Desorption by displacement

{
  "id": "MLC-T-CHM-003067",
  "term": "Desorption by displacement",
  "field": "Chemistry",
  "definition": "The removal of an adsorbed substance from a surface by the competitive adsorption of a second substance from the surrounding fluid phase. The displacing substance has a higher affinity for the surface's active sites, causing the originally adsorbed species to detach and enter the bulk phase. This mechanism is the basis for displacement chromatography, where a strongly adsorbing compound is used to elute and separate components of a mixture from a stationary phase.",
  "subject": "Physical and Biophysical Chemistry",
  "see_also": [
    "adsorption",
    "interfacial layer"
  ],
  "references": [
    "PAC, 1972, 31, 577. 'Manual of Symbols and Terminology for Physicochemical Quantities and Units, Appendix II: Definitions, Terminology and Symbols in Colloid and Surface Chemistry' on page 585 (https://doi.org/10.1351/pac197231040577)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/desorption-by-displacement/"
}