×10^−2 Bq/kg.It is estimated that the amount of 210Po ingested by residents through these vegetables is 24.3 Bq,resulting in an internal radiation dose of 29.2μSv.Conclusion The radioactive level of 210Po in the vegetables in this investigation is normal and will not affect the health of residents.

关 键 词：蔬菜 半导体α谱仪 210Po含量 剂量估算 

分 类 号：X591[环境科学与工程—环境工程]