| 放射化学分离裂变产物中^79Se的新流程 |
| |
| 引用本文： | 李春生,郭景儒.放射化学分离裂变产物中^79Se的新流程[J].核化学与放射化学,1998,20(1):1-6. |
| |
| 作者姓名： | 李春生 郭景儒 |
| |
| 作者单位： | 中国原子能科学研究院放射化学研究所 |
| |
| 摘 要： | 因加速器质谱法（ＡＭＳ）测定＾７９Ｓｅ半衰期的需要，建立了一个从裂变产物中放化分离＾７９Ｓｅ的新流程。流程以硝基苯萃取－二氧化硫沉淀为主要步骤，避免了经典的ＳｅＢｒ４蒸馏法带来的＾７９Ｂｒ对＾７９Ｓｅ的同量素污染。流程的化学回收率大于６０％，对所要分离的各种放射性核素的去污能力满足要求。采用液闪方法测量＾７９Ｓｅ的放射性活度，并对影响活度测量的各种因素进行了详细的研究。用本流程获得的＾７９Ｓｅ可成
|
| 关 键 词： | 放射化学分离 裂变产物 硒79 半衰期 核废物 |
A NEW RADIOCHEMICAL PROCEDURE FOR SEPARATING 79 Se FROM FISSION PRODUCTS |
| |
| Li Chunsheng,Guo Jingru,Li Daming,Sun Hongqing,Cui Anzhi.A NEW RADIOCHEMICAL PROCEDURE FOR SEPARATING 79 Se FROM FISSION PRODUCTS[J].Journal of Nuclear and Radiochemistry,1998,20(1):1-6. |
| |
| Authors: | Li Chunsheng Guo Jingru Li Daming Sun Hongqing Cui Anzhi |
| |
| Abstract: | A radiochemical procedure for separation of 79 Se from fission products with the main steps of nitrobenzene extraction and sulfur dioxide precipitation is presented.The procedure gives a chemical yield of selenium greater than 60% and has a satisfactory decontamination ability from all of the relating radioactive nuclides.The mearurement conditions of 79 Se radioactivity using liquid scintillation technique are studied.The 79 Se samples obtained from the procedure have been used successfully for 79 Se half life determination. |
| |
| Keywords: | Se Radiochemical separation Fission products Extraction Precipitation |
| 本文献已被 CNKI 维普 等数据库收录！ |
