Determination of specific activity of ^(230)Th in uranium ore samples  

作　　者：ZHAO Yunlong, GU Dingxiang, LI Ronghui, DENG Gang, LIANG Yutang, WU Zhaohui, HUANG Qiuhong, TIAN Guiying, WANG Bin & CHEN CaifangBeijing Research Institute of Uranium Geology, Beijing 100029, China 

出　　处：《Chinese Science Bulletin》2000年第3期264-267,共4页

摘　　要：A new method suitable for determining specific activity of 230Th in uranium ore samples is built. The method is characterized by adding the 230Th/ 232Th standard dilution agent with lower activity ratio (Its 230Th/ 232Th activity ratio and Th have been known) to the samples and using isotopic dilution analysis. The method can be applied to analyses of 230Th specific activity in various 230Th/ 232Th activity ratio samples. The precision can also be improved.A new method suitable for determining specific activity of 230Th in uranium ore samples is built. The method is characterized by adding the 230Th/ 232Th standard dilution agent with lower activity ratio (Its 230Th/ 232Th activity ratio and Th have been known) to the samples and using isotopic dilution analysis. The method can be applied to analyses of 230Th specific activity in various 230Th/ 232Th activity ratio samples. The precision can also be improved.

关 键 词：²³⁰Th/ ²³²Th ACTIVITY RATIO ²³⁰Th specific ACTIVITY ACTIVITY RATIO DILUTION analysis URANIUM ores. 

分 类 号：P619.14[天文地球—矿床学]