Aqueous polystyrene-fluor nanosuspensions for quantifying alpha and beta-radiation

摘要

Fluor-containing nanoparticle suspensions prepared from styrene-in-water microemulsions were used to quantify C-14 in various sample matrices by aqueous liquid scintillation counting. These suspensions exhibited greater quench resistance than a conventional organic cocktail and were very efficient at detecting higher energy beta(-) emitters and alpha emitters. A polymerizable scintillant was prepared to prevent leaching of fluors. The relationship between particle size, kinetic energy of beta(-) particles and counting efficiency was simulated by a theoretical model.