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.

Begin

2025-11-06

WI

00230478

Planned document number

DIN EN ISO 13169

Project number

11905149

Responsible national committee

NA 119-09-08 AA - Radioactivity measurements in waters  

Responsible european committee

CEN/TC 230 - Water analysis  

Responsible international committee

ISO/TC 147/SC 3/WG 15 - Liquid scintillation counting and proportional counting