Standardless analysis of multicomponent mixtures of substances by time-resolved vibronic spectroscopy

A new approach to the quantitative and qualitative standardless analysis of complex substances based on experimental time-dependent vibronic luminesce nce spectra (in the UV and visible regions) is proposed. The approach requi res no preliminary calculation of absolute intensities for molecular models . It is shown that this analysis can be carried out for both individual sub stances and multicomponent mixtures, including unknown substances and mixtu res of unknown composition. The concentration ranges of mixture components available for the analysis are evaluated, depending on the optical properti es of mixtures.