peak resolution, $R s$

in chromatography

The separation of two peaks in terms of their average peak width at base ( $t R2 > t R1$ ):

$R s = t R2 − t R1 w b1 + w b2 2 = 2 ( t R2 − t R1 ) w b1 + w b2$

In the case of two adjacent peaks it may be assumed that $w b1 ≈ w b2$ , and thus, the width of the second peak may be substituted for the average value:

$R s ≈ t R2 − t R1 w b2$

Source:

PAC, 1993, 65, 819 (Nomenclature for chromatography (IUPAC Recommendations 1993)) on page 847

Orange Book, p. 108

Related index:

IUPAC > Gold Book > math/physics > quantities

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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.P04465.

Original PDF version: http://www.iupac.org/goldbook/P04465.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 The PDF version is out of date and is provided for reference purposes only.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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