ISO 9698
Water quality — Tritium — Test method using liquid scintillation counting
Organization: | ISO |
Publication Date: | 1 May 2019 |
Status: | active |
Page Count: | 32 |
ICS Code (Examination of physical properties of water): | 13.060.60 |
ICS Code (Radiation protection): | 13.280 |
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.