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Optimization of extraction and structural characterization of bioactive compounds from Musa balbisiana peel. [PDF]
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Rotating samples in FT-RAMAN spectrometers
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 1997It is customary to rotate samples in Raman spectroscopy to avoid absorption or sample heating. In FT-Raman experiments the rotation is always shown (typically 30-60 rpm) because higher speeds are thought to generate noise in the spectra. In this article we show that more rapid rotation is possible. A tablet containing maleic acid and one made up of sub-
A T, De Paepe +3 more
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Pressure-tuning FT-Raman spectroscopy
SPIE Proceedings, 1994Pressure-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 +6 more
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Analysis of milk by FT-Raman spectroscopy
Talanta, 2015Fat, protein, carbohydrates and dry matter were quantified in commercial bovine milk samples, with the relative standard errors of prediction (RSEP) in the 3.4-6.1% range, using the partial least squares (PLS) method based on Raman spectra of liquid milk samples.
Sylwester, Mazurek +3 more
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FT-Raman Spectroscopy: Development and Justification
Applied Spectroscopy, 1986There 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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FT Raman investigations of fast moving samples
AIP Conference Proceedings, 1998Fast moving samples were investigated by conventional and FT Raman spectroscopy. Using near infrared excitation of a Nd-YAG laser instead of the visible excitation by gas-lasers the problem of fluorescence was overcome. The double modulation due to sample movement occurring in FT Raman spectroscopy was avoided by application of the step scan technique.
Salzer, Reiner, Roland, Ulf, Born, René
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FT-Raman Spectroscopy at 1.339 Micrometers
Applied Spectroscopy, 1994The usual laser employed for Fourier transform Raman spectroscopy is a Nd:YAG unit lasing at 1.064 μm. In this work, use of the 1.339-μm lasing emission from Nd:YAG has been demonstrated. The sensitivity of this instrument is comparable to that of conventional FT-Raman instruments, and excellent anti-Stokes spectra can be easily obtained.
Kelly J. Asselin, Bruce Chase
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FT-Raman spectra of platymonas subcordiformis
SPIE Proceedings, 2007Raman spectrum of Platymonas subcordiformis was studied by FT-Raman spectroscopy. The results show that the optimum experiment conditions is that making sample lose solvent with centrifuge, excitation laser power for 360mW and accumulating 70 times. The main peaks of the spectrum are located at 556cm-1, 615cm-1, 880cm-1, 960 cm-1, 1112cm-1, 1457cm-1,
Rong Chen +6 more
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Sampling Methods In FT-Raman Spectroscopy
SPIE Proceedings, 1989The 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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