DIN Standards Committee Water Practice
Water quality - Uranium - Test method using alpha liquid scintillation counting (ISO/DIS 13169:2025)
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
2025-09-10
WI
00230478
Planned document number
prEN ISO 13169
Responsible national committee
NA 119-09-08 AA - Radioactivity measurements in waters
