Term: relative counting
https://doi.org/10.1351/goldbook.R05261

Definition:
A measurement in which the activity of a test portion is derived from the ratio between the count rates observed for the test portion and for a radioactive source of known activity.

Related Terms:
1) activity (<em>of a radioactive material</em>) (http://doi.org/10.1351/goldbook.A00114).
2) radioactive source (<em>of a radioactive material</em>) (http://doi.org/10.1351/goldbook.R05088).
3) test portion (<em>of a radioactive material</em>) (http://doi.org/10.1351/goldbook.T06284).
4) count (<em>of a radioactive material</em>) (http://doi.org/10.1351/goldbook.C01370).

Source: PAC, 1994, 66, 2513. 'Nomenclature for radioanalytical chemistry (IUPAC Recommendations 1994)' on page 2525 (https://doi.org/10.1351/pac199466122513)

Citation: 'relative counting' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.R05261

License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) for individual terms.

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