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Author Takata, Takeshi ♦ Hirayama, Naoki
Source J-STAGE
Content type Text
Publisher The Japan Society for Analytical Chemistry
Language English
Abstract A novel cyclohexane/water/ionic-liquid (1-butyl-3-methylimidazolium hexafluorophosphate, $[bmim][PF_{6}])$ triphasic extraction system was studied for a possible fractional extraction of divalent metal cations with co-using 8-quinolinol (HQ) and tri-n-octylphosphine oxide (TOPO) as competitive extractants. In this system, $Ni^{2+}$ was extracted into the $[bmim][PF_{6}]$ phase as a $Q^{−}-complex,$ whereas each of $Mn^{2+},$ $Zn^{2+},$ $Cd^{2+}$ and $Pb^{2+}$ was extracted into the cyclohexane phase as an ion-pair of a cationic TOPO-complex and $PF_{6}^{−}.$ A suitable selection of extractants and ionic liquid can result in developing a powerful triphasic fractional extraction system.
ISSN 09106340
Learning Resource Type Article
Publisher Date 2009-11-10
e-ISSN 13482246
Journal Analytical Sciences(analsci)
Volume Number 25
Issue Number 11
Page Count 2
Starting Page 1269
Ending Page 1270


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