CHEM380 page
By state of phases and mechanism
| mobile phase | stationary phase | acronym | mechanism |
|---|---|---|---|
| gas | solid | GSC | adsorption chromatography |
| liquid | GC(GLC) | partition chromatography | |
| liquid | solid | LSC | adsorption chromatography |
| liquid | LC(LLC) | partition chromatography | |
| liquid | CE | electromigration | |
By the polarity of phases
| stationary phase | mobile phase | ||
|---|---|---|---|
| normal phase chromatography | more polar | less polar | LC |
| reverse phase chromatography | less polar | more polar | LC |
By geometry of the separation region
| Planar chromatography | 2-dimensional |
| Column chromatography | 1-dimensional (tubular) |
By experimental parameter variation over separation period
| Isothermal | column temperature held constant | GC |
| Temperature programmed | column temperature changed systematically | GC |
| Isocratic | solvent (mobile phase) composition held constant | LC |
| Solvent programmed | solvent (mobile phase) composition changed systematically | LC |
By column dimension:
| Packed Column | Capillary Column (Open tubular) | |
| ~mm i.d.; 0.5 - 3m length; solid inert support 'holds' stationary phase and fills the column | 100-700 um i.d.; 10 - 60m length; open tubing, tubing wall 'holds' the stationary phase | |
| SCOT | support coated open tubular | |
| Megabore Column | PLOT | porous layer open tubular |
| wider capillary columns | WCOT | wall coated open tubular |
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