Hivatkozási szám

MSZ EN ISO 13161:2021

Dokumentumazonosító

176503

Cím

Vízminőség. Polónium-210. Alfa-spektrometriás vizsgálati módszer (ISO 13161:2020)

Angol cím

Water quality. Polonium 210. Test method using alpha spectrometry (ISO 13161:2020)

Alkalmazási terület

This document specifies a method for the measurement of ^210ˇPo in all types of waters by alpha spectrometry. The method is applicable to test samples of supply/drinking water, rainwater, surface and ground water, marine water, as well as cooling water, industrial water, domestic, and industrial wastewater after proper sampling and handling, and test sample preparation. Filtration of the test sample may be required. The detection limit depends on the sample volume, the instrument used, the counting time, the background count rate, the detection efficiency and the chemical yield. The method described in this document, using currently available alpha spectrometry apparatus, has a detection limit of approximately 5 mBq l^-1ˇ, which is lower than the WHO criteria for safe consumption of drinking water (100 mBq l^-1ˇ). This value can be achieved with a counting time of 24 h for a sample volume of 500 ml. The method described in this document is also applicable in an emergency situation. The analysis of ^210ˇPo adsorbed to suspended matter in the sample is not covered by this method. If suspended material has to be removed or analysed, filtration using a 0,45 micrometer filter is recommended. The analysis of the insoluble fraction requires a mineralization step that is not covered by this document ^[13]ˇ. In this case, the measurement is made on the different phases obtained. The final activity is the sum of all the measured activity concentrations. It is the user’s responsibility to ensure the validity of this test method for the water samples tested.

ICS

13.060.60 Víz fizikai tulajdonságainak vizsgálata

17.240 Sugárzásmérések

Műszaki Bizottság

A szabvány nyelve

angol

Az érvényesség kezdete

2021-02-01

Forrás

idt EN ISO 13161:2020; idt ISO 13161:2020

Előd

MSZ EN ISO 13161:2016

Utód

Módosítás

Kiegészítő információk

SZK-közlemények

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