薛惠元,张世翔,刘坤,张烨锋,李圣日,万骏,崔凤梅,涂彧,孙亮.斑马鱼计算模型构建与相关剂量系数的计算[J].中华放射医学与防护杂志,2021,41(5):374-379
斑马鱼计算模型构建与相关剂量系数的计算
Establishment of zebrafish calculation model and calculation of relative dose coefficients
投稿时间:2021-01-11  
DOI:10.3760/cma.j.issn.0254-5098.2021.05.010
中文关键词:  蒙特卡罗  环境评价  核电  液态流出物  斑马鱼
英文关键词:Monte Carlo  Environmental assessment  Nuclear power  Liquid effluent  Zebrafish
基金项目:国家自然科学基金(U1867204);核能开发项目(2016-1295号)
作者单位E-mail
薛惠元 苏州大学医学部放射医学与辐射防护重点实验室 江苏省高校放射医学协同创新中心 215123  
张世翔 苏州大学医学部放射医学与辐射防护重点实验室 江苏省高校放射医学协同创新中心 215123  
刘坤 苏州大学医学部放射医学与辐射防护重点实验室 江苏省高校放射医学协同创新中心 215123  
张烨锋 苏州大学医学部公共卫生学院 215123  
李圣日 苏州大学医学部放射医学与辐射防护重点实验室 江苏省高校放射医学协同创新中心 215123  
万骏 苏州大学医学部放射医学与辐射防护重点实验室 江苏省高校放射医学协同创新中心 215123  
崔凤梅 苏州大学医学部放射医学与辐射防护重点实验室 江苏省高校放射医学协同创新中心 215123  
涂彧 苏州大学医学部放射医学与辐射防护重点实验室 江苏省高校放射医学协同创新中心 215123  
孙亮 苏州大学医学部放射医学与辐射防护重点实验室 江苏省高校放射医学协同创新中心 215123 slhmz666@suda.edu.cn 
摘要点击次数: 1854
全文下载次数: 1124
中文摘要:
      目的 为了评估核电对周围环境的辐射影响,通过模式动物精细化建模,构建剂量评估模型并确定相关剂量系数。方法 针对核电液态流出物辐射危害评估中的重要水生模式生物斑马鱼,建立用以剂量估算的斑马鱼含有内部骨骼和内脏器官的几何模型。使用蒙特卡罗方法,以核电液态流出物及周围环境监测中常见的3H、40K、58Co、60Co、110Ag、134Cs、137Cs 7种核素为源项,计算斑马鱼模型的内外照射剂量系数(DC)。结果 核素γ能量的高低决定了外照射剂量系数的大小。对内脏器官、骨骼和全身的外照射剂量系数比较显示,大部分核素内脏器官剂量系数高于全身剂量系数,58Co的内脏器官剂量系数比全身高165%。本研究建立模型内照射剂量系数较大,60Co造成的内照射剂量系数是已有椭球模型剂量系数的2.6倍,说明内部材料的不同和粒子种类不同的选择会影响能量沉积。结论 对模式生物进行精细化建模比较重要。精确评估模式生物器官剂量系数,有助于评估非人类物种的辐射效应。
英文摘要:
      Objective To assess impact of radiation from nuclear power on the surrounding environment, a dose assessment model was constructed and relevant dose coefficients were determined through refined animal models. Methods Zebrafish is one of the most important aquatic model animals in the radiation hazard assessment of nuclear power liquid effluent. A geometric model of zebrafish containing internal bones and visceral organ was established for dose estimation. The internal and external dose coefficients (DC) of the zebrafish model were calculated by Monte Carlo method with seven nuclides as the source term, 3H,40K,58Co,60Co,110Ag,134Cs,137Cs, which are common in nuclear liquid effluents and environmental monitoring. Results The level of nuclide gamma energy determines dose coefficients for external radiation. The dose coefficients of most nuclides in internal organs was higher than that in whole body, and the internal organ dose of 58Co was 165% higher than that in whole body. The internal radiation dose coefficients of the model established in this study was relatively high, and the internal radiation dose coefficients caused by 60Co was 2.6 times of existing ellipsoid model, which suggested that the different internal materials and the choice of different particle types would affect the energy deposition. Conclusions Refining of model animals is important. Accurate assessment of the organs dose coefficients of model animals is helpful to assess the radiation effects on non-human species.
HTML  查看全文  查看/发表评论  下载PDF阅读器
关闭