Chinese Journal of Applied Chemistry

• Full Papers • Previous Articles     Next Articles

Extraction of Samarium And Yttrium with 8-Hydroxyquinoline

WAGN Xianglan*, YIN Heng, WANG Shanshan   

  1. (Department of Chemistry and Environmental Engineering,Wuhan Bioengineering Institute,Wuhan 430415)
  • Received:2011-02-21 Revised:2011-04-09 Published:2012-01-10 Online:2012-01-10

Abstract:

The solvent extraction of samarium and yttrium using 8-hydroxyquinoline(HQ)-n-heptane in nitric acid medium was systematically investigated including the effects of various parameters, such as HQ-concentration, NO-3 concentration and pH value in equilibrated aqueous solution on the distribution ratio of rare earth. The distribution ratio increased with the increase of HQ concentration and pH value and decreased with the increase of NO-3 concentration. The formed complex was believed to be M(NO3)Q(HQ)(OH) based on the results from slop method and charge balance. The complex extraction mechanism of samarium and yttrium by HQ in nitric acid was confirmed.

Key words: hydroxyquinoline, samarium, yttrium, Extraction, extraction constant

CLC Number: