gradient elution

in chromatography
https://doi.org/10.1351/goldbook.G02670
A procedure in which the composition of the @M03952@ is changed continuously or stepwise during the @E02042@ process.
Sources:
Orange Book, 2nd ed., p. 93 [Terms]
PAC, 1993, 65, 819. (Nomenclature for chromatography (IUPAC Recommendations 1993)) on page 826 [Terms] [Paper]