This International Standard specifies the test methods and their associated bases for measuring the activity of strontium-90 (90Sr) in equilibrium with yttrium-90 (90Y) and strontium-89 (89Sr), pure beta-emitting radionuclides, in water samples. Various chemical separation processes for producing strontium and yttrium measurement samples are explained, 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 properties of the water to be analyzed, the required accuracy of the test results and the available laboratory resources. These test methods are used for water monitoring. They record past or present accident-related or routine liquid or gaseous discharges. This includes monitoring contamination caused by global fallout. In the event of fallout immediately after a nuclear accident, the contribution of strontium-89 (89Sr) to the total amount of strontium activity is not insignificant. This International Standard covers the test methods for determining the activity concentration of strontium-90 (90Sr) in the presence of strontium-89 (89Sr).
EN ISO 13160:2015 Referenced Document
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EN ISO 13160:2015 history
2021EN ISO 13160:2021 Water quality - Strontium 90 and strontium 89 - Test methods using liquid scintillation counting or proportional counting (ISO 13160:2021)
2015EN ISO 13160:2015 Water quality - Strontium 90 and strontium 89 - Test methods using liquid scintillation counting or proportional counting