Optimization of the liquid scintillation counting technique for the European interlaboratory comparison on gross α/β activity concentrations in water
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A liquid scintillation counting (LSC) measurement method optimization for the gross α/β activity analysis in drinking waters with different chemical and radionuclide composition was performed. The optimized method was suitable to provide gross radioactivity results in drinking waters with the levels of the accuracy and precision similar to those obtained using other radioactivity screening techniques. Robust LSC results contributed to the calculation of gross α/β activity reference values of EC-JRC interlaboratory comparison water samples in 2012. Some of the most common errors in the determination of the gross radioactivity using the LSC are presented.
KeywordsGross α/β activity concentration Liquid scintillation counting Drinking water Interlaboratory comparison
The authors would like to specially thank Dr. Timotheos Altzitzoglou (retired from EC JRC-Geel) for the valuable advices and discussions that helped to considerably improve the work and for his technical support by providing the working measurement infrastructure.
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