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  • BSI
    BS EN ISO 22125-2:2019 Water quality. Technetium-99 - Test method using inductively coupled plasma mass spectrometry (ICP-MS)
    Edition: 2019
    $435.35
    / user per year

Description of BS EN ISO 22125-2:2019 2019

This document specifies a method for the measurement of 99Tc in all types of water by inductively coupled plasma mass spectrometry (ICP-MS).

The method is applicable to test samples of supply/drinking water, rainwater, surface and ground water, as well as cooling water, industrial water, domestic, and industrial wastewater after proper sampling and handling and test sample preparation. A filtration of the test sample is necessary.

The detection limit depends on the sample volume and the instrument used. The method described in this document, using currently available ICP-MS, has a detection limit of approximately 0,2 ng·kg?1 to 0,5 ng·kg?1 (0,1 Bq·kg?1 to 0,3 Bq·kg?1), which is much lower than the WHO criteria for safe consumption of drinking water (100 Bq·l?1)[ 3]. The method presented in this document is not intended for the determination of ultra-trace amount of 99Tc.

The mass concentration values in this document are expressed by sample mass unit instead of sample volume unit as it is usually the case in similar standards. The reason is that 99Tc is measured in various matrix types such as fresh water or sea water, which have significant differences in density. The mass concentration values can be easily converted to sample volume unit by measuring the sample volume. However, it increases the uncertainty on the mass concentration result.

The method described in this document is applicable in the event of an emergency situation, but not if 99mTc is present at quantities that could cause interference.

The analysis of Tc adsorbed to suspended matter is not covered by this method.

It is the user’s responsibility to ensure the validity of this test method for the water samples tested.



Standard NumberBS EN ISO 22125-2:2019
TitleWater quality. Technetium-99 - Test method using inductively coupled plasma mass spectrometry (ICP-MS)
StatusRevision Underway
Publication Date2019-12-10
Identical National Standard OfEN ISO 22125-2, ISO 22125-2
DescriptorsQuality, Potable water, Test specimens, Preservation, Samples, Biological analysis and testing, Water treatment, Laboratory testing, Water, Water testing, Chemical analysis and testing, Containers
ICS17.240 Radiation measurements, 13.060.60 Examination of physical properties of water
CommitteeEH/3/8
ISBN978 0 580 99597 2
PublisherBSI
Pages32

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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