Chromatography

Chromatography is a continuously evolving scientific discipline or field "studying the formation, change, movement, and separation of multiple concentration zones of chemical compounds (analytes or particles) of the studied sample in a flow of mobile phase relative to selective influence of one or a number of solid/liquid stationary phases or sorbents."

Chromatography has numerous methods associated with, dependent on the process-specific movement and type of mobile phase:

Methods of chromatography
Mobility or equilibria	Phase	Chromatography type
→	Liquid	Tswett, paper, thin-layer
→	Gas	Gas
→	Supercritical medium	Supercritical fluid
→	Electrical flow	Electro
↔	Sorbent liquid	Hypersorption, countercurrent, denuder
↓↑	Adsorption	Liquid-solid (gel), gas-solid, supercritical fluid-solid
↓↑	Chemisorption	Ion exchange, affinity, complex-forming
↓↑	Absorption (partition)	Liquid-liquid, gas-liquid
↓↑	Physical field	Field-flow fractionation
Equilibrium (isotherm)	Techniques, channel	Hyphenated mode
Linear	Zone, column	One-dimensional
Non-linear	Frontal, slot	Multidimensional
Non-linear	Displacement, flat bed	Combined with spectral methods

(Note: Arrows in the table indicate the movement of the analyte-containing mobile phase.)

See also

• Analyte
• Analytical chromatography
• Chromatogram
• Chromatograph
• Chromatography data management system (CDS)
• Fast protein liquid chromatography
• Gas chromatography
• Gel permeation chromatography
• High-performance liquid chromatography
• Ion chromatography
• Preparative high-performance liquid chromatography
• Supercritical fluid chromatography
• Ultra high-performance liquid chromatography