Study on quench effects in liquid scintillation counting during tritium measurements

The quenching properties of nitromethane, nitric acid, acetone and saturated solutions of chloroform, carbon tetrachloride, dichloro-methane, and a blend of carbon tetrachloride and chloroform mixed with an Ultima Gold uLLT liquid scintillation cocktail were investigated by using a Quantulus 1220 as well as TRICARB 2800TR liquid scintillation counters. With respect to all investigated quenching agents, nitromethane showed higher quenching action and solubility as well as a remarkable time stability. The implications of this finding for further routine tritium determinations are presented and discussed.

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“…It should be remark that the same behaviour due to aromatics nitrification within scintillation cocktail was previously reported in [10].…”

Section: Resultssupporting

confidence: 84%

Nitromethane and other quenching agents used to determine the tritium activity concentration by liquid scintillation spectroscopy

Varlam

Făurescu

Vagner

et al. 2014

J Radioanal Nucl Chem

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“…Purification of the combustion water was considered a necessity [8,16,17], given that the analysis of tritium from the combustion water without any purification encountered some problems: different impurities and high acidity sample [18,19]. The measured pH values of combustion water were below 1.…”

Section: Preparation Proceduresmentioning

confidence: 99%

Organically bound tritium level in vegetation at ICIT tritium removal facility

Vagner

Varlam

Făurescu

et al. 2014

J Radioanal Nucl Chem

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In order to evaluate the impact of tritium on wild vegetation around ICIT we have monitored the tritium concentrations in precipitation, air, soil, grass and green wheat from a specific area near the tritium removal facility during vegetation periods in 2012-2013. The tissue free water tritium concentration showed the influence of tritium level in precipitation, with higher values during the summer (around 2 Bq l -1 ) and lower values during the autumn (around 1.3 Bq l -1 ). The same behavior was observed for the total organically bound tritium level.

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Validation of direct methods for biogenic fraction assessment in fuels on a liquid scintillation counter

Stojković

Todorović

Nikolov

et al. 2022

J Radioanal Nucl Chem

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Study on quench effects in liquid scintillation counting during tritium measurements

Cited by 6 publications

References 9 publications

Nitromethane and other quenching agents used to determine the tritium activity concentration by liquid scintillation spectroscopy

Nitromethane and other quenching agents used to determine the tritium activity concentration by liquid scintillation spectroscopy

Organically bound tritium level in vegetation at ICIT tritium removal facility

Validation of direct methods for biogenic fraction assessment in fuels on a liquid scintillation counter

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