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Proceedings Paper

Improvements In Difference FT-IR Spectroscopy Of Diluted Solutions By A Special Defringing Technique.
Author(s): H. M. Heise
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Paper Abstract

A procedure in the interferogram domain is presented for the elimination of interference fringes in the infrared difference spectra of diluted solutions. For cases the refractive index of the cell window material is not matched to that of the solvent, residual interference fringes will be obtained if there is a change in the refractive index of the solution due to the solute contribution. Here the change in the refractive index is related to a linear shift of that interferogram part causing the channel spectra. By this defringing technique the shift is compensated for in the solvent interferogram. The results are compared with those from zeroing and from substitution of the considered interferogram features.

Paper Details

Date Published: 20 December 1985
PDF: 3 pages
Proc. SPIE 0553, Fourier and Computerized Infrared Spectroscopy, (20 December 1985); doi: 10.1117/12.970792
Show Author Affiliations
H. M. Heise, Institut fur Spektrochemie and angewandte Spektroskopie (Germany)

Published in SPIE Proceedings Vol. 0553:
Fourier and Computerized Infrared Spectroscopy
David G. Cameron; Jeannette G. Grasselli, Editor(s)

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