Desorption releases material previously retained at a boundary. At chemical equilibrium, adsorption and desorption can both continue while their mean rates balance.
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Desorption is the process by which a substance, typically a gas or liquid, is released from or is no longer adherent to a solid surface. It is the opposite of adsorption, where molecules adhere to a surface. Desorption can occur due to various factors, such as changes in temperature, pressure, or concentration. In environmental science, desorption is significant in understanding pollutant release from soils or sediments.