BS EN ISO 22125-2:2019 - Water quality. Technetium-99. Test method using inductively coupled plasma mass spectrometry (ICP-MS)

BS EN ISO 22125-2:2019

Water quality. Technetium-99. Test method using inductively coupled plasma mass spectrometry (ICP-MS)

Status : Current   Published : December 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)
Publication Date10 December 2019
Normative References(Required to achieve compliance to this standard)ISO 20042, ISO 80000-10, ISO 5667-1, ISO 10703, ISO 5667-3, ISO/IEC 17025, ISO 5667-10, ISO/IEC Guide 99, ISO 11929 (all parts), ISO/IEC Guide 98-3, ISO 3696, ISO 17294-2
Informative References(Provided for Information)ISO 5667-4, ISO 5667-20, ISO 5667-7, ISO 5667-8, ISO 5667-9, ISO 5667-11, ISO 5667-6, ISO 5667-5, ISO 5667-14, IAEA GSG-2
International RelationshipsEN ISO 22125-2:2019,ISO 22125-2:2019
Draft Superseded By18/30371766 DC
DescriptorsQuality, Containers, Chemical analysis and testing, Preservation, Samples, Biological analysis and testing, Water, Test specimens, Laboratory testing, Potable water, Water treatment, Water testing
Title in FrenchQualité de l'eau. Technétium-99 Méthode d’essai par spectrométrie de masse couplée à un plasma induit
Title in GermanWasserbeschaffenheit. Technetium 99 Verfahrens mittels Massenspektronomie und induktiv gekoppeltem Plasma (ICP-MS)
ISBN978 0 580 99597 2
File Size1.615 MB

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