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Digitale Medien

Theory of fast capillary gas chromatography. Part 1: Column efficiency (1997)

Blumberg, Leonid M.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 20 (1997), S. 597-604

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Details

ISSN: 0935-6304

Schlagwort(e): Average velocity ; Fast GC ; High pressure drop ; Plate height ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: Typically, fast GC requires high column pressure drop. Under that condition, known relations do not provide a complete description of dependence of [apparent] plate height, ĥ, on average velocity, u, of carrier gas.A complete descriptions for ĥ vs. u is derived and analyzed. It is shown that, under the high pressure drop, ĥ = B/u2 + C1 u2 + C2 u. This is substantially different from the Van Deemter equation ĥ = B/u + Cu for the low pressure drop. Analytical expressions for the minimum plate height and for the respective optimum u under the high pressure drop are derived and analyzed.

Zusätzliches Material: 7 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240201106

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