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.

Begin

2022-12-20

WI

00230413

Planned document number

DIN EN ISO 13165-3

Project number

11904860

Responsible national committee

NA 119-01-03-08 UA - Radioactivity measurements in waters  

Responsible european committee

CEN/TC 230 - Water analysis  

Responsible international committee

ISO/TC 147/SC 3/WG 13 - Gamma spectrometry  

draft standard

Water quality - Radium-226 - Part 3: Test method using coprecipitation and gamma-spectrometry (ISO/DIS 13165-3:2023); German and English version prEN ISO 13165-3:2023
2023-04
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previous edition(s)

Water quality - Radium-226 - Part 3: Test method using coprecipitation and gamma-spectrometry (ISO 13165-3:2016); German version EN ISO 13165-3:2020
2020-12

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