广西某铀矿山周围土壤和大米放射性调查及评价  

Radioactive Investigation and Evaluation of Soil and Rice Around the Uranium Mine in Guangxi

作　　者：张家佳 彭崇 郭凯行 李秀媚 许泽钺 ZHANG Jiajia;PENG Chong;GUO Kaihang;LI Xiumei;XU Zeyue(Radiation Environment Supervision and Management Station of Guangxi Zhuang Autonomous Region,Nanning 530222,China)

机构地区：[1]广西壮族自治区辐射环境监督管理站,广西南宁530222

出　　处：《铀矿冶》2023年第1期91-96,共6页Uranium Mining and Metallurgy

摘　　要：在调查研究2016—2021年广西地区某铀矿山附近土壤中的^(238)U、^(226)Ra及种植大米中的^(238)U、^(226)Ra、^(210)Po、^(210)Pb等放射性核素活度浓度的基础上,对其进行了评价。Spearman秩相关系数分析显示,在2016—2021年铀矿山周围土壤和大米中的^(238)U、^(226)Ra、^(210)Po、^(210)Pb等没有显著变化,大部分采样点土壤污染程度属于无污染到中污染。待积有效剂量率依^(210)Po、^(210)Pb、^(226)Ra、^(238)U顺序降低,USEPA健康风险模型计算结果显示健康总风险低于不可接受值。The activity concentrations of ^(238)U and ^(226)Ra in soil,and the activity concentrations of ^(238)U,^(226)Ra^(210)Po,^(210)Pb in rice near the uranium mine in Guangxi from 2016 to 2021,were investigated and evaluated.Spearman rank correlation coefficient analysis showed that ^(238)U,^(226)Ra,^(210)Po,^(210)Pb in the soil and rice around the uranium mine had not obviously changed from 2016 to 2021.Most of the sampling sites were pollution-free to medium-polluted.The rate of contribution in effective dose to be accumulated decreased in the order of ^(210)Po,^(210)Pb,^(226)Ra and ^(238)U,and the USEPA health risk model showed that the total health risk was lower than the unacceptable value.

关 键 词：放射性核素 Spearman秩相关系数分析 地质累积指数法 待积有效剂量率 USEPA健康风险 

分 类 号：X820.4[环境科学与工程—环境工程]