海水中放射性核素238U、232Th、60Co、137Cs浓集实验

摘要

238U,232Th,60Co,137Cs in seawater are detected in accordance with the Rules for Concentration of Gamma-emitters in Seawater. The experiment indicates that the recovery rates of 238U,232Th,60Co,137Cs measured are 82.5%, 79.3%, 80.3% and 91.3%, respectively. The measurement of Z3Su would be more accurate 96 days after sample preparation.%采用广东省环境辐射监测中心编制的操作规程《海水中γ核素浓集方法实施细则》分析了环境海水样品的γ放射性核素238U、232Th、60Co、137Cs，该方法的238U、232Th、60Co、137Cs的回收率分别为82．5％、79．3％、80．3％、91．3％；制样放置约90d后测量238U的数据更准确。