Improvements In Difference FT-IR Spectroscopy Of Diluted Solutions By A Special Defringing Technique.

H. M. Heise

doi:10.1117/12.970792

20 December 1985 Improvements In Difference FT-IR Spectroscopy Of Diluted Solutions By A Special Defringing Technique.

H. M. Heise

Proceedings Volume 0553, Fourier and Computerized Infrared Spectroscopy; (1985) https://doi.org/10.1117/12.970792
Event: 1985 International Conference on Fourier and Computerized Infrared Spectroscopy, 1985, Ottawa, Canada

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.

Citation Download Citation

H. M. Heise "Improvements In Difference FT-IR Spectroscopy Of Diluted Solutions By A Special Defringing Technique.", Proc. SPIE 0553, Fourier and Computerized Infrared Spectroscopy, (20 December 1985); https://doi.org/10.1117/12.970792

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