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Absorbance Compensation Technique in the Analytical Laboratory

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Modern Fourier transform infrared instruments, which are designed around a laser calibrated wavelength determination, make it possible to obtain high quality absorbance subtracted infrared spectra. This technique coupled with solvent variations can provide unambiguous characterization of mixtures. The use of the absorbance subtraction procedure in identification, comparison (quality control), and surface effects is illustrated by several examples.

Keywords: Absorbance compensation; Fourier transform infrared; Polymers

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/000370278774331107

Affiliations: 1: Carnegie-Mellon Institute of Research, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213; present address: Mobay Chemical Corporation, Penn Lincoln Parkway West, Pittsburgh, PA 15205 2: Carnegie-Mellon Institute of Research, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213

Publication date: July 1, 1978

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