relative retention, r

in column chromatography
https://doi.org/10.1351/goldbook.R05277
The ratio of the adjusted or net retention volume (time) or retention factor of a component relative to that of a standard, obtained under identical conditions: r=VRiVR(st)=VNiVN(st)=tRitR(st)=kikst Depending on the relative position of the peak corresponding to the standard compound in the
chromatogram
, the value of r may be smaller, larger or identical to unity.
Sources:
Orange Book, 2nd ed., p. 105 [Terms] [Book]
PAC, 1993, 65, 819. (Nomenclature for chromatography (IUPAC Recommendations 1993)) on page 843 [Terms] [Paper]