BS EN ISO 11704:2018 Water quality. Gross alpha and gross beta activity. Test method using liquid scintillation counting
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BS EN ISO 11704:2018

Water quality. Gross alpha and gross beta activity. Test method using liquid scintillation counting

Status : Current   Published : December 2018



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 using liquid scintillation counting (LSC).

The method is applicable to all types of waters with a dry residue of less than 5 g/l and when no correction for colour quenching is necessary.

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 beta index. Gross alpha and beta analysis is not expected to be as accurate nor as precise as specific radionuclide analysis after radiochemical separations.

The method covers non-volatile radionuclides below 80 °C, 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, rain water, surface and ground water as well as cooling water, industrial water, domestic and industrial waste water after proper sampling 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 4 h by directly measuring water test samples without any treatment.

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

Standard NumberBS EN ISO 11704:2018
TitleWater quality. Gross alpha and gross beta activity. Test method using liquid scintillation counting
Publication Date18 December 2018
Normative References(Required to achieve compliance to this standard)ISO 5667-3, ISO 3696, ISO 5667-1, ISO/IEC 17025, ISO 80000-10
Informative References(Provided for Information)ISO 5667-20, ASTM D7283-17, ISO 11929, IAEA GSG-2, ISO 9696, ISO 5667-6:2014, ISO 5667-11:2009, ISO 5667-8:1993 (R04), ISO 5667-14:2014, ISO 5667-7:1993 (R04), ISO 5667-4:2016, ISO 5667-10:1992 (R04), ISO 5667-5:2006
ReplacesBS EN ISO 11704:2015
International RelationshipsEN ISO 11704:2018,ISO 11704:2018
Draft Superseded By17/30349843 DC
DescriptorsBeta-particles, Alpha particles, Water testing, Potable water, Determination of content, Radionuclides, Radiation measurement, Quality, Water resources, Liquids, Radioactive materials, Water, Scintillation counters
Title in FrenchQualité de l'eau. Activités alpha globale et bêta globale. Méthode d'essai par comptage des scintillations en milieu liquide
Title in GermanWasserbeschaffenheit. Gesamt-Alpha- und Gesamt- Beta-Aktivität. Verfahren mit dem Flüssigszintillationszähler
ISBN978 0 580 96050 5
File Size741 KB

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