Ocean Optics IDRaman mini Install - Manual (Page 27)

2: Set-up and Operation
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Wavenumbers
Dynamic Raman Scattering (DRS)
DRS is a spectroscopic technique developed to enhance spectra produced by free floating particles in
solution. The feature is available both on the system’s firmware and in IDRaman Software.
DRS measures the extra noise created when particles move in and out of the laser beam used to create the
spectrum. This technique was developed by Scott and Carron
1 to remove the interfering background from
material surrounding the moving particles and the container material.
The principle of DRS is that the solvent matrix surrounding small free floating particles is constant and
the container material is also constant. However, the spectrum produced by a low concentration of
particles will exhibit large fluctuations due to their movement in and out of the laser beam.
Button Function
DRS When this button is pressed the software pops up a control for the number of spectra
to acquire. When the DRS button is released the IDRaman mini acquires and
displays the number of spectra chosen. DRS will produce optimal results with short
integration times and statistically most significant with a relatively large number of
acquisitions.
When the acquisitions are completed the DRS spectrum will be displayed.