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ISO 20044:2022

M00003941

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ISO 20044:2022 Measurement of radioactivity in the environment - Air: aerosol particles - Test method using sampling by filter media

standard by International Organization for Standardization, 11/30/2022

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Full Description

This document provides guidance for

— the sampling process of the aerosol particles in the air using filter media. This document takes into account the specific behaviour of aerosol particles in ambient air (Annex B).

— Two methods for sampling procedures with subsequent or simultaneous measurement:
— the determination of the activity concentration of radionuclides bound to aerosol particles inthe air knowing the activity deposited in the filter;
— the operating use of continuous air monitoring devices used for real time measurement.

The activity concentration is expressed in becquerel per cubic metre (Bqm-3).

This document describes the test method to determine activity concentrations of radionuclides bound to aerosol particles after air sampling passing through a filter media designed to trap aerosol particles. The method can be used for any type of environmental study or monitoring.

The test method is used in the context of a quality assurance management system (ISO/IEC 17025[2]).