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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。
This paper mainly introduces three kinds of chemical methods to extract and purify 129I and 36Cl from the Lianshanguan uranium deposit and groundwater: (1) The two halides of 129I and 36Cl are extracted from uranium ore and surrounding rock by vacuum distillation in the form of I2 and HCl Collected in a cold trap, prepared after purification AgI and AgCl measured by AMS its atomic number. (2) The ion exchange method was used to extract 129I from the groundwater in the mining area, and then purified by extraction to prepare AgI to determine its atomic number by AMS. (3) Using precipitation method to extract 36Cl from the groundwater in the mining area, and then preparing AgCl by Aseptic Purification to determine its atomic number. The geochemical behaviors and migration rules of fission products in uranium deposits and groundwater are summarized through the measurement results. The experimental results can be used as a reference for the design of high-level nuclear waste repository.