Mutual Separation of Fe(II) and Fe(III) Using Cyclohexane/Water/ Ionic-liquid Triphasic Extraction System with 2,2′-Bipyridine and Tri-n-octylphosphine Oxide
Autor: | Naoki Hirayama, Kotaro Morita, Mizuki Toita |
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Rok vydání: | 2020 |
Předmět: |
Cyclohexane
010401 analytical chemistry Extraction (chemistry) Oxide 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences 2 2'-Bipyridine 0104 chemical sciences Analytical Chemistry chemistry.chemical_compound Bipyridine chemistry Phase (matter) Ionic liquid 0210 nano-technology Masking agent Nuclear chemistry |
Zdroj: | Analytical Sciences. 36:1387-1391 |
ISSN: | 1348-2246 0910-6340 |
Popis: | The triphasic extraction system with two extract phases can be used to separate two materials simultaneously into each phase. In this article, a possible mutual separation of Fe(II) and Fe(III) was studied using the cyclohexane/water/ionic liquid (IL) triphasic extraction system for Fe speciation. For Fe(II) and Fe(III) extraction, 2,2'-bipyridine (bpy) and tri-n-octylphosphine oxide (TOPO) were selected as extractants, respectively. It was suggested that [FeII(bpy)3]2+ and FeIII(TOPO)43+·3Tf2N- were extracted into the IL (1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide, C4mimTf2N) phase and the cyclohexane phase, respectively, and both of the extractants also acted as masking agents. On simultaneous separation using the triphasic system, Fe(II) and Fe(III) were quantitatively extracted into the IL phase and the cyclohexane phase, respectively, and their mutual separation was achieved. |
Databáze: | OpenAIRE |
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