加压淋洗色谱法从^(147)Nd中分离^(147)Pm的研究  

SEPARATION OF PROMETHIUM-147 FROM NEODYMIUM-147 BY PRESSURIZED ELUTION CHROMATOGRAPHY

作　　者：张炜[1] 郭治军[1] 冯利邦[1] 刘志安[1] 陈励权 

机构地区：[1]兰州大学化学化工学院,兰州730000

出　　处：《核化学与放射化学》1999年第4期228-232,共5页Journal of Nuclear and Radiochemistry

摘　　要：研究了用加压离子交换法从堆照产物147Nd中分离147Pm。首先用加压排代色谱法确定了堆照产物147Nd中的主要杂质成分,继而用加压淋洗色谱法以α羟基异丁酸(αHIBA)抗坏血酸(Vc)为淋洗剂,从147Nd中分离147Pm,避免了主要杂质152,154Eu对产品147Pm的污染。研究结果表明,当分离条件为:c(αHIBA)=0.30～040molL、c(Vc)=0.05～0.10molL、pH=400～420、线性流速为8～12cmmin时,分离因子β(NdPm)=3.00,β(EuNd)=2.61。A new chemical method based on two separation steps is developed to isolate promethium 147 from neodymium 147. The distribution of radioactive impurities in neodymium 147 is determined by pressurized displacement chromatography with DTPA as an eluent,then promethium 147 is separated from neodymium 147 and remaining contaminants by pressurized elution chromatoigraphy with α hydroxyisobutyric acid ascorbic acid (α HIBA Vc) as an eluent.

关 键 词：加压淋洗色谱 钕147 钜147 分离 加压离子交换法 放射性同位素 

分 类 号：TL922[核科学技术—核燃料循环与材料]