TY  - JOUR
AU  - Gačnik, Jan
AU  - Sarap, Nataša
AU  - Mazej, Darja
AU  - Prosen, Helena
AU  - Štrok, Marko
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0969804318311709
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8227
AB  - 90Sr detection efficiency determination was applied for liquid scintillation counting (LSC) by computing a model for the relation between detection efficiency and the time passed since radiochemical separation. This allowed more flexibility in analysis times after separation as the model accounts for 90Y in-growth. Establishment of secular equilibrium was therefore not required for LSC measurements. In addition, this approach increases counting efficiency compared to classical ones as both 90Sr and 90Y spectrums are used. This in turn has a positive impact on minimum detectable activity. The method was validated using proficiency test samples for both Čerenkov radiation measurement and scintillation cocktail measurement. Commonly used extraction material Sr-resin was compared to alternative, TK100 resin. Inductively-coupled plasma mass spectrometry measurements for recovery determination showed limitations for TK100 usage due to incomplete Sr retention on the resin. Limitations were further confirmed by LSC activity measurements. © 2019 Elsevier Ltd
T2  - Applied Radiation and Isotopes
T1  - Liquid scintillation counter calibration approach for 90Sr detection and testing performance of TK100 resin
VL  - 151
SP  - 111
EP  - 115
DO  - 10.1016/j.apradiso.2019.04.039
ER  - 

@article{
author = "Gačnik, Jan and Sarap, Nataša and Mazej, Darja and Prosen, Helena and Štrok, Marko",
year = "2019",
abstract = "90Sr detection efficiency determination was applied for liquid scintillation counting (LSC) by computing a model for the relation between detection efficiency and the time passed since radiochemical separation. This allowed more flexibility in analysis times after separation as the model accounts for 90Y in-growth. Establishment of secular equilibrium was therefore not required for LSC measurements. In addition, this approach increases counting efficiency compared to classical ones as both 90Sr and 90Y spectrums are used. This in turn has a positive impact on minimum detectable activity. The method was validated using proficiency test samples for both Čerenkov radiation measurement and scintillation cocktail measurement. Commonly used extraction material Sr-resin was compared to alternative, TK100 resin. Inductively-coupled plasma mass spectrometry measurements for recovery determination showed limitations for TK100 usage due to incomplete Sr retention on the resin. Limitations were further confirmed by LSC activity measurements. © 2019 Elsevier Ltd",
journal = "Applied Radiation and Isotopes",
title = "Liquid scintillation counter calibration approach for 90Sr detection and testing performance of TK100 resin",
volume = "151",
pages = "111-115",
doi = "10.1016/j.apradiso.2019.04.039"
}

Gačnik, J., Sarap, N., Mazej, D., Prosen, H.,& Štrok, M.. (2019). Liquid scintillation counter calibration approach for 90Sr detection and testing performance of TK100 resin. in Applied Radiation and Isotopes, 151, 111-115.
https://doi.org/10.1016/j.apradiso.2019.04.039

Gačnik J, Sarap N, Mazej D, Prosen H, Štrok M. Liquid scintillation counter calibration approach for 90Sr detection and testing performance of TK100 resin. in Applied Radiation and Isotopes. 2019;151:111-115.
doi:10.1016/j.apradiso.2019.04.039 .

Gačnik, Jan, Sarap, Nataša, Mazej, Darja, Prosen, Helena, Štrok, Marko, "Liquid scintillation counter calibration approach for 90Sr detection and testing performance of TK100 resin" in Applied Radiation and Isotopes, 151 (2019):111-115,
https://doi.org/10.1016/j.apradiso.2019.04.039 . .