核化学与放射化学Issue(2)：92-96,5.DOI:10.7538/hhx.2014.36.02.0092
171 Tm的中子活化生产和离子交换色层分离
Preparation Method of 171 Tm by Neutron Irradiation and Ion Exchange Chromatography Separation
李华 1黄萍 1张继红 1万俊生1
作者信息
- 1. 西北核技术研究所，陕西 西安 710024
- 折叠
摘要
Abstract
The possibility of neutron capture production of 171 Tm using natural erbium oxide as target material was investigated by irradiation in the middle hole of Xi’an pulsed reactor. The influence of isotope composition of erbium and amount of target material was investiga-ted.Ion-exchange chromatography method using Dowex50×8-400 and 2-hydroxyisobutyric acid (2-HIBA)was performed to separate Tm from the activated material.The influence of sample load,fluent pH,length of the resin bed and temperature on the separation was discussed.Experiment results show that,(1)the composition and the amount of the target material have little influence on the activated productivity of 171 Tm;(2)the sample load,the pH of fluent,the length of the resin bed and the temperature affect remarkably on the separation.The optimized separation condition isϕ1.4 cm×17.5 cm resin bed with 25 mg of Er3+ load,temperature higher than 25 ℃,and pH=4.00 and pH=4.05 as fluent pH of Yb3+ and Tm3+,separately.Under the optimized condition,the recovery of Tm is higher than 95%,and the decontamination factors of Tm3+ to Yb3+ and Er3+ are higher than 1 000.关键词
中子活化/离子交换色层法/2-羟基异丁酸/铒/铥/镱Key words
neutron activated/ion-exchange chromatography/2-hydroxyisobutyric acid/Er/Tm/Yb分类
化学化工引用本文复制引用
李华,黄萍,张继红,万俊生..171 Tm的中子活化生产和离子交换色层分离[J].核化学与放射化学,2014,(2):92-96,5.
