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Different elution modes and field programming in gravitational field-flow fractionation IV. Field programming achieved with channels of non-constant cross-sections

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    SYSNO ASEP0162369
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JOstatní články
    TitleDifferent elution modes and field programming in gravitational field-flow fractionation IV. Field programming achieved with channels of non-constant cross-sections
    Author(s) Plocková, Jana (UIACH-O)
    Matulík, František (UIACH-O)
    Chmelík, Josef (UIACH-O)
    Source TitleJournal of Chromatography A. - : Elsevier - ISSN 0021-9673
    Roč. 955, č. 1 (2002), s. 95-103
    Number of pages9 s.
    Languageeng - English
    CountryNL - Netherlands
    Keywordsgravitational field-flow fractionation ; field programming ; hydrodynamic lift forces
    Subject RIVCB - Analytical Chemistry, Separation
    R&D ProjectsIAA4031805 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
    CEZAV0Z4031919 - UIACH-O
    AnnotationAlthough the Earth's gravitational field is constant and relatively weak, there are different ways to implement force field programming in GFFF. Because hydrodynamic lift forces participate in the separation process in focusing (hyperlayer) elution mode, they can control the resulting force field acting on particles via changes of flow-velocity. In this work, these changes are accomplished with channels of non-constant cross-sections. Three trapezoidal channels of decreasing breadth and two channels of decreasing height (along the longitudinal axis) are tested as tools for optimization of the separation of a model silica gel particle mixture.
    WorkplaceInstitute of Analytical Chemistry
    ContactIveta Drobníková, drobnikova@iach.cz, Tel.: 532 290 234
    Year of Publishing2003

Number of the records: 1  

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