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ISO 9698:2019

Water quality — Tritium — Test method using liquid scintillation counting

Apr 30, 2019

General information

90.92     Nov 1, 2024

ISO

ISO/TC 147/SC 3

International Standard

13.060.60     13.280  

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Scope

This document specifies a method by liquid scintillation counting for the determination of tritium activity concentration in samples of marine waters, surface waters, ground waters, rain waters, drinking waters or of tritiated water ([3H]H2O) in effluents.
The method is not directly applicable to the analysis of organically bound tritium; its determination requires additional chemical processing of the sample (such as chemical oxidation or combustion).
With suitable technical conditions, the detection limit may be as low as 1 Bq·l−1. Tritium activity concentrations below 106 Bq·l−1 can be determined without any sample dilution.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 9698:2010

NOW

PUBLISHED
ISO 9698:2019
90.92 Standard to be revised
Nov 1, 2024

REVISED BY

IN_DEVELOPMENT
ISO/AWI 9698