Rf
Definition
In planar chromatography, spot migration distance divided by solvent-front migration distance from a common origin.
Related terms
- Mobile Phase
- The phase that carries the analyte through the stationary phase. A solvent system in TLC and HPLC, an inert carrier gas (nitrogen,...
- Plate Number
- An efficiency measure estimated from retention and peak width under a stated convention.
- Resolution
- Smallest distance between two points that can still be seen as separate. Given by Abbe's d = 0.61 λ / NA. Light...
- Stationary Phase
- The fixed phase across which the sample moves. Silica gel on TLC/HPTLC plates, a packed or capillary column coating in GLC, a...
- Visualisation
- A detection step that makes separated zones observable, with its own selectivity and sensitivity.