Shpol'skii spectrometry, a distinct method in environmental analysis

Abstract

Whereas common fluorescence and phosphorescence spectra of organic molecules in solutions show little details, Shpol'skii spectra exhibit completely resolved vibronic transitions, enabling the analytical distinction between isomeric compounds. In a simplified qualification, the Shpol'skii technique combines the sensitivity inherent to luminescence spectroscopy with the selectivity of infrared spectra. There are however two main limitations as far as its applicability is concerned: (i) cryogenic temperature conditions are required and (ii) the analytes should be compatible with the solvent matrix, typically an-alkane.