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  • BSI
    BS EN ISO 18589-5:2021 Measurement of radioactivity in the environment. Soil - Strontium 90. Test method using proportional counting or liquid scintillation counting
    Edition: 2021
    $418.55
    / user per year

Description of BS EN ISO 18589-5:2021 2021

This document describes the principles for the measurement of the activity of90Sr in equilibrium with90Y and89Sr, pure beta emitting radionuclides, in soil samples. Different chemical separation methods are presented to produce strontium and yttrium sources, the activity of which is determined using proportional counters (PC) or liquid scintillation counters (LSC).90Sr can be obtained from the test samples when the equilibrium between90Sr and90Y is reached or through direct90Y measurement. The selection of the measuring method depends on the origin of the contamination, the characteristics of the soil to be analysed, the required accuracy of measurement and the resources of the available laboratories.

These methods are used for soil monitoring following discharges, whether past or present, accidental or routine, liquid or gaseous. It also covers the monitoring of contamination caused by global nuclear fallout.

In case of recent fallout immediately following a nuclear accident, the contribution of89Sr to the total amount of strontium activity will not be negligible. This standard provides the measurement method to determine the activity of90Sr in presence of89Sr.

The test methods described in this document can also be used to measure the radionuclides in sludge, sediment, construction material and products by following proper sampling procedure.

Using samples sizes of 20 g and counting times of 1 000 min, detection limits of (0,1 to 0,5) Bq·kg-1 can be achievable for90Sr using conventional and commercially available proportional counter or liquid scintillation counter when the presence of89Sr can be neglected. If89Sr is present in the test sample, detection limits of (1 to 2) Bq·kg-1 can be obtained for both90Sr and89Sr using the same sample size, counting time and proportional counter or liquid scintillation counter as in the previous situation.



Standard NumberBS EN ISO 18589-5:2021
TitleMeasurement of radioactivity in the environment. Soil - Strontium 90. Test method using proportional counting or liquid scintillation counting
StatusDefinitive
Publication Date2021-08-17
ReplacesBS ISO 18589-5:2009
Identical National Standard OfISO 18589-5:2019, EN ISO 18589-5:2021
CorrectsBS ISO 18589-5:2019
DescriptorsRadioactive pollution, Radioactive materials, Specimen preparation, Soil surveys, Soil testing, Strontium, Strontium isotopes, Radiation measurement, Radioactivity, Radioactive wastes, Radionuclides, Soils
ICS17.240 Radiation measurements, 13.080.01 Soil quality and pedology in general
CommitteeNCE/2
ISBN978 0 539 16739 9
PublisherBSI
Pages42

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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