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  • BSI
    BS EN ISO 19361:2020 Measurement of radioactivity. Determination of beta emitters activities. Test method using liquid scintillation counting
    Edition: 2020
    $435.35
    / user per year

Description of BS EN ISO 19361:2020 2020

This document applies to liquid scintillation counters and requires the preparation of a scintillation source obtained by mixing the test sample and a scintillation cocktail. The test sample can be liquid (aqueous or organic), or solid (particles or filter or planchet).

This document describes the conditions for measuring the activity of beta emitter radionuclides by liquid scintillation counting[14][15].

The choice of the test method using liquid scintillation counting involves the consideration of the potential presence of other beta emitter radionuclides in the test sample. In this case, a specific sample treatment by separation or extraction is implemented to isolate the radionuclide of interest in order to avoid any interference with other beta-, alpha- and gamma-emitting radionuclides during the counting phase.

This document is applicable to all types of liquid samples having an activity concentration ranging from a few Bq·l−1 to 106 Bq·l−1. For a liquid test sample, it is possible to dilute liquid test samples in order to obtain a solution having an activity compatible with the measuring instrument. For solid samples, the activity of the prepared scintillation source shall be compatible with the measuring instrument.

The measurement range is related to the test method used: nature of test portion, preparation of the scintillator - test portion mixture, measuring assembly as well as to the presence of the co-existing activities due to interfering radionuclides.

Test portion preparations (such as distillation for3H measurement, or benzene synthesis for 14C measurement, etc.) are outside the scope of this document and are described in specific test methods using liquid scintillation[2][3][4][5][6][7][8][9].



Standard NumberBS EN ISO 19361:2020
TitleMeasurement of radioactivity. Determination of beta emitters activities. Test method using liquid scintillation counting
StatusDefinitive
Publication Date2020-03-03
Identical National Standard OfISO 19361:2017, EN ISO 19361:2020
CorrectsBS ISO 19361:2017
DescriptorsWater testing, Scintillation counters, Quality, Tritium, Water pollution, Measurement, Liquids, Test methods, Determination of content, Water, Carbon
ICS17.240 Radiation measurements
CommitteeNCE/2
ISBN978 0 539 05832 1
PublisherBSI
Pages30

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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