Liquid chromatography-infrared spectroscopy

High performance liquid chromatography, infrared spectroscopy, UV and visible spectrophotometry, and polarography are some of the other major analytical techniques used to determine many diverse classes of compounds. [Pg.104]

Polymer Testing 96. Conference proceedings. Shawbury, 5th-6th Sept. 1996, paper 6. 57 IDENTIFICATION OF ADDITIVES IN RUBBER AND PLASTIC MATERIALS BY COMBINED LIQUID CHROMATOGRAPHY/INFRARED SPECTROSCOPY Sidwell J... [Pg.76]

G. W. Somsen and T. Visser, Liquid Chromatography/Infrared Spectroscopy, in R. A. Meyers (Ed.), Encyclopedia of Analytical Chemistry, WUey, Chichester, 2000,... [Pg.138]

High Performance Liquid Chromatography - Infrared Spectroscopy... [Pg.158]

Flavor research technology has been rapidly changing with the development of very sensitive instmments capable of identifying ingredients, found in very small amounts, in very complex mixtures. Some of these instruments include gas-liquid chromatography, infrared spectroscopy, mass spectrometry, and nuclear magnetic resonance. [Pg.386]

In addition, before the routine use of instrumentation such as gas-liquid chromatography, infrared spectroscopy, nuclear magnetic resonance spectrometry, etc., the identity of components and compositions were determined by isolation. The latter involved the problems of separating compounds of closely related properties. This often explains conflicting and inaccurate data published in the literature. The modern techniques of determining compositions have resolved some of these problems. [Pg.133]

Those areas which have received great attention in Fourier Transform Infrared Spectrometry recently have been the chromatographic infrared spectrometry hybrid systems. This includes gas chromatography-infrared spectrometry and liquid chromatography-infrared spectrometry. Two other areas of current interest are photoacoustic-infrared spectroscopy and the use of infrared spectroscopy to determine impurities in semiconductor materials. [Pg.408]

Atomic Spectrometry Chromatography Distillation Electrochemistry Elemental Analysis, Organic Compounds Gas Chromatography Infrared Spectroscopy Liquid Chromatography... [Pg.39]

Gas Chromatography Infrared Spectroscopy Liquid Chromatography Mass Spectrometry Nuclear Magnetic Resonance (NMR) Radioactivity Raman Spectroscopy X-Ray Analysis... [Pg.392]

INFRARED TECHNOLOGY AND RAMAN SPECTROSCOPY - INFRARED TECHNOLOGY] (Vol 14) Hplc. See ITigh performance liquid chromatography. [Pg.484]

The modern electronic industry has played a very important role in the development of instrumentation based on physical-analytical methods As a result, a rapid boom in the fields of infrared, nuclear magnetic resonance (NMR), Raman, and mass spectroscopy and vapor-phase (or gas-liquid) chromatography has been observed. Instruments for these methods have become indispensable tools in the analytical treatment of fluonnated mixtures, complexes, and compounds The detailed applications of the instrumentation are covered later in this chapter. [Pg.1023]

Very little in the way of advances has occurred since 1971 in the applications of ultraviolet or infrared spectroscopy to the analysis of fluonnated organic compounds Therefore, only gas-liquid chromatography, liquid chromatography, mass spectrometry, and electron scattering for chemical analysis (ESCA) are discussed The application of nuclear magnetic resonance (NMR) spectroscopy to the analysis of fluonnated organic compounds is the subject of another section of this chapter... [Pg.1029]

To measure gas and water vapor permeability, a film sample is mounted between two chambers of a permeability cell. One chamber holds the gas or vapor to be used as the permeant. The permeant then diffuses through the film into a second chamber, where a detection method such as infrared spectroscopy, a manometric, gravimetric, or coulometric method isotopic counting or gas-liquid chromatography provides a quantitative measurement (2). Die measurement depends on the specific permeant and the sensitivity required. [Pg.241]

F. C. Sanchez, T. Hancewicz, B.G.M. Vandeginste and D.L. Massart, Resolution of complex liquid chromatography Fourier transform infrared spectroscopy data. Anal. Chem., 69 (1997) 1477-1484. [Pg.305]

Detection in SFC can be achieved in the condensed phase using optical detectors similar to those used in liquid chromatography or in the gas phase using detectors similar to those used in gas chromatography. Spectroscopic detectors, such as mass spectrometry and Fourier transform infrared spectroscopy, are relatively easily interfaced to SFC compared to the problems observed with liquid mobile phases (see Chapter 9). The range of available detectors for SFC is considered one of its strengths. [Pg.837]

Figure 7.10 Typical optical arrangements employed for detection of (a) vapour phase (b) liquid phase and (c) solid chromatographic phases. After White [167], Reprinted from R. White (ed.), Chromatography/Fourier Transform Infrared Spectroscopy and Its Applications Marcel Dekker Inc., New York, NY (1990), by courtesy of Marcel Dekker Inc.

In the case of heterogeneous polymers the experimental methods need to be refined. In order to analyze those polymers it is necessary to determine a set of functions / (M), which describe the distribution for each kind of heterogeneity i This could be the mass distributions of the blocks in a diblock copolymer. The standard SEC methods fail here and one needs to refine the method, e.g., by performing liquid chromatography at the critical point of adsorption [59] or combine SEC with methods, which are, for instance, sensitive to the chemical structure, e.g., high-pressure liquid chromatography (HPLC), infrared (IR), or nuclear magnetic resonance spectroscopy (NMR) [57],... [Pg.230]

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