DIN ISO 11665-4-2021 环境中放射性的测量. 空气: 镭-222. 第4部分: 使用被动采样和延迟分析确定平均活性浓度的综合测量方法(ISO 11665-4-2020)
Measurement of radioactivity in the environment - Air: radon-222 - Part 4: Integrated measurement method for determining average activity concentration using passive sampling and delayed analysis (ISO 11665-4:2020)
This International Standard outlines guidance for measuring radon-222 activity concentration and the potential alpha energy concentration of its short-lived decay products in the air. Part 4 of series ISO 11665 gives indications for measuring the average activity concentration of