某铀尾矿库下游水体及表层沉积物中铀污染特征  

Pollution of Uranium Contents in Water and Surface Deposit Downstream of a Uranium Tailing Repository

作　　者：宋刚[1] 冯颖思[1] 王津[1] 陈迪云[1] 陈永亨[1] 

机构地区：[1]广州大学环境科学与工程学院,珠江三角洲水质安全与保护省部共建教育部重点实验室,广东省放射性核素污染控制与资源化重点实验室,广东广州510006

出　　处：《环境科学与技术》2013年第9期159-162,168,共5页Environmental Science & Technology

基　　金：国家自然科学基金重点项目(40930743);广州大学珠江三角洲水质安全与保护实验室开放基金

摘　　要：沿粤北某铀尾矿库下游水体采集14个水样和11个表层水系沉积物样品,利用电感耦合等离子体原子发射光谱法(ICP-OES)和低本底HPGe-γ能谱仪分别测量了水样和沉积物中铀含量。结果表明,沿着水流方向,水体中铀浓度由2.091 mg/L降到当地环境本底水平0.002 mg/L。流入水库前,水体中铀含量均超过0.05 mg/L。排水口附近以及下游水库中表层沉积物样品的铀含量比溪流中段的高,特别是水库沉积物中含铀703.1 mg/kg,可能会对水质造成长期影响。Distribution of uranium contents in 14 waters and 11 surface deposits from the downstream of a uranium tailing repository was detected directly by ICP-OES and HPGe-y energy spectrometer respectively. Results indicated that U contents in waters ranged from 2.091 to 0.002 mg/L which was the same as the background level along the stream. U contents all exceeded 0.05 mg/L for surface water before flowing into the reservoir. The contents of U in the deposit samples around the outflow and in reservoir were higher than the middle reach, especially the contents of U attained to 703.1 mg/kg in reservoir deposit, which would affect water quality for a long time.

关 键 词：铀 水 沉积物 ICP-OES HPGe-γ能谱仪 

分 类 号：X591[环境科学与工程—环境工程]