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.
出处
《铀矿地质》
CSCD
北大核心
1994年第4期242-248,共7页
Uranium Geology
