Desorption vs. Sorption



The process in which atomic or molecular species leave the surface of a solid and escape into the surroundings; the reverse of absorption or adsorption.


(sciences) Either of the processes of absorption and adsorption.


changing from an adsorbed state on a surface to a gaseous or liquid state


the process in which one substance takes up or holds another (by either absorption or adsorption)


the release of an adsorbed substance from a surface

‘cholesterol desorption from cell membranes’;


absorption and adsorption considered as a single process.



Desorption is a phenomenon whereby a substance is released from or through a surface. The process is the opposite of sorption (that is, either adsorption or absorption).


Sorption is a physical and chemical process by which one substance becomes attached to another. Specific cases of sorption are treated in the following articles: Absorption – (e.g., liquids being absorbed by a solid or gases being absorbed by a liquid); Adsorption – the physical adherence or bonding of ions and molecules onto the surface of another phase (e.g., reagents adsorbed to a solid catalyst surface); Ion exchange – an exchange of ions between two electrolytes or between an electrolyte solution and a complex.The reverse of sorption is desorption.

‘the incorporation of a substance in one state into another of a different state’;

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