Liquid scintillation determination of low level components in complex mixtures of radionuclides.

A new approach to simultaneous activity measurements of the complex radionuclide mixtures using liquid scintillation counting, which is applicable to the analysis of the environmental and technological samples, is presented. The method is based on specially developed software 'SpectraDec', realized on a Windows 95/98/NT platform and a spectra library created for different kinds and levels of quenching. The method allows analysis of complex mixtures when the activity ratios of the individual components vary considerably.