PARTITION chromatography on paper 1 has not hitherto been reported for the analysis of riboflavine, its nucleotides and derivatives. However, ‘Collidine', and a butyl alcohol-acetic acid mixture ...

This is when the molecules are on the chromatography paper, which is a solid.And the mobile phase, when the molecules can move. This is when the molecules are in the solvent, in this case water ...

A pencil line is drawn, and spots of ink or plant dye are placed on it. There is a container of solvent, such as water or ethanol. A pure substance will only produce one spot on the chromatogram ...