Wiegner effect

{
  "id": "MLC-T-CHM-012697",
  "term": "Wiegner effect",
  "field": "Chemistry",
  "definition": "The phenomenon where the pH of a suspension of colloidal particles differs from the pH of the supernatant liquid after sedimentation. This effect arises from the adsorption of ions, particularly hydrogen ions, onto the surface of the colloidal particles. It is closely related to the suspension effect observed in soil science and electrochemistry.",
  "subject": "Analytical Chemistry",
  "see_also": [
    "suspension effect"
  ],
  "references": [
    "PAC, 1994, 66, 2527. 'Recommendations for nomenclature of ionselective electrodes (IUPAC Recommendations 1994)' on page 2533 (https://doi.org/10.1351/pac199466122527)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/wiegner-effect/"
}