从铀矿床及地下水中提取及纯化^(129)I及^(36)Cl的化学方法及应用  被引量:2

CHEMICAL METHODS OF EXTRACTING AND PURIFYING  ̄(129)I AND  ̄(36)Cl FROM THE URANIUM DEPOSIT AND GROUND WATER AND THEIR APPLICATION

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作  者:郭起凤 陈璋如[1] 赵云龙[1] 肖丰[1] 

机构地区:[1]核工业北京地质研究院

出  处:《铀矿地质》1994年第4期242-248,共7页Uranium Geology

摘  要:本文主要介绍从连山关铀矿床及地下水中提取及纯化129I及36Cl的3种化学方法:(1)利用真空蒸馏法从铀矿石及围岩中提取129I及36Cl两个卤素以I2及HCl形式收集于冷阱中,经纯化后制备成AgI及AgCl经AMS测出其原子数。(2)利用离子交换法从矿区地下水中提取129I,再经萃取纯化制备成AgI经AMS测出其原子数。(3)利用沉淀法从矿区地下水中提取出36Cl并经多次纯化后制备成AgCl送AMS测出其原子数。通过测量结果总结出铀矿床及地厂水中裂变产物的地球化学行为及迁移规律。实验结果可供高放核废物处置库设计参考。Three methods for extracting and purifying 129I and 36Cl from the uranium deposit andground water in Lianshanguan are described. (1)129I and 36Cl (in the form of I2 and HCl, respectively)were distilled over into a liquid-N2 trap. After further purification the two handeswere precipitated as AgI and AgCl and determined by AMS. (2)129I was extracted fromground water in the deposit by ion-exchange and purified by liquid extraction,and the AGIprepared was determined by AMS. (3)36Cl was precipitated as AgCl and determined by AMSafter repeated purification. The results have revealed geochemistry and migration behavioursof the fission products in the uranium deposit and ground water and can be applied as a usefulreference for designing high level radioactive waste repository.

关 键 词:铀矿床 放射性废物 碘129 氯36 

分 类 号:TL942.1[核科学技术—辐射防护及环境保护]

 

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