Solvent Extraction of Copper(I) and (II) as Thiocyanate Complexes with Tetrabutylammonium Ions into Chloroform and with Trioctylphosphine Oxide into Hexane.

DOI PDF Web Site Web Site Web Site 2 Citations 19 References

Bibliographic Information

Other Title
  • Solvent Extraction of Copper I and II a

Search this article

Abstract

The solvent extraction of copper(II) in 1mol dm-3 Na(SCN, NO3), in which the thiocyanate concentration was 0.01 to 1mol dm-3, with tetrabutylammonium ions (tba+) into chloroform and with trioctylphosphine oxide (TOPO) into hexane was studied. Also, the solvent extraction of copper(I), which was formed by reducing copper(II) by ascorbic acid in these aqueous solutions, was studied. By a statistical analysis of the extraction data, it was concluded that copper(I) was extracted as tba+CuI(SCN)2- and CuISCN(TOPO)3, and copper(II) was extracted as (tba+)2CuII(SCN)42- and CuII(SCN)2(TOPO)3. Although copper(I) was extracted with both extractants better than copper(II) in the lower thiocyanate concentration range, copper(II) was extracted better in the higher thiocyanate concentration range. This was concluded to be due to better extraction of the extractable species of copper(I) than those of copper(II); however, copper(I) formed unextractable complexes much more than did copper(II) in the higher thiocyanate concentration range in the aqueous phase.

Journal

  • Analytical Sciences

    Analytical Sciences 13 (6), 903-911, 1997

    The Japan Society for Analytical Chemistry

Citations (2)*help

See more

References(19)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top