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Flow-field-flow fractionation: a versatile new separation method

J C Giddings, F J Yang, M N Myers

    Science (New York, N.Y.)
    |September 24, 1976
    PubMed
    Summary
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    Flow-field-fractionation is a novel separation technique with wide applications. Experiments confirm retention is determined solely by diffusion coefficients for various solutes.

    Area of Science:

    • Biochemistry
    • Physical Chemistry
    • Separation Science

    Background:

    • Developing advanced separation techniques is crucial for analyzing complex biological and chemical mixtures.
    • Traditional methods may have limitations in resolving certain types of molecules based on their physical properties.

    Purpose of the Study:

    • To introduce and explain the principles of flow-field-fractionation (FFF) as a new separation technique.
    • To demonstrate the broad applicability and theoretical scope of FFF.
    • To experimentally validate the key parameters governing retention in FFF.

    Main Methods:

    • Theoretical principles of flow-field-fractionation were elucidated.
    • Experimental validation was performed using polystyrene beads, viruses, and proteins as model solutes.

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  • Solute retention was measured under varying flow and membrane conditions.

    • Main Results:

    • Flow-field-fractionation (FFF) demonstrated broad applicability across different solute types.
    • Experimental results confirmed that solute retention is exclusively dependent on diffusion coefficients.
    • The technique's theoretical scope encompasses any solute-solvent-membrane system.

    Conclusions:

    • Flow-field-fractionation is a versatile and promising new separation technology.
    • The predictable nature of retention based on diffusion coefficients simplifies method development.
    • FFF holds potential for diverse applications in chemistry and biology.