Abstract
The proposed and validated method for determination of 90Sr content in environmental samples (water, soil and plant) is based on the radiochemical analytical separation of 90Y from the sample and measuring its activity after the establishment of radioactive equilibrium with 90Sr. Validation is the confirmation by examination and provision of objective evidence that they meet the individual requirements stipulated for a specific use. Validation of method was done based on the blank samples for water by adding 90Sr known activity and using reference materials of soil (IAEA-326) and plant (IAEA-330). Content of 90Sr in environmental samples was determined by α/β low level proportional counter. The accuracy and the precision of the applied method are confirmed and the method is validated and can be used for determination of 90Sr in environmental samples. On the other hand, participations in interlaboratory comparisons are confirmed that the adequacy of the validated method is ensured.
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