What is Rf value in chromatography?
In paper or thin-layer chromatography, the distance from the baseline of the migrated compound divided by the distance of migration of the solvent (mixture) is the Rf value. This value which is always less than 1 is characteristic of a particular compound within a defined system of chromatography.
What do high Rf values mean?
If the RF value is large, then that means the solute was attracted to the solvent (which was moving). This is because as the solvent moves up, the solute follows, since their polarities are similar.
What does it mean if the Rf value is 1?
An Rf value of 1 or too close to it means that the spot and the solvent front travel close together and is therefore unreliable. This happens when the eluting solvent is too polar for the sample.
What do you mean by Rf value in chemistry?
Related Questions More Answers Below. The Rf value is defined as the ratio of the distance moved by the solute (i.e. the dye or pigment under test) and the distance moved by the the solvent (known as the Solvent front) along the paper, where both distances are measured from the common Origin or Application Baseline,…
What does Rf value mean in custom search?
Custom Search. RF value is the degree of retention of a component retardation factor. RF value does not have units since the both lower and upper cases are in distance. Here the distance is measured up to the center of the spot.
Which is the correct definition of the RF factor?
Long Answer: Rf is the “Retardation Factor”, which is the ratio of the distance traveled by a compound in a mobile phase compared with the distance traveled by the front of the mobile phase itself.
What is the Rf value and its importance in chromatography?
The Rf value serves as a simple measurement of the relative binding of the compound of interest under the experimental conditions. Herein, what is an RF value? RF value (in chromatography) The distance travelled by a given component divided by the distance travelled by the solvent front.