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研究了在硝酸介质中二环已基１８冠６－辛醇－［２］对锶的萃取。结果表明，这种萃取体系对锶具有良好的萃取性能。同时还研究了水相硝酸浓度、平衡时间及锶浓度对萃取的影响。该萃取体系具有较快的反应动力学，锶浓度对萃取没有很大的影响。体系具有良好的反萃性能，可用去离子水作为反萃剂。从模拟高放废液中对锶和其它主要阳离子的萃取分离表明，该体系不仅对锶具有很好的萃取性能，而且对其它阳离子也具有很好的分离性能。
The extraction of strontium from dicyclohexyl 18 crown-6-octanol- [2] in nitric acid medium was studied. The results show that this extraction system has good strontium extraction performance. The effects of nitric acid concentration, equilibrium time and strontium concentration on the extraction were also studied. The extraction system has a faster reaction kinetics, strontium concentration has no significant effect on the extraction. The system has good stripping performance, deionized water can be used as stripping agent. The extraction and separation of strontium and other major cations from simulated high-level liquid waste show that the system not only has good extraction performance for strontium, but also has good separation performance for other cations.