ISO 4722-1:2023

Published (Edition 1, 2023)

ISO 4722-1:2023

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Abstract

This document specifies the method and the conditions for the determination of ²³²Th activity concentration in samples of environmental water (including sea waters) and waste waters before release to the environment using alpha spectrometry and ²²⁹Th as a recovery tracer. A chemical separation allows to separate and purify thorium from a test portion of the sample.

The general principles outlined in this document can be applied for the analysis of other alpha-emitting thorium isotopes such as ²²⁸Th and ²³⁰Th in aqueous samples.

General information

Status
: Published

Publication date
: 2023-10

Stage
: International Standard published [60.60]
Edition
: 1

Number of pages
: 18
Technical Committee :
ISO/TC 147/SC 3

ICS :
17.240 13.060.60
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