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http://dx.doi.org/10.5806/AST.2007.20.3.246

Separation and analysis of Cr(III) and Cr(VI) using 8-hydroxyquinoline complexation of Cr(III)  

Lim, Heon-Sung (Korea Research Institute of Chemical Technology)
Lee, Sueg-Geun (Korea Research Institute of Chemical Technology)
Publication Information
Analytical Science and Technology / v.20, no.3, 2007 , pp. 246-250 More about this Journal
Abstract
The quantitative determination of chromium(VI) by separation from chromium(III) complex of 8-hydroxyquinoline using solvent extraction has been studied. The reaction conditions for chromium(III) complex of 8-hydroxyquinoline and the solvent extraction of complex were investigated in detail. The chromium(III) complex was extracted with organic solvent (n-hexane) and residual chromium(VI) was determined by ICP-AES in aqueous layer. This technique is quantitative in the pH range of 8-9 and the limitations such as interfering ions were discussed.
Keywords
8-hydroxyquinoline; chromium(III); Chromium(VI);
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