sorptionSorption is a physical and chemical process by which one substance becomes attached to another.

The picture shows Gas–liquid absorption (a) and liquid–solid adsorption (b) mechanism. Blue spheres are solute molecules.

Specific cases of sorption are treated in the following articles:

–  Absorption – “the incorporation of a substance in one state into another of a different state” (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.



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