高效离心分配色谱仪对异丙基膦酸单(1-己基-4-乙基)-辛酯-稀土萃取体系的研究  

Study of the Extraction of Heavy Lanthanides(Ⅲ) by 1-Hexyl -4-ethyloctyl Isopropylphosphonic Acid With High Performance Centrifugal Partition Chromatography

作　　者：陆军[1] 马根祥[1] 李德谦[1] 

机构地区：[1]中国科学院长春应用化学研究所,稀土化学与物理开放实验室,长春130022

出　　处：《分析化学》1997年第12期1446-1450,共5页Chinese Journal of Analytical Chemistry

基　　金：!国家攀登计划(稀土科学基础研究)资助

摘　　要：首次用高效离心分配色谱仪（ＨＰＣＰＣ）研究用异丙基膦酸单（１－己基－４－已基）辛酯（ＰＴ－２）分离三价重稀土元素，以分离 Ｙｂ（Ⅲ）， Ｅｒ（Ⅲ）及 Ｌｕ（Ⅲ）为例，考察了流动相酸度、流速、固定相浓度、ＨＰＣＰＣ的转速等因素对ＨＰＣＰＣ分离稀土效果的影响，并用ＨＰＣＰＣ法和液－液萃取法研究了ＰＴ－２萃取重稀土的机理。A high performance centrifugal partition chromatograph (HPCPC) was employed to study the extraction of Ln(Ⅲ) (ErCl3, YbCl3, LuCl3) by 1-hexyl-4-ethyloctyl isopropylphosphonic acid (PT-2). The influence of flow rate, acidity of mobile phase and rotational speed of HPCPC on separation efficiency was investigated. The extraction mechanism of heavy rare earth ions by PT-2 was studied by this method, and results were in good agreement with batch extraction.

关 键 词：离心分配色谱 稀土分离 铒 镱 镥 

分 类 号：O614.33[理学—无机化学] O657.74[理学—化学]