某铀矿山及其周边地下水中放射性核素污染调查与评价  

Investigation and Evaluation of Radionuclides in Groundwater of Uranium Mine and Its Surrounding Areas

作　　者：徐魁伟[1] 高柏[1] 刘媛媛[1] 张春艳[1] XU Kui-wei GAO Bai LIU Yuan-yuan ZHANG Chun-yan(School of Water Resources and Environmental Engineering, East China University of Technology, Nanchang 330013,)

机构地区：[1]东华理工大学水资源与环境工程学院,南昌330013

出　　处：《有色金属（冶炼部分）》2017年第7期58-61,共4页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家自然科学基金资助项目(41362011;41162007)

摘　　要：为了解某铀矿山及周边地区地下水中放射性核素的污染特征及其影响,分别对研究区于丰水期、平水期和枯水期各采集了20个钻孔地下水样品进行测试,分析了^(238)U、^(230)Th、^(226)Ra、^(210)Pb和^(210)Po五种放射性核素的含量,并采用国标推荐的公式对周边居民因饮水所导致的内照射剂量进行了估算。结果表明,研究区地下水中未检出^(230)Th,^(238)U、^(226)Ra、^(210)Pb和^(210)Po的平均检出浓度分别为1.31μg/L、28.09mBq/L、13.98mBq/L和12.68mBq/L,由放射性核素所导致的总待积有效剂量为2.44×10-5 Sv,不会对人群构成明显危害。To assess characteristics of radionuclides pollution and its influence in uranium mine and its surrounding areas, 20 groundwater samples were collected in wet, normal, and dry season, respectively, to measure concentrations of ^238U, ^230Th, ^226Ra, ^210Pb, and ^210Po. Internal exposure dose caused by drinking water around uranium mine was evaluated by national standard. The results show that no ^230Th is checked out in groundwater of studied area. Average concentration of ^238U, ^226Ra, ^210Pb, and ^210Po is 1.31 μg/L, 28.09 mBq/L, 13.98 mBq/L, and 12.68 mBq/L, respectively. Total internal exposure dose caused by radioactive nuclides is 2.44 × 10^-5 Sv, lower than the reference level from WHO, with no significant hazards to people.

关 键 词：铀矿山 地下水 放射性核素 内照射剂量 

分 类 号：X591[环境科学与工程—环境工程]