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Absorption Anomalies in Ratio and Subtraction FT-IR Spectroscopy
Analytical Chemistry, 1998Subtraction and ratioing of strong absorption bands in Fourier transform infrared (FT-IR) spectroscopy produces anomalous absorption errors. One source of error is the instability in the wavenumber scale of the FT-IR spectra. The possible causes of this error are explored.
D D, Weis, G E, Ewing
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FT-IR spectroscopy for identification of closely related lactobacilli
Journal of Microbiological Methods, 2004Fourier Transform Infrared (FT-IR) spectroscopy was used to analyse 56 strains from four closely related species of Lactobacillus, L. sakei, L. plantarum, L. curvatus and L. paracasei. Hierarchical Cluster Analysis (HCA) was used to study the clusters in the data, but in the dendrogram, the spectra were not differentiated into four separate clusters ...
Astrid, Oust +4 more
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The Use of FT-IR Spectroscopy in Microtechnologies
1997Analytical studies accompanying the development of microtechnological production methods can be carried out by means of e.g. FT-IR spectroscopy. The chemical reactions taking place during various dry chemical etching processes of silicon can be observed precisely.
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FT-IR spectroscopy of solid surfaces
Journal of Molecular Structure, 1984Abstract Since Fourier transform infrared (FT-IR) spectrometers offer very high sensitivity, special application methods for solids can be used in the infrared region in which weak radiation power reaches the detector. In this paper measurements of solid surfaces by photoacoustic, diffuse reflectance and emission FT-IR spectroscopy will be presented ...
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Characterization of Paracoccidioides brasiliensis by FT-IR spectroscopy and nanotechnology
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2016Paracoccidioides brasiliensis, the etiological agent of paracoccidioidomycosis, is a dimorphic fungus existing as mycelia in the environment (or at 25°C in vitro) and as yeast cells in the human host (or at 37°C in vitro). Because mycological examination of lesions in patients frequently is unable to show the presence of the fungus and serological ...
Isabelle Ferreira +5 more
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FT-IR photoacoustic depth profiling spectroscopy of enamel
Calcified Tissue International, 1994Photoacoustic Fourier transform infrared (PA-FT-IR) depth profiling spectra of the enamel of an intact human tooth are obtained in a completely nondestructive fashion. The compositional and structural changes in the tissue are probed from the enamel surface to a depth of about 200 microns. These changes reflect the state of tissue development.
Sowa, M. G., Mantsch, H. H.
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Recent applications of FT-IR spectroscopy to polymer systems
Applied Optics, 1978Fourier transform infrared spectroscopy has recently become an important analytical method for investigation of many polymer systems. Several new methods, concerned primarily with digital subtraction of absorbance spectra, are presented. Applications of the method to synthetic polymer research include conformational and configurational analyses ...
J L, Koenig, M K, Antoon
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New Method for Pollen Identification by FT-IR Spectroscopy
Applied Spectroscopy, 2003A new methodology for identification of pollen was developed based on FT-IR spectroscopy. Pollen samples of twenty different plant species were collected and the diffuse reflectance infrared Fourier transform (DRIFTS) and KBr pellet spectra were recorded. Libraries of spectra were created.
C S, Pappas +3 more
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Instrumentation for FT-IR reflection spectroscopy with synchrotron radiation
Analytical and Bioanalytical Chemistry, 2003A versatile experimental set-up for infrared reflectance measurements with synchrotron radiation and its adaptation to a beamline is presented. Particular consideration is given to the collimation and the polarization of incident radiation. The performance is characterized with experimental results.
M, Gensch +4 more
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FT-IR spectroscopy as a sentinel technology in earthworm toxicology
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2014FT-IR spectroscopy is a useful tool for determining the biomolecular profile of micro-samples of body fluids such as coelomic fluid of earthworms. The present study focuses on the usefulness of the earthworm (Perionyx sansibaricus) coelomic fluid for observing pathologically induced biochemical changes.
M, Aja +3 more
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