摘要
研究了用18-冠-6(18C6)和苯并15-冠-5(B15C5)的硝基苯溶液分别从给定pH范围的苦味酸水溶液或KOH溶液中定量地萃取Rb和Re,同时研究了影响定量萃取的各种因素以及定量反萃的实验条件。用斜率法确定冠醚与金属离子在溶液中生成2:1配合物。冠醚的选择性定量溶剂萃取已较好地应用于中子活化分析岩石中微量Rb和Re。
The extraction behaviour of rubidium and rhenium with 18-crown6-(18C6)and benzo-15-crown-5(B15C5)in nitrobenzene from picric acid or potassium hydroxide solution are studied and methods for separation and determination are developed.The molar ratio of 18C6 to Rb and B15C5 to Re in the extracted species is probably 2:1.Rubidium and rhenium in rock samples are satisfactorily determined by neutron activation method.
出处
《核化学与放射化学》
CAS
CSCD
北大核心
1996年第1期21-26,共6页
Journal of Nuclear and Radiochemistry
基金
中国工程物理研究院科学基金
关键词
冠醚
萃取
中子活化分析
铷
铼
岩石
Crown ether Extraction Neutron activation analysis Rubidium Rhenium Rock