resolution in gas chromatography

A characteristic of the separation of two adjacent peaks. It may be expressed according to the equation:

$R AB = 2 | d R B − d R A | | w B + w A |$

where $R AB$ is the resolution, $d R A$ and $d R B$ are the retention distances (time or volume) of each eluted component A and B, and $w A$ and $w B$ are the respective widths of each peak at its base.

Source:

PAC, 1990, 62, 2167 (Glossary of atmospheric chemistry terms (Recommendations 1990)) on page 2211