摘要
提出了一个分析熔岩样品中某些重稀土放射性核素的简捷方法。采用Ｐ５０７柱进行重稀土核素的分离，用Ｘ荧光分析法测定混合重稀土组各成员的化学回收率，用高分辨γ谱仪解谱测量各放射性核素的活度。对于几个重要的重稀土放射性核素，分析的准确度与进行单个稀土分离测定的方法相当。
There are some heavy rare earth radionuclides in the melted rocks,such as￣(160)Tb,￣(168,170)Tm,￣(88,91)Y,￣(174,177)Lu,￣(169)Yb ,etc. Because their contents are very low in the melted rocks and the lightrare earth fission products are interfered with their determination,it is very complicated to mea-sure them quantitatively.So a new method has been studied in which P507 resin is used to sepa-rate and purify the rare earths, radioactive sources are prepared by the pieces of filter paper fordetermining chernical yield with X-fluorescene analysis,and radioactive activity is determined withthe γ-spectra analysis.It is proved that this method has satisfied the demands of experiments.
出处
《核化学与放射化学》
EI
CAS
CSCD
北大核心
1995年第3期142-146,共5页
Journal of Nuclear and Radiochemistry
