International Organization for Standardization

Water quality - Radon-222 - Part 4: Test method using two-phase liquid scintillation counting - First Edition
 N 13164-4

Annotation

This part of ISO 13164 describes a test method for the determination of radon-222 (222Rn) 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.

Автоматический перевод:

Качество воды - Радон 222 - Часть 4: Метод испытаний с помощью двухфазового жидкого счета сцинтилляций - Первый Выпуск

Эта часть ISO 13164 описывает метод испытаний для определения радона 222 (222Rn) концентрация деятельности в несолончаковых водах извлечением и жидким счетом сцинтилляций.