Fixed ions

{
  "id": "MLC-T-CHM-004458",
  "term": "Fixed ions",
  "field": "Chemistry",
  "definition": "Ions that are covalently bonded to or permanently immobilized within the stationary phase of an ion exchanger. These ions possess a charge opposite to that of the mobile counter-ions, facilitating the exchange process. The charge and density of fixed ions determine the ion exchange capacity of the material.",
  "subject": "Analytical Chemistry",
  "see_also": [
    "counter-ions",
    "ion exchanger"
  ],
  "references": [
    "PAC, 1993, 65, 819. 'Nomenclature for chromatography (IUPAC Recommendations 1993)' on page 854 (https://doi.org/10.1351/pac199365040819)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/fixed-ions/"
}