化学学报 ›› 1962, Vol. 28 ›› Issue (3): 148-154. 上一篇    下一篇

论文

鑭系元素、鈧与釷之纸层析分离

龐叔薇, 梁樹权   

  1. 中国科学院化学研究所
  • 修回日期:1961-11-01 发布日期:2013-06-03

ON THE SEPARATION OF LANTHANIDES, SCANDIUM AND THORIUM BY MEANS OF PAPER CHROMATOGRAPHY

PANG SHU-WEI, LIANG SHU-CHUAN   

  1. Institute of Chemistry, Academia Sinica
  • Revised:1961-11-01 Published:2013-06-03

本文报告乙酸甲酯作展开剂之改进和四氢呋喃作展开剂时镧系元素、钪、钍、锆、钛和钒的单独和共存时的比移值,以及后者与温度的关系。此外,尚确定用四氢呋喃层析分离和茜素检出时,钍与希士元素之极限比为10-3,及钪和希土元素之极限比为10-1

Two solvent mixtures, namely, tetrahydrosylvanc-nitric acid (sp.gr.1.42)-ovater (85:10:5 v/v) and methyl acetate-nitric acid (sp.gr.1.42)-water (85:5:10, v/v), were suggested by Burstail et al.[1] for the separation of lanthanidcs, scandium and thorium.With she latter mixture, the thorium formed a diffuse spot.It has been tried in this laboratory to remedy the said-drawback by varying the composition of the solvent systems.The Schleicher and Schurr 2045a paper was found to give better defined spots than the 2040a paper.The paper strips used were 1.5, 2.0 and 2.5 cm wide and 29 cm long.Throughout this work, the ascending technique was adopted.Saturated 90% alcoholic solution of alizarin was used to detect the elements studied.The composition of eluents (Nos.1 to 4).and the RF values of zirconium, lanthanides, scandium and thorium,when present singly or admixed, arc given in Table 1 (cf.Figure 1, chromatograms Nos.1-4).With eluent No.3 a well-defined thorium spot could be obtained.Increasing acidity of the eluting system does not affect the RF value of zirconium, but affects those of lanthanides and scandium slightly and increases that of thorium greatly.