two-dimensional chromatography

https://doi.org/10.1351/goldbook.T06540
A procedure in which parts or all of the separated sample components are subjected to additional separation steps. This can be done e.g. by conducting a particular fraction eluting from the column into another column (system) having different separation characteristics. When combined with additional steps, this may be described as multi-dimensional
chromatography
. In
planar chromatography
two-dimensional
chromatography
refers to the chromatographic process in which the components are caused to migrate first in one direction and subsequently in a direction at right angles to the first one; the two elutions are carried out with different eluents.
Source:
PAC, 1993, 65, 819. (Nomenclature for chromatography (IUPAC Recommendations 1993)) on page 827 [Terms] [Paper]