STANDARDIZATION OF TRITIUM BY CIEMAT/NIST METHOD WITH LIQUID SCINTILLATION COUNTING IN TURKEY AND UNCERTAINTY BUDGET

Yıl 2021, Cilt: 33 Sayı: 1, 26 - 36, 18.11.2021

Gülten Özçayan Nazife Aslan

Öz

Radioactivity measurements used in many applications and disciplines must be accurate and reliable. Quality control parameters, instrument calibrations, and accuracy of the applied radiochemical methods are performed using traceable radioactive standards and reference materials. The liquid scintillation counting (LSC) system is highly preferred to standardize radionuclides in radionuclide metrology. It has quick and easy sample preparation steps that allow standardization of short-lived radionuclides. Besides, the counting efficiency of the detector in the LSC system can be calculated either by the direct measurement method such as TDCR or by using a tracer technique such as the CIEMAT/NIST method. For these reasons, the number of radionuclides standardized by the LSC method has increased over time. In this study, tritium standard solutions prepared from high activity tritium reference solution were counted in the LSC system. Activity concentration values with the uncertainty were calculated using the CIEMAT/NIST method.

Anahtar Kelimeler

H-3, LSC, CIEAMT/NIST, standardization, uncertainty

Kaynakça

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