Abstract Preview

ISO 13165-3:2016 specifies the determination of radium-226 (226Ra) activity concentration in all types of water by coprecipitation followed by gamma-spectrometry (see ISO 18589‑3).

The method described is suitable for determination of soluble 226Ra activity concentrations greater than 0,02 Bq l−1 using a sample volume of 1 l to 100 l of any water type.

For water samples smaller than a volume of 1 l, direct gamma-spectrometry can be performed following ISO 10703 with a higher detection limit.

NOTE This test method also allows other isotopes of radium, 223Ra, 224Ra, and 228Ra, to be determined.


General information

  • Status :  Published
    Publication date : 2016-03
  • Edition : 1
    Number of pages : 14
  • :
    ISO/TC 147/SC 3
    Radioactivity measurements
  • 17.240
    Radiation measurements
    13.060.60
    Examination of physical properties of water

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