Positive and Negative Spectral Interpretation

Both infrared and Raman spectra may be used as fingerprints of a sample. A bank of the infrared and Raman spectra of the constituents of the type 

Chart 13 Regions of strong solvent absorptions in the near infrared 

I The solvent strongly absorbs in this region and should not be used. 

In the interpretation of infrared and Raman spectra, there is no substitute for experience and, if possible, guidance from an expert in the field should be sought by the inexperienced. 

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