Separation of Metal Complexes with Counter Ions by Tube Radial Distribution Chromatography Using a Ternary Solvent Containing 8-quinolinol

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  • KAWAI Yuji
    Department of Chemical Engineering and Materials Science, Faculty of Science and Engineering, Doshisha University
  • FUJINAGA Satoshi
    Department of Chemical Engineering and Materials Science, Faculty of Science and Engineering, Doshisha University
  • HASHIMOTO Masahiko
    Department of Chemical Engineering and Materials Science, Faculty of Science and Engineering, Doshisha University
  • TSUKAGOSHI Kazuhiko
    Department of Chemical Engineering and Materials Science, Faculty of Science and Engineering, Doshisha University Tube Radial Distribution Phenomenon Research Center, Doshisha University

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An open-tubular capillary chromatography system (tube radial distribution chromatography, TRDC) was developed using a ternary solvent (water-acetonitrile-ethyl acetate; volume ratio, 3:8:4) containing 10 mmol L−1 8-quinolinol for the separation of nitrate, chloride, and sulfate compounds of Ni(II), Al(III), and Fe(III). When a mixed solution of the Ni(II) compounds was injected into an untreated fused-silica capillary tube (90 cm × 75 μm i.d.) with a ternary solvent flow rate of 0.8 μL min−1, the compounds were eluted in the following order: [Ni(II)-(8-quinolinol)3] complex, [Ni(II)-(8-quinolinol)]-nitrate ion interaction complex, [Ni(II)-(8-quinolinol)]-chloride ion interaction complex, and [Ni(II)-(8-quinolinol)]-sulfate ion interaction complex. The elution of mixtures of the Al(III) and Fe(III) compounds showed similar trends.

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  • Analytical Sciences

    Analytical Sciences 31 (11), 1177-1182, 2015

    社団法人 日本分析化学会

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