Acta Chimica Sinica ›› 1965, Vol. 31 ›› Issue (3): 267-269. Previous Articles    

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

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.