Abstract
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.
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General information
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Status: PublishedPublication date: 2016-03Stage: International Standard to be revised [90.92]
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Edition: 1Number of pages: 14
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Technical Committee :ISO/TC 147/SC 3
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Under developmentISO/FDIS 13165-3
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