SIOC 中文
ACS
Adv search

Acta Chimica Sinica ›› 1965, Vol. 31 ›› Issue (3): 218-221. Previous Articles     Next Articles

12 杂多酸铵盐的离子交换性质——Ⅱ.碱金属离子在磷钨酸铵纸上的层析

章竹君1, 殷伯海1, 同振邦2, 沈石年2   

  1. 1. 西北大学化学系;
    2. 中国科学院西北化学研究所
  • 投稿日期:1964-06-29 发布日期:2013-06-03

ION EXCHANGE PROPERTIES OF AMMONIUM SALTS OF 12-HETEROPOLYACIDS Ⅱ. ION EXCHANGE CHROMATOGRAPHY OF THE ALKALI METAL IONS ON THE AMMONIUM TUNGSTOPHOSPHATE PAPER

ZHANG ZHU-JüN1, YING BO-HAI1, TONG ZHEN-BANG2, SHIH-NIEN2   

  1. 1. Department of Chemistry, Northwestern University;
    2. Northwestern Institute of Chemistry, Academia Sinica
  • Received:1964-06-29 Published:2013-06-03

PDF

661

Using an organic solvent together with ammonium nitrate solution and nitric acid as the mobile phase,it has been succeeded in separating the alkali metal ions from each other on the ammonium tungstophosphate papers by the ascending technique.The influences of the methanol,ethanol,n-propanol,iso-propanol,and acetone on the RF values have been investigated.Methanol was found to be the most suitable solvent.It took only three hours for the development when the temperature was kept at 20℃.For various ratios of methanol to water(1:1 to 5:1),complete separation was obtained when the concentration of ammonium nitrate and of nitric acid was kept at 0.4 M and 0.1 M respectively.The RF values were Li,0.70; Na,0.55;K,0.35;Rb,0.18; and Cs,0.03,when methanol to water was in the ratio of 4 to 1.