ISO 11665-5-2020 环境中放射性的测量--空气: 氡-222--第5部分:活动浓度的连续测量方法 Measurement of radioactivity in the environment — Air: radon-222 — Part 5: Continuous measurement methods of the activity concentration

This document describes continuous measurement methods for radon-222. It gives indications for continuous measuring of the temporal variations of radon activity concentration in open or confined atmospheres.
This document is intended for assessing temporal changes in radon activity concentration in the environment, in public buildings, in homes and in work places, as a function of influence quantities such as ventilation and/or meteorological conditions.
The measurement method described is applicable to air samples with radon activity concentration greater than 5 Bq/m³.nd edition 2020-01 Measurement of radioactivity in the environment — Air: radon-222 — Part 5: Continuous measurement methods of the activity concentration Mesurage de la radioactivité dans l'environnement — Air: radon 222 — Partie 5: Méthodes de mesure en continu de l'activité volumique Reference number ISO 11665-5:2020(E) ？ ISO 2020 ISO 11665-5:2020(E) COPYRIGHT PROTECTED DOCUMENT ？ I