Results 201 to 210 of about 17,263 (255)

FT-Raman Spectroscopy: Development and Justification

Applied Spectroscopy, 1986
There has long been a widespread interest in the feasibility of Fourier transform Raman spectroscopy. The well-deserved reputation of FT-IR has generated hopes for similar benefits in Raman spectroscopy, and the complementarity of IR and Raman spectroscopy has made the use of a single instrument for both spectroscopies both convenient and cost ...
T. Hirschfeld, B. Chase
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Sampling Methods In FT-Raman Spectroscopy

SPIE Proceedings, 1989
The extension of the Raman technique to the use of excitation wavelengths in the near infrared shows much promise, especially for samples exhibiting strong fluorescence when excited by the visible lasers used in dispersive Raman instrumentation. The dependence of the Raman signal on the fourth power of the excitation wavelength has precluded the common
Philip R. Brierley, Robert J. Rosenthal
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FT Raman spectroscopic studies of wool

Journal of the Society of Dyers and Colourists, 1994
FT Raman spectroscopy has been used to investigate the structure of scoured wool cloth and fibres subjected to hydrogen peroxide bleaching. The advantages of FT Raman spectroscopy over conventional laser Raman and IR spectroscopic techniques are discussed.
L J Hogg, H G M Edwards, D W Farwell, A T Peters   +3 more
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Artifacts In FT-Raman Spectroscopy

SPIE Proceedings, 1989
The rapid improvements in detector technology, interferometer optimization and filter technology have brought the sensitivity in FT-Raman spectroscopy to a point where spectra can be recorded quite readily from most samples. The limitation is no longer due to detector noise.
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FT-Raman spectroscopy of titania hydrolysates

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 1997
Abstract FT-Raman spectroscopy has been used to study the peptisation of titania hydrolysates produced from tetraisopropyltitanate (TPT), chemically modified by reaction with a number of carboxylic acids. During peptisation with nitric acid at 333 K, a colloidal sol of well crystallised anatase was formed. Similar sols were formed by heating at 333 K
Venz, P A, Frost, R L, Bartlett, J R, Woolfrey, J L   +3 more
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Analysis of microsamples with an FT-Raman microscope

Proceedings, annual meeting, Electron Microscopy Society of America, 1992
Rapid developments in near-IR filter and detector technology have resulted in FT-Raman spectroscopy emerging as a powerful technique in both research and analytical laboratories. The more recent advances in FT-Raman instrumentation now emphasize the optimization of different sampling accessories, including microsampling techniques. Microscopes attached
N.T. Kawai, J. Sawatski, C. Lehner
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FT-Raman spectroscopy of biological molecules

Mikrochimica Acta, 1988
Raman spectroscopy of biological molecules is often very difficult if not impossible due to a large fluorescence background from absorbing species, either from the molecule itself or an impurity. Photobleaching is occasionally successful in photochemically removing fluorescent impurities, but the majority of samples are not responsive to such treatment.
Vickie M. Hallmark, Carl G. Zimba, Jerome D. Swalen, John F. Rabolt   +3 more
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FT Raman spectroscopy of drugs in polymers

International Journal of Pharmaceutics, 1990
Abstract The value of Fourier transform Raman spectroscopy in quantifying drug/polymer mixtures is demonstrated. Spectra of promethazine, diclofenac, theophylline and indomethacin in polymeric diluents based on polyethylene oxide, sodium alginate and hydroxypropylmethylcellulose are given.
M.C. Davies, J.S. Binns, C.D. Melia, P.J. Hendra, D. Bourgeois, S.P. Church, P.J. Stephenson   +6 more
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Pressure-tuning FT-Raman spectroscopy

SPIE Proceedings, 1994
Pressure-tuning dispersive Raman spectroscopy, using diamond anvil cells, has many of the common limitations of Raman spectroscopy such as low signal intensity, as well as photodecomposition and fluorescence of many samples. In the present investigations, the pressure-tuning experiment has been successfully coupled to an FT-Raman spectrometer using a ...
Steven M. Barnett, Stephane H. Brienne, Ross D. Markwell, Nancy T. Kawai, Ian S. Butler, Denis F. Gilson, Antonin Vlcek, Jr.   +6 more
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FT-Raman Investigations of Forest Products

Applied Spectroscopy, 1990
FT-Raman spectroscopy has been used to analyze several forest product materials. Spectra of balsa, oak, pine, and redwood have been obtained. These data can be used to differentiate between hard and soft woods by examination of the ratio of the intensities of those bands attributable to cellulose and lignin as well as by the ...
R. C. Kenton, R. L. Rubinovitz
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