M. Takiue et al., LIQUID SCINTILLATION RADIOASSAY FOR LOW-ACTIVITY BETA-EMITTER MIXTURES BY THE METHOD OF LEAST-SQUARES, Journal of radioanalytical and nuclear chemistry, 200(3), 1995, pp. 247-258
From the practicable viewpoint for environmental radioactivity measure
ment and monitoring, the liquid scintillation radioassay has been appl
ied to low-level pure-beta and gamma-emitter mixtures by using the mos
t probable value theory. In low activity measurement, it is required t
o select a suitable emulsion scintillator and to deal with the calcula
ted data statistically. Detection limit for a solution sample has been
roughly estimated to be 10(-2) Bq ml(-1).