KINETIC EFFECTS IN SURFACE-ENHANCED RAMAN-SPECTROSCOPY - DOES IT HAVEPOTENTIAL AS AN ANALYTICAL TOOL

The intensity of surface-enhanced Raman spectra, in general, and the r elative intensities of different bands, in particular, depend on many parameters and are usually subject to variation with respect to standi ng time. Previously, several attempts have been made to explain the ph ysical background to some of these variations, but so far no generally valid explanation has been proposed. As a consequence, surface-enhanc ed Raman spectroscopy, despite its extremely high sensitivity, has not yet been accepted as an analytical tool. The work described in this p aper demonstrates that an analytical application is possible under cer tain conditions.