长江流域鲤鱼和鲟鱼的模型建立与剂量率估算研究

摘要

In view of the two kinds of freshwater fish in the Yangtze river basin - carp and sturgeon, this article studied con-centration coefficient of various parts of the two species of fish by experiments,established the simplified anatomical model of the two types of fish ( distinguish between different tissues and organs) and external exposure environment model. Using MonteCarlo method to simulate the energy deposition from source organs and environmental water to target organs, the paper calculated inter-nal and external irradiation dose rate of two types of fish from a site data and experiment consequence. By compare with the results of ERICA, the results show that dose rate of two types of fish are lower than dose rate reference level of ERICA.%针对长江流域两种典型淡水鱼类-鲤鱼和鲟鱼,通过实验对两种鱼类各部分的浓集性质进行了研究,并建立了相关的的简化解剖学模型(区分了不同组织和器官部分)和外照射环境模型;用蒙特卡罗方法模拟源器官和环境水体对靶器官的能量沉积,采用某厂址水体数据以及实验得到的鱼类不同部位的浓集系数,估算了上述两种鱼类在该环境中所受到的内外照射剂量率,并与ERICA方法进行了比较分析.