L边密度计稳定性监控及U、Pu测量  

Stability Monitoring of L-edge Densitometer and Measurement of U and Pu

作　　者：康海英[1] 罗中艳[1] 郑维明[1] 陶苗苗[1] 朱海巧[1] 张彤[1] 刘联伟[1] 刘桂娇[1] KANG Haiying;LUO Zhongyan;ZHENG Weiming;TAO Miaomiao;ZHU Haiqiao;ZHANG Tong;LIU Lianwei;LIU Guijiao(Department of Radiochemistry,China Institute of Atomic Energy,Beijing 102413,China)

机构地区：[1]中国原子能科学研究院放射化学研究所,北京102413

出　　处：《原子能科学技术》2020年第5期903-907,共5页Atomic Energy Science and Technology

摘　　要：本文采用金属Zr片作为质控样品监控L边密度计的长期稳定性,在此基础上采用L边密度计测量系列水相U标准溶液和水相Pu标准溶液,绘制水相U工作曲线和水相Pu工作曲线,建立了L边密度计测量U、Pu的分析方法,并采用该工作曲线测量了系列U和Pu标准溶液。结果显示,该方法既可测量水相U、Pu,也可测量有机相U、Pu,对于10 g/L以上的U溶液,测量结果的相对偏差小于5%;对于5 g/L以上的Pu溶液,测量结果的相对偏差小于1.7%。以上结果表明,本文所建立的L边密度计测量U、Pu的方法准确度良好,可用于实际U、Pu的测量。Metal Zr tablet was used as quality control sample to monitor the long-term stability of L-edge densitometer,on which L-edge densitometer was used to measure the series of U reference solutions and Pu reference solutions in aqueous phase,and the U calibration curve and Pu calibration curve were drawn.The analytical methods for measuring U and Pu were established.The calibration curves were used to measure U and Pu reference solutions.The results show that the methods could measure both U and Pu in aqueous phase and organic phase.For the solution with U concentration above 10 g/L,the relative deviation of measurement results is less than 5%.For the solutions with Pu concentration above 5 g/L,the relative deviation of measurement results is less than 1.7%.It indicates that the method of measuring U and Pu with L-edge densitometer established in this paper has good accuracy and can be used for the measurement of U and Pu in practice.

关 键 词：L边密度计 质控样品 高浓U 高浓Pu 

分 类 号：O654.7[理学—分析化学] TL271[理学—化学]