✦ LIBER ✦

The contribution of eddy diffusion and of the macroscopic mobile phase velocity profile to plate height in chromatography : A literature investigation

✍ Scribed by C.L. De Ligny

Publisher: Elsevier Science
Year: 1970
Tongue: English
Weight: 697 KB
Volume: 49
Category: Article
ISSN: 1873-3778
DOI: 10.1016/s0021-9673(00)93651-3

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✦ Synopsis

From literature data, the coefficient for radial convective dispersion jln and the composite coefficient (K' + K$) for longitudinal dispersion by eddy diffusion and the macroscopic velocity profile are estimated as a function of the ratio ,g of the diameters of the column and of the granules of the packing.

It does not appear to be possible to separate the effects of eddy diffusion and of the macroscopic velocity profile, on tile basis of the experimental data available. AND l? W. 13x~~LrmwzR,

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Peak broadening in paper chromatography and related techniques : VII. The contribution of the macroscopic mobile phase velocity profile to peak broadening in paper and thin-layer chromatography

✍ C.L. De Ligny; W. Van De Meent 📂 Article 📅 1970 🏛 Elsevier Science 🌐 English ⚖ 547 KB

The contribution of the macroscopic mobile phase velocity profile in a paper or thin-layer strip to longitudinal dispersion in chromatography was investigated. For this purpose the dependence of the plate height on the breadth of the paper or thinlayer strip, scanned by the densitometer, was determi