Reference number
ISO 20045:2023
International Standard
ISO 20045:2023
Measurement of the radioactivity in the environment — Air: tritium — Test method using bubbler sampling
Edition 1
2023-05
Read sample
ISO 20045:2023
73961
Published (Edition 1, 2023)

ISO 20045:2023

ISO 20045:2023
73961
Language
Format
CHF 151
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Abstract

This document describes a test method to determine the activity concentration of atmospheric tritium by trapping tritium in air by bubbling through a water solution. Atmospheric tritium activity concentration levels are expressed in becquerel per cubic metre (Bq∙m-3).

The formulae are given for a sampling system with four bubblers. They can also be applied to trapping systems with only one trapping module consisting of two bubblers if only tritiated water vapour (HTO) is in the atmosphere to be sampled.

This document does not cover laboratory test sample results, in becquerel per litre of trapping solution, according to ISO 9698 or ISO 13168.

The test method detection limit result is between 0,2 Bq∙m-3 and 0,5 Bq∙m-3 when the sampling duration is about one week.

General information

  •  : Published
     : 2023-05
     : 2023-09
     : 2023-09
    : International Standard published [60.60]
  •  : 1
     : 35
  • ISO/TC 85/SC 2
    17.240  13.040.01 
  • RSS updates

Sustainable Development Goals

This standard contributes to the following Sustainable Development Goal

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