化学学报 ›› 1965, Vol. 31 ›› Issue (2): 182-185. 上一篇    下一篇

论文

希土元素的反相纸层析TBP-HNO3-NH4CNS体系

章竹君, 杨秀霞   

  1. 西北大学化学系
  • 收稿日期:1964-08-13 出版日期:1965-02-15 发布日期:2013-06-03

SEPARATION OF RARE EARTH ELEMENTS BY REVERSEDPHASE PAPER CHROMATOGRAPHY THE TBP-HNO3-NH4CNS SYSTEM

ZHANG ZHU-JUN, YANG SIU-HSIA   

  1. Department of Chemistry, Northwestern University
  • Received:1964-08-13 Online:1965-02-15 Published:2013-06-03

在纸层析方面,Weidmann等和Kertes等曾分别系统研究用磷酸三丁酯(TBP)-盐酸,TBP-硝酸体系作纸层析分离.Siekierski等曾以TBP作为固定相,硝酸作为流动相,在硅藻土柱进行希土元素的反相层析,效果颇好.本文作者考虑到硫氰酸铵能与各希土离子形成具不同稳定性的络合物,可以改变它们在TBP和水相间的分配系数,因而选择TBP-HNO3-NH4CNS体系进行希土元素的反相纸层析.

This paper reports the reversed-phase paper chromatographic separations of rare earth elements,uranium,and thorium.The tributyl phosphate(TBP) saturated with equal volume of eluting solvent was used as the stationary phase.Ammonium thiocyanate in nitric acid solution was used as the eluting solvent.The Rr values of rare earth elements,uranium(Ⅵ) and thorium decrease with increasing concentration of ammonium thiocyanate but increase with increasing concentration of nitric acid.The separations of certain rare earth elements,and of rare elements with uranium and thorium in this system have been achieved.When the eluting solvent was 0.1 N in nitric acid and 0.2 M in ammonium thiocvanate,best results of separation were obtained.