ISSN:
0377-0486
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
The ultraviolet transmission response function of a double monochromator Raman spectrometer has been obtained in the 28 000-40 000 cm-1 range, using a very simple method, assuming that the two halves of the double monochromator are rigorously identical in the transmission of light. The measured transmission response function of a commercially available double monochromator has been found to vary sharply in the region of 33 000 cm-1. Such a substantial variation in transmission must be taken into account when Raman intensities are measured as a function of the excitation wavelength, even when an internal standard is used, as the absolute frequency of the Raman standard is different from the absolute frequencies of the Raman lines of the sample. This is particularly the case when overtone and combination band intensities are measured relative to a fundamental of the internal standard, since the overtone frequencies are often displaced by more than 1000 wavenumbers from the fundamentals. Failure to make such corrections can lead to substantial errors in a measured resonant Raman excitation profile.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/jrs.1250140502
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