BS EN ISO 10704:2019 Water quality. Gross alpha and gross beta activity. Test method using thin source deposit

BS EN ISO 10704:2019

Water quality. Gross alpha and gross beta activity. Test method using thin source deposit

Status : Current   Published : April 2019

Format
PDF

Format
HARDCOPY



What is this standard about?

This document specifies a method for the determination of gross alpha and gross beta activity concentration for alpha- and beta-emitting radionuclides. Gross alpha and gross beta activity measurement is not intended to give an absolute determination of the activity concentration of all alpha and beta emitting radionuclides in a test sample, but is a screening analysis to ensure particular reference levels of specific alpha and beta emitters have not been exceeded. This type of determination is also known as gross alpha and gross beta index. Gross alpha and gross beta analysis is not expected to be as accurate nor as precise as specific radionuclide analysis after radiochemical separations.

Maximum beta energies of approximately 0,1 MeV or higher are well measured. It is possible that low energy beta emitters can not detected (e.g. 3H, 55Fe, 241Pu) or can only be partially detected (e.g. 14C, 35S, 63Ni, 210Pb, 228Ra).

The method covers non-volatile radionuclides, since some gaseous or volatile radionuclides (e.g. radon and radioiodine) can be lost during the source preparation.

The method is applicable to test samples of drinking water, rainwater, surface and ground water as well as cooling water, industrial water, domestic and industrial wastewater after proper sampling, sample handling, and test sample preparation (filtration when necessary and taking into account the amount of dissolved material in the water).

The method described in this document is applicable in the event of an emergency situation, because the results can be obtained in less than 1 h. Detection limits reached for gross alpha and gross beta are less than 10 Bq/l and 20 Bq/l respectively. The evaporation of 10 ml sample is carried out in 20 min followed by 10 min counting with window-proportional counters.

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




Standard NumberBS EN ISO 10704:2019
TitleWater quality. Gross alpha and gross beta activity. Test method using thin source deposit
StatusCurrent
Publication Date10 April 2019
Normative References(Required to achieve compliance to this standard)ISO 3696, ISO/IEC Guide 98-3, ISO 11929, ISO 5667-1, ISO 5667-3, ISO/IEC 17025, ISO 80000-10
Informative References(Provided for Information)ISO 5667-10, ISO 5667-20, ISO 5667-7, ISO 11704, ISO 5667-4, ISO 5667-8, ISO 5667-14, IAEA GSG-2, ISO 5667-6, ISO 5667-5, ISO 5667-11
ReplacesBS EN ISO 10704:2015
International RelationshipsEN ISO 10704:2019,ISO 10704:2019
Draft Superseded By17/30349825 DC
DescriptorsWater, Alpha particles, Beta-particles, Specimen preparation, Test equipment, Radiation measurement, Radioactive materials, Determination of content, Interferences (chemical), Water testing, Radionuclides, Quality
ICS13.060.60
13.280
Title in FrenchQualité de l'eau. Activités alpha globale et bêta globale. Méthode d'essai par dépôt d'une source fine
Title in GermanWasserbeschaffenheit. Bestimmung der Gesamt- Alpha- und der Gesamt-Beta-Aktivität in nicht- salzhaltigem Wasser. Dünnschichtverfahren
CommitteeEH/3/8
ISBN978 0 580 96044 4
PublisherBSI
FormatA4
DeliveryYes
Pages32
File Size1.166 MB
Price£182.00


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