pressure gradient correction factor

in gas chromatography

A factor that corrects for the compressibility of the carrier gas. The values of the measured quantities obtained after multiplication by the factor $j$ are independent of the pressure drop in the column. If $p i$ , $p o$ are respectively the pressures of the carrier gas at the inlet and outlet of the column, then $j$ is given by:

$j = 3 [ ( p i p o ) 2 − 1 ] 2 [ ( p i p o ) 3 − 1 ]$

Source:

Orange Book, p. 101

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Cite as:
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8. https://doi.org/10.1351/goldbook.

Last update: 2014-02-24; version: 2.3.3.

DOI of this term: https://doi.org/10.1351/goldbook.P04821.

Original PDF version: http://www.iupac.org/goldbook/P04821.pdf. The PDF version is out of date and is provided for reference purposes only. For some entries, the PDF version may be unavailable.

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