What is Adsorbent in Chromatography?

Definition of adsorbent in chromatography:

An adsorbent in chromatography is the solid stationary phase that retains analytes on its surface during separation. Adsorbents retain analytes through surface interactions such as van der Waals forces, hydrogen bonding, or dipole interactions. In adsorption chromatography, analytes temporarily adhere to the surface of the stationary phase before being carried forward by the mobile phase. Common chromatographic adsorbents like silica gel and alumina provide large surface areas that enable effective analyte retention.