标准编号：ISO 11665-3:2020
中文名称：环境中辐射的测量 空气：氡-222 第3部分：其短寿命衰变产物α潜能浓度的点测量方法
英文名称：Measurement of radioactivity in the environment — Air: radon-222 — Part 3: Spot measurement method of the potential alpha energy concentration of its short-lived decay products
发布日期：2020-01
标准范围
This document describes spot measurement methods for determining the activity concentration
of short-lived radon-222 decay products in the air and for calculating the potential alpha energy
concentration.
This document gives indications for performing a spot measurement of the potential alpha energy
concentration, after sampling at a given place for several minutes, and the conditions of use for the
measuring devices.
The measurement method described is applicable for a rapid assessment of the potential alpha energy concentration. The result obtained cannot be extrapolated to an annual estimate potential alpha energy concentration of short-lived radon-222 decay products. Thus, this type of measurement is not applicable for the assessment of annual exposure or for determining whether or not to mitigate citizen exposures to radon or radon decay products.
This measurement method is applicable to air samples with potential alpha energy concentration
greater than 5 nJ/m3 .
NOTE This document does not address the potential contribution of radon-220 decay products.
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