Absolute counting

{
  "id": "MLC-T-CHM-000050",
  "term": "Absolute counting",
  "field": "Chemistry",
  "definition": "A method of radioactivity measurement that determines the disintegration rate of a radioactive source without reference to a known standard. This technique involves accounting for all factors that affect the detection efficiency, such as detector geometry and self-absorption. It yields the true activity of the sample in becquerels (Bq).",
  "subject": "Analytical Chemistry",
  "see_also": [
    "activity",
    "counting rate"
  ],
  "references": [
    "PAC, 1994, 66, 2513. 'Nomenclature for radioanalytical chemistry (IUPAC Recommendations 1994)' on page 2517 (https://doi.org/10.1351/pac199466122513)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/absolute-counting/"
}