Standard Svensk standard · SS-EN ISO 13160:2021

Vattenundersökningar - Strontium -90 och strontium -89 - Testmetod med vätskescintillationsräkning eller proportionell räkning (ISO 13160:2021)

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Standard Svensk standard · SS-EN ISO 13160:2021

Vattenundersökningar - Strontium -90 och strontium -89 - Testmetod med vätskescintillationsräkning eller proportionell räkning (ISO 13160:2021)
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Omfattning
This document specifies conditions for the determination of 90Sr and 89Sr activity concentration in
samples of environmental water using liquid scintillation counting (LSC) or proportional counting (PC).
The method is applicable to test samples of drinking water, rainwater, surface and ground water,
marine water, as well as cooling water, industrial water, domestic, and industrial wastewater after
proper sampling and handling, and test sample preparation. Filtration of the test sample and a chemical
separation are required to separate and purify strontium from a test portion of the sample.
The detection limit depends on the sample volume, the instrument used, the sample count time, the
background count rate, the detection efficiency and the chemical yield. The method described in this
document, using currently available LSC counters, has a detection limit of approximately 10 mBq l−1
and 2 mBq l−1 for 89Sr and 90Sr, respectively, which is lower than the WHO criteria for safe consumption
of drinking water (100 Bq·l−1 for 89Sr and 10 Bq·l−1 for 90Sr)[3]. These values can be achieved with a
counting time of 1 000 min for a sample volume of 2 l.
The methods described in this document are applicable in the event of an emergency situation.
When fallout occurs following a nuclear accident, the contribution of 89Sr to the total amount of
radioactive strontium is not negligible. This document provides test methods to determine the activity
concentration of 90Sr in presence of 89Sr.
The analysis of 90Sr and 89Sr adsorbed to suspended matter is not covered by this method.
It is the user’s responsibility to ensure the validity of this test method selected for the water samples
tested

Ämnesområden

Undersökning av vattens fysikaliska egenskaper (13.060.60) Strålningsmätning (17.240)


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Standard Svensk standard · SS-EN ISO 13160:2021

Vattenundersökningar - Strontium -90 och strontium -89 - Testmetod med vätskescintillationsräkning eller proportionell räkning (ISO 13160:2021)
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Produktinformation

Språk: Engelska

Framtagen av: Kemiska vattenundersökningar, SIS/TK 424

Internationell titel: Water quality - Strontium 90 and strontium 89 - Test methods using liquid scintillation counting or proportional counting (ISO 13160:2021)

Artikelnummer: STD-80030654

Utgåva: 2

Fastställd: 2021-08-05

Antal sidor: 56

Ersätter: SS-EN ISO 13160:2015