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Countercurrent chromatography: liquid-liquid partition chromatography without solid support.

Y Ito, R L Bowman

    Science (New York, N.Y.)
    |January 16, 1970
    PubMed
    Summary
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    This study introduces a novel liquid-liquid partition chromatography system using a helical coil. This efficient system achieves separation comparable to gas chromatography for dinitrophenyl amino acids.

    Area of Science:

    • Analytical Chemistry
    • Chromatography

    Background:

    • Liquid-liquid partition chromatography is a separation technique.
    • Developing efficient and high-performance chromatographic systems is crucial for analytical chemistry.

    Purpose of the Study:

    • To develop a novel liquid-liquid partition chromatographic system.
    • To evaluate the efficiency of this new system for solute separation.

    Main Methods:

    • A helical coil of narrow-bore tubing was utilized as the chromatographic column.
    • The system employed a two-phase liquid system where phase-interchange occurred within the coil.
    • Separation efficiency was assessed using dinitrophenyl amino acids as test analytes.

    Main Results:

    • The helical coil system facilitated a multistep partition process for solutes.

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  • The column efficiency achieved was found to be comparable to that of gas chromatography.
  • Successful separation of dinitrophenyl amino acids was demonstrated.

    • Conclusions:

    • The developed liquid-liquid partition chromatographic system offers high efficiency.
    • This helical coil system presents a viable alternative to traditional gas chromatography for specific applications.