Tube Radial Distribution Phenomenon with a Two-phase Separation Solution of a Fluorocarbon and Hydrocarbon Organic Solvent Mixture in a Capillary Tube and Metal Compounds Separation

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  • KITAGUCHI Koichi
    Department of Chemical Engineering and Materials Science, Doshisha University
  • HANAMURA Naoya
    Department of Chemical Engineering and Materials Science, Doshisha University
  • MURATA Masaharu
    Department of Advanced Medical Initiatives, Kyushu University
  • HASHIMOTO Masahiko
    Department of Chemical Engineering and Materials Science, Doshisha University
  • TSUKAGOSHI Kazuhiko
    Department of Chemical Engineering and Materials Science, Doshisha University Tube Radial Distribution Phenomenon Recearch Center, Doshisha University

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Abstract

A fluorocarbon and hydrocarbon organic solvent mixture is known as a temperature-induced phase-separation solution. When a mixed solution of tetradecafluorohexane as a fluorocarbon organic solvent and hexane as a hydrocarbon organic solvent (e.g., 71:29 volume ratio) was delivered in a capillary tube that was controlled at 10°C, the tube radial distribution phenomenon (TRDP) of the solvents was clearly observed through fluorescence images of the dye, perylene, dissolved in the mixed solution. The homogeneous mixed solution (single phase) changed to a heterogeneous solution (two phases) with inner tetradecafluorohexane and outer hexane phases in the tube under laminar flow conditions, generating the dynamic liquid–liquid interface. We also tried to apply TRDP to a separation technique for metal compounds. A model analyte mixture, copper(II) and hematin, was separated through the capillary tube, and detected with a chemiluminescence detector in this order within 4 min.

Journal

  • Analytical Sciences

    Analytical Sciences 30 (6), 687-690, 2014

    The Japan Society for Analytical Chemistry

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