Please read our student and staff community guidance on COVID-19
Skip to main content Skip to navigation

Isotope Data for Common Radionuclides

The data provided for each radionuclide is useful for assessing the level of risk associated with work with the radionuclide and should be used as an aid when carrying out risk assessment. Information is provided for:

  • The dominant type of radiation emitted for each radionuclide
  • The quantity (Becquerels) of radionuclide which will give a defined exposure rate (mSv.hr-1) for typical handling situations
  • Annual limits on intake values for inhalation, ingestion and skin exposure.
  • The quantities (Becquerels) of radionuclide which would lead to the area being designated as "Supervised" or as "Controlled".


  Name Last Editor Last Updated Keywords
Web page Calcium 45 Claire Beament 12/10/11
Web page Carbon 14 Claire Beament 12/10/11
Web page Chromium 51 Claire Beament 12/10/11
Web page Cobalt 57 Claire Beament 12/10/11
Web page Iodine 125 Claire Beament 12/10/11
Web page Iron 55 Claire Beament 12/10/11
Web page Manganese 54 Claire Beament 12/10/11
Web page Phosphorus 32 Claire Beament 12/10/11
Web page Phosphorus 33 Claire Beament 12/10/11
Web page Sodium 22 Claire Beament 12/10/11
Web page Sodium 24 Claire Beament 12/10/11
Web page Sulphur 35 Claire Beament 12/10/11
Web page Technicium 99 Claire Beament 12/10/11
Web page Tritium Claire Beament 12/10/11