Abstract
A simple technique is described which makes it possible to record Raman difference spectra of binary liquid systems. The main feature is a divided rotating Raman cell for liquids and a gated electronic system. The cancellation of solvent lines in the Raman spectrum of a solution is demonstrated on a 1:1 mixture of CCl<sub>4</sub> and CHCl<sub>3</sub> and on an MnO<sub>4</sub><sup>−</sup>-H<sub>2</sub>O solution. Further advantages of this technique are accurate wavenumber shift measurements (e.g., the isotopic lines of ν<sub>1</sub> in CHCl<sub>3</sub>) and correction of the intensity error of Raman lines obtained from highly absorbing solutions (e.g., I<sub>2</sub>-CHCl<sub>3</sub>).
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