M00001379
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ISO 13160 1st Edition, July 15, 2012 Water quality - Strontium 90 and strontium 89 - Test methods using liquid scintillation counting or proportional counting
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Availability date: 07/13/2021
Description / Abstract:
This International Standard specifies the test methods and their
associated principles for the measurement of the activity of
90Sr in equilibrium with 90Y, and
89Sr, pure beta-emitting radionuclides, in water
samples. Different chemical separation methods are presented to
produce strontium and yttrium sources, the activity of which is
determined using a proportional counter (PC) or liquid
scintillation counter (LSC). The selection of the test method
depends on the origin of the contamination, the characteristics of
the water to be analysed, the required accuracy of test results and
the available resources of the laboratories.
These test methods are used for water monitoring following, past
or present, accidental or routine, liquid or gaseous discharges. It
also covers the monitoring of contamination caused by global
fallout.
When fallout occurs immediately following a nuclear accident,
the contribution of 89Sr to the total amount of
strontium activity is not negligible. This International Standard
provides the test methods to determine the activity concentration
of 90Sr in presence of 89Sr.