Some Applications of Fourier Transform Infrared Photoacoustic Spectroscopy

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A new photoacoustic cell for use with Fourier transform infrared spectrometers is detailed. Photoacoustic infrared spectra showing high sensitivity on a variety of chemical systems are presented. Comparison of the photoacoustic infrared spectra with transmission and attenuated total internal reflectance spectra show that saturation effects can play a prominent role in the photoacoustic spectra. Spectral subtractions and study of the situ chemical reactions are possible using the photoacoustic technique. The photoacoustic and diffuse reflectance techniques yield very similar spectra.

Keywords: Infrared; Instrumentation, photoacoustic; Interferometry, infrared; Techniques, spectroscopic

Document Type: Research Article


Affiliations: Digilab, Division of Bio-Rad Laboratories, 237 Putnam Avenue, Cambridge, Massachusetts 02139

Publication date: November 1, 1981

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