Standard NBN EN ISO 13164-4:2020

Water quality - Radon-222 - Part 4: Test method using two-phase liquid scintillation counting (ISO 13164-4:2015)
Status
:
Active
Publication date
:
3/2020
Languages
:
EN/FR/DE
ICS
:
13.060.60 Examination of physical properties of water 13.280 Radiation protection 17.240 Radiation measurements
Summary :
ISO 13164-4:2015 describes a test method for the determination of radon-222 (222R
n) activity concentration in non-saline waters by extraction and liquid scintillation counting. The radon-222 activity concentrations, which can be measured by this test method utilizing currently available instruments, are at least above 0,5 Bq l−1 for a 10 ml test sample and a measuring time of 1 h. This test method can be used successfully with drinking water samples and it is the responsibility of the laboratory to ensure the validity of this test method for water samples of untested matrices. Annex A gives indication on the necessary counting conditions to meet the required detection limits for drinking water monitoring.
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