Fourier transform infrared photoacoustic

Microphonic Fourier transform infrared photoacoustic spectroscopy (FT-IR/PAS) has emerged as a useful tool for characterizing fractions of a monolayer of organic species adsorbed on opaque, high surface area samples. Such a study of calcined and sulfided hydrodesulfurization catalysts will be discussed. [Pg.391]

FOURIER TRANSFORM INFRARED/ PHOTOACOUSTIC SPECTROSCOPY TO ASSESS SECONDARY STRUCTURE... [Pg.296]

Fourier transform infrared/photoacoustic spectroscopy (FT-IR/PAS) can be used to evaluate the secondary structure of proteins, as demonstrated by experiments on concanavalin A, hemoglobin, lysozyme, and trypsin, four proteins having different distributions of secondary... [Pg.296]

Irudayaraj, J., Yang, H., and Sakhamuri, S. (2002). Differentiation and detection of microorganisms using Fourier transform infrared photoacoustic spectroscopy. /. Mol. Struct. 606,181-188. [Pg.37]

Thompson, S. E., Foster, N. S., Johnson, T. J., Valentine, N. B., and Amonette, J. E. (2003). Identification of bacterial spores using statistical analysis of Fourier transform infrared photoacoustic spectroscopy data. Appl. Spectrosc. 57, 893-899. [Pg.43]

Royce, B. S. H., Teng, Y. C. Fourier Transform Infrared Photoacoustic Spectroscopy of Condensed Phases Proceedings of the Institute of Acoustics, PAS Conference London, U.K. 1981... [Pg.151]

Y. -X. Li et al., Fourier transform infrared photoacoustic spectroscopy study of the adsorption of organophosphorus compounds on heat-treated magnesium oxide. Langmuir 7, 1394-1399... [Pg.295]

Gillette PC, Lando JB, Koening JL (1985) A survey of infrared spectral data processing techniques In Ferraro JR, Basile LJ (eds) Fourier transform infrared spectroscopy -applications to chemical systems, Vol 4 Academic Press, New York, 1-47 Graham JA, Grim WM III, Fateley WG (1985) Fourier transform infrared photoacoustic spectroscopy of condensed-phase samples, In Ferraro JR, Basile LJ (eds) Fourier transform infrared) spectroscopy - applications to chemical systems, Vol 4 Academic Press, New York, 345-392... [Pg.107]

An interesting extension of this type of reaction involves the photosubstitution of the surface-confined cobalt tetracarbonyl system [S] SiCo(CO)4 (where [S] represents a high surface-area silica) and the technique of Fourier transform infrared photoacoustic spectroscopy (FTIR/PAS) has been applied for the first time (172) to study photoreactions of a species on the surface. [Pg.128]

Baesso, M. L., Snook, R. D. and Andrew, J. J. Fourier transform infrared photoacoustic spectroscopy to study the penetration of substances through skin. Journal de Physique IV 4 449-451, 1994. [Pg.162]

Graham. J. A., Grim, N. M. and Fately, W. G. (1985). Fourier Transform infrared photoacoustic spectroscopy of condensed-phase samples. In Fouriertransform infrared spectroscopy Vol. 4 (ed. J. R. Ferraro and L. J. Basil), pp. 345-92. Academic Press, New York. [129]... [Pg.343]

On the other hand, successful identification of bacterial spores has been demonstrated by using Fourier transform infrared photoacoustic and transmission spectroscopy " in conjunction with principal component analysis (PCA) statistical methods. In general, PCA methods are used to reduce and decompose the spectral data into orthogonal components, or factors, which represent the most coimnon variations in all the data. As such, each spectrum in a reference library has an associated score for each factor. These scores can then be used to show clustering of spectra that have common variations, thus forming a basis for group member classification and identification. [Pg.102]

MG Rockley. Fourier-transformed infrared photoacoustic spectroscopy of solids. Appl Spectrosc 34 405-406, 1980. [Pg.546]

Fourier Transform Infrared Spectroscopy (FTIR) and Fourier Transform Infrared - Photoacoustic Spectroscopy (FTIR-PAS)... [Pg.326]

It would be most desirable to study lipid oxidation in intact food products without the extraction or sample preparation steps currently necessary (e.g., pelletization, freeze-drying). Perhaps improvements in techniques such as the Fourier transform infrared photoacoustic spectroscopy (Yang and Irudayaraj, 2000) will open such possibilities. [Pg.165]

Yang, H. and Irudayaraj J. 2000. Characterization of semisolid fats and edible oils by Fourier transform infrared photoacoustic spectroscopy, JAOCS, 77(3), 291. [Pg.172]

A variety of cellulose textile materials, including sized cotton yarns and chemically treated cotton fabrics were studied with fourier transform Infrared photoacoustic spectroscopy (FT-IR/PAS) in our laboratory. The distribution of chemical additives into cotton yarns and fabrics was determined using FT-IR/PAS. It is concluded that FT-IR/PAS is a non-destructive and information-rich analytical technique which is uniquely suitable to the near-surface characterization of a variety of cellulose textile materials. The fundamentals of FT-IR/PAS are also reviewed. [Pg.214]

Fourier Transform Infrared Photoacoustic Spectroscopy (FT-IR-PAS) has been developed recently. In this technique the standard... [Pg.414]

Journal of Applied Polymer Science 69, No.8, 22nd Aug. 1998, p.1669-74 FOURIER TRANSFORM INFRARED-PHOTOACOUSTIC SPECTROSCOPY OF POUY(N-BUTYL METHACRYLATE) ADSORBED EROM SOLUTION ON ALUMINA Pekel N Guven O Hacettepe,University... [Pg.74]

Applied Spectroscopy 51,No.8,Aug.l997,p.l238-44 PHASE-RESOLVED DEPTH PROFILING OF THIN-LAYERED PLASMA POLYMER FILMS BY STEP-SCAN FOURIER TRANSFORM INFRARED PHOTOACOUSTIC SPECTROSCOPY... [Pg.84]

White, R. L. (1985). Analysis of thin layer chromatographic adsorbates by Fourier transform infrared photoacoustic spectroscopy. Anal. Chem. 57 1819-1822. [Pg.196]

Recently, the preparation of two series of PTE of a new type with acid or ionic groups in the polyether SS and the investigation of their stucture-property relationships have been reported [49,65-69]. The first series was based on PTMG (M series) and the second on PEG (E series). The main interest was focused on understanding the influence of structure and morphology on the mechanisms of molecular mobility and ionic conductivity, as well as the relation between segmental mobility and ionic conductivity. For structural and morphological studies, DSC, WAXS, SAXS and Fourier transform infrared photoacoustic spectroscopy (FTIR PAS) were employed. The molecular dynamics and ionic conductivity were studied by DRS and TSDC. [Pg.409]

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