Abstract
This document specifies the measurement method for the determination of total activity concentration of uranium isotopes in non-saline waters by extraction and liquid scintillation counting.
This method covers the measurement of soluble uranium isotopes in water in activity concentrations between approximately 2·10−3 Bq/kg and 10 Bq/kg when analysing a 1 l test sample volume with a 60 000 s counting time with a typical alpha LSC instrument.
The ratio 234U/238U can also be determined. This method has not been tested for the measurement of other uranium isotopes.
General information
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Status: PublishedPublication date: 2018-07Stage: International Standard under systematic review [90.20]
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Edition: 1Number of pages: 14
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Technical Committee :ISO/TC 147/SC 3
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