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Gas chromatography in open rectangular channels with large aspect ratios

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Summary

Gas chromatographic experiments have been performed in a truly rectangular channel with a 60∶1 cross-sectional aspect ratio, constructed according to the field-flow fractionation technology. It is shown that the peak broadening is controlled by the thickness of the channel while the maximum load is determined by the largest cross-sectional dimension. However, even with its elongated configuration, the side walls contribute significantly to the band broadening of solutes with a high diffusivity. Good agreement is found between the experimental plate height data and the recent theoretical calculations of Golay [13] taking into account the side-wall effect.

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Authors and Affiliations

  1. Laboratoire de Chimie Analytique Physique, Ecole Polytechnique, F-91128, Palaiseau Cedex, France

    M. Martin, J. -L. Jurado-Baizaval & G. Guiochon

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  1. M. Martin
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  2. J. -L. Jurado-Baizaval
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  3. G. Guiochon
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Martin, M., Jurado-Baizaval, J.L. & Guiochon, G. Gas chromatography in open rectangular channels with large aspect ratios. Chromatographia 16, 98–102 (1982). https://doi.org/10.1007/BF02258877

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  • DOI: https://doi.org/10.1007/BF02258877

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