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  • BSI
    BS EN ISO 13165-3:2024 - TC Tracked Changes. Water quality. Radium-226 - Test method using coprecipitation and gamma-ray spectrometry
    Edition: 2024
    $543.31
    / user per year

Description of BS EN ISO 13165-3:2024 - TC 2024

This document specifies a method to determine radium-226 (226Ra) activity concentration in all types of water by coprecipitation followed by gamma-ray spectrometry (see ISO 20042[7]). The method covers the measurement of soluble 226Ra activity concentrations greater than 0,002 Bq·l?1 using a sample volume of up to 100 l of any water type. For water samples with a volume of less than a volume of 1 l, direct gamma-ray spectrometry can be performed following ISO 10703 but with a higher detection limit. The typical detection limit for samples of 1 l to 5 l is in the range of 0,002 to 0,000 40 Bq·l?1[8]. NOTE            This test method can be adapted to determine other naturally occurring isotopes of radium, such as 223Ra, 224Ra and 228Ra, if the respective ingrowth periods are taken into account.



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BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.

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