化学学报 ›› 1965, Vol. 31 ›› Issue (3): 267-269. 上一篇    

研究简报

薄层色层在无机分析中的应用——Ⅲ.铌和钽及贵金属的分离

胡之德, 刘成立   

  1. 兰州大学化学系
  • 收稿日期:1964-08-17 出版日期:1965-06-15 发布日期:2013-06-03

APPLICATION OF THIN-LAYER CHROMATOGRAPHY IN INORGANIC ANALYSIS Ⅲ. SEPARATION OF NIOBIUM AND TANTALUM, AND NOBLE METALS

HU ZHI-TEI, LIU CHENG-LI   

  1. Department of Chemistry, Lanchow University
  • Received:1964-08-17 Online:1965-06-15 Published:2013-06-03

seiler曾作阳离子三、四组,碱金属,卤素,各种磷酸根,以及铜、钴、镍、铀和镓的分离及检定[1]。作者亦曾研究钛、锆、钍、钪、铌和铀的分离[2],吴孟炎曾作金、银、硒和碲的分离,均获良好效果。本文报告用反相两种方式研究铌和钽及贵金属的薄层层析行为。铌和钽及贵金属分离良好。铌和钽分离后经光谱检查铌中无钽,钽中无铌。此外,还比较铌、钽的薄层与纸层析。

The separation of niobium and tantalum and of noble metals by reversed-phase thinlayer chromatography has been studied.It is carried out on silica gel layers of 0.5 mm thickness supported by glass plates.Before chromatography,the silica gel layer as well as the paper strips are treated with 20 per cent tributyl phosphate benzene solution.Niobium can be separated from tantalum by reversed-phase paper chromatography and thin-layer chromatography both with ammonium thiocyanate: 10% oxalic acid:6 N hydrochloric acid(1.5:15:15; W/V/V) as the mobile phase.The Rf value for niobium and tantalum is 0.84 and 0.13 respectively with the former technique,and 0.82 and 0.02,by the latter.Rhodium-ruthenium-palladium-gold mixtures can be separated from one another also by reversed-phase thin-layer chromatography with 2 N hydrochloric acid as eluent.The Rf value for the metals mentioned is 0.95-1.0,0.18-0.43,0.70-0.84,and 0.00 respectively.