Results 161 to 170 of about 84,835 (218)
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2013
Spectroscopic techniques are widely used in forensic laboratories for quantitative and qualitative analysis. This article provides an overview of the spectroscopic techniques most commonly encountered in forensic laboratories. Infrared spectroscopy, Raman spectroscopy, x-ray fluorescence, scanning electron microscopy, energy-dispersive x-ray ...
Lewis, Simon, Lim, Kieran
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Spectroscopic techniques are widely used in forensic laboratories for quantitative and qualitative analysis. This article provides an overview of the spectroscopic techniques most commonly encountered in forensic laboratories. Infrared spectroscopy, Raman spectroscopy, x-ray fluorescence, scanning electron microscopy, energy-dispersive x-ray ...
Lewis, Simon, Lim, Kieran
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Chromatography and spectroscopic techniques
1999During the past decade considerable advances have taken place in digital and analogue electronics, personal computer systems and instrument design which has enabled dedicated gas chromatography (GC) and high performance liquid chromatography (HPLC) instruments to be designed incorporating compact integrated spectroscopic detectors, particularly mass ...
A. Braithwaite, F. J. Smith
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Spectroscopic Techniques and Chromatography
1985Chromatography is primarily a separation technique, the observed detector response being a record of the quantity of solute molecules eluted from the chromatographic system. Although procedures have been developed for identifying separated components in a mixture, for example the two column GC method (see Experiment 21, Chapter 9), and a system of ...
A. Braithwaite, F. J. Smith
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Planar chromatography coupled with spectroscopic techniques
Journal of Chromatography A, 1995Recent progress in the combination of planar, or thin-layer chromatography (TLC) with a variety of modern spectroscopic techniques is reviewed. The utility of TLC for separation followed by mass spectrometry, with a variety of ionisation techniques, is illustrated with reference to a wide range of compound types including drugs, natural products ...
Somsen, G.W., Wilson, I.D., Morden, W.
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Optical and Spectroscopic Techniques
2007Spectroscopy is the most important method for gaining detailed information on the structure and dynamics of atoms and molecules. The essential criteria of any spectroscopic technique are the attainable spectral resolution and the sensitivity.
Sune Svanberg, Wolfgang Demtröder
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New type of photothermal spectroscopic technique
Applied Optics, 1992We propose a new type of photothermal spectroscopic technique. The experimental setup is simple and the experiment can be readily carried out, even in the difficult environments that are often required for opticaland surface studies of materials. Features of the method proposed here are nondestructive and noncontact; in addition, the simplicity of our ...
H, Saito +3 more
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Chiroptical spectroscopic techniques based on fluorescence
Methods and Applications in Fluorescence, 2014Among the various chiroptical spectroscopic methods circular dichroism (CD), optical rotatory dispersion (ORD), Raman optical activity (ROA), the methods based on fluorescence have so far played a marginal role. Fluorescence detected circular dichroism and circularly polarized luminescence (CPL) were both introduced many years ago with important, but ...
Castiglioni E. +3 more
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Other Spectroscopic Techniques
1987Triethylaluminium Compounds. Pitzer and Gutowski 78 have measured the infrared spectrum of trimethylaluminium (Table 133). From this data one can conclude little because it does not extend below about 700 cm−1. However, the lack of any marked deviations from the normal carbon-hydrogen stretching frequencies favours polar binding rather than protonated ...
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Laser Spectroscopic Technique.
1978Abstract : The design, development and exploitation of first and second generation apparatus for studying the spectroscopy of ultra cold molecules by laser induced fluorescence. This technique was the first joining of supersonic jets and laser optical spectroscopy for the simplification of complex optical spectra, for the observation of new van der ...
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Characterization of the solid-state: spectroscopic techniques
Advanced Drug Delivery Reviews, 2001The physical characterization of pharmaceutical solids is an integral aspect of the drug development process. This review summarizes the use of solid-state spectroscopy techniques used in the physical characterization of the active pharmaceutical ingredient, excipients, physical mixtures, and the final dosage form.
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