摘要
目的了解宁德核电站运行后核电站周围监测点区域内放射性核素^90Sr放射性水平,并与其对照区域^90Sr放射性水平进行比较。方法在宁德核电站周边30 km范围内的监测点区域及其对照点区域进行布点,采集食品样品,利用二-(2-乙基已基)磷酸脂萃取色层法对食品样品中^90Sr放射性水平进行分析。结果本次调查共完成宁德核电站周围监测区域及对照区域的6大类,30个品种的食品样品中^90Sr放射性水平的分析。监测区域内,谷类薯类及杂豆类样品中^90Sr的放射性比活度范围为0.017~1.830 Bq/kg,蔬菜类样品为0.021~0.318 Bq/kg,水产品类样品为0.007~7.6^90 Bq/kg,畜禽肉类样品为0.009~0.184 Bq/kg。对照区域内,谷类薯类及杂豆类样品中^90Sr含量测量范围为0.017~0.700 Bq/kg,蔬菜类为0.034~0.677 Bq/kg,水产品类为0.038~3.360 Bq/kg,畜禽肉类为0.019~0.054 Bq/kg。结论本次调查的食品中^90Sr放射性水平均远低于我国食品标准限值,食入所致的居民内照射剂量对公众剂量的贡献极低。
Objective To investigate the ^90Sr concentration levels in the monitoring areas and the control area at Ningde Nuclear Power Plant(NPP).Methods Food samples were collected from the monitoring areas in 30 km of Ningde NPP and the control area far away.The radioactive levels of ^90Sr in food samples were analyzed using the chromatography with 2-(2-ethylhexyl)phosphate fast extraction method.Results In this survey,^90Sr radioactive concentrations in 30 varieties of foods in 6 categories were analyzed.In the monitoring area,^90Sr radioactivity concentration in the samples collected were in the range of 0.017-1.830 Bq/kg for cereals,beans and potatoes,0.021-0.318 Bq/kg for vegetables,0.007-7.6^90 Bq/kg for quatic products,and 0.009-0.184 Bq/kg for meats;whereas,in the control area,cereals,beans and potatoes in 0.017-0.700 Bq/kg,vegetables in 0.034-0.677 Bq/kg,aquatic products in 0.038-3.360 Bq/kg,and meats in 0.019-0.054 Bq/kg.Conclusions The ^90Sr radioactive concentrations in foods were far below the food standard limits in this survey.The contribution of evaluated to the public from the ^90Sr in foods was neglectable.
作者
郑琪珊
张燕
黄丽华
郑森兴
赵时敏
刘佳
王德男
刘晰予
Zheng Qishan;Zhang Yan;Huang Lihua;Zheng Senxing;Zhao Shimin;Liu Jia;Wang Denan;Liu Xiyu(Fujian Center for Prevention and Control of Occupational Diseases and Chemical Poisoning,Fuzhou 350025,China;Fuding Center for Diseases Prevention and Control,Fuding 355200,China;The School of Public Health,Fujian Medical University,Fuzhou 350025,China)
出处
《中华放射医学与防护杂志》
CAS
CSCD
北大核心
2019年第12期931-935,共5页
Chinese Journal of Radiological Medicine and Protection
