Pyrolysis-Gas Chromatography-Fourier Transform Infrared Spectroscopy

Pyrolysis-Gas Chromatography-Fourier Transform Infrared Spectroscopy [Pg.263]

Principles and Characteristics Infrared spectrometers, particularly Fourier transform infi-ared (FTIR) instruments, have been used as detectors in gas chromatography [855] offering the capability of compound quantitation and identification. Spectral search requires use of the NIH/EPA library of gas phase spectra. [Pg.263]

Identification of additives by means of PyGC-FTIR is usually difficult. The method is only suitable for polymer formulations with high additive [Pg.263]

The complementary nature of IR and MS has been utilised by Duncan [865] in a PyGC-FTIR-MS system with library search capability in the study of the pyrolysis products of polybutadiene and the antioxidant 2,6-di-r-butyl-4-methylphenol. Oguchi et [Pg.264]

Gonzalez, A. Irusta, L. Femandez-Berridi, M.J. Iriarte, M. Iruin, J.J. Application of pyrolysis/gas chromatography/ Fourier transform infrared spectroscopy and TGA techniques in the smdy of thermal degradation of poly (3-hydro-xybutyrate). Polym. Degrad. Stabil. 2005, 87, 347-354. [Pg.1860]

Pyrolysis-Gas Chromatography—Fourier Transform Infrared Spectroscopy. 263... [Pg.155]

Py-GC-FTIR pyrolysis-gas chromatography-Fourier transform infrared spectroscopy... [Pg.8]

V.A. Basiuk, Pyrolysis of valine and leucine at 500°C identification of less volatile products using gas chromatography Fourier Transform infrared spectroscopy mass spectrometry, J. [Pg.323]

See also Asbestos. Color Measurement. Forensic Sciences Thin-Layer Chromatography. Gas Chromatography Pyrolysis Mass Spectrometry Fourier Transform Infrared Spectroscopy. Microscopy Applications Forensic. Spectrophotometry Diode Array. Textiles Natural Synthetic. X-Ray Absorption and Diffraction X-Ray Diffraction - Powder. X-Ray Fluorescence and Emission X-Ray Fluorescence Theory Energy Dispersive X-Ray Fluorescence Total Reflection X-Ray Fluorescence. [Pg.1672]

Usami, T., Itih, T., Ohtani, H., Tsuge, S. (1990) Structural study of polyacrylonitrile libers during oxidative thermal degradation by pyrolysis-gas chromatography, solid state 13C Nuclear magnetic resonance and Fourier transform infrared spectroscopy, Macromolecules 23, 2460-2465. [Pg.585]

Fourier transform infrared spectroscopy nuclear meagnetic resonance Electron Spin Resonance Pyrolysis-gas chromatography Pyrolysis-mass spectrometry Pyrolysis-Fourier transform infrared spectroscopy pH titration Binding Studies... [Pg.8]

Additionally, a variety of analytical equipment and techniques that allow the examination of small- (and micro-) scale microbial cultures and their products have become available. Examples include near infrared and Fourier transform infrared spectroscopy, which offer the ability for in situ detection of specific compounds in fermentation broth [22]. However, sensitivity and the required sample volumes pose serious obstacles that still have to be overcome. Another alternative is offered by sensitive pyrolysis mass spectroscopy, which was demonstrated to be suitable for quantitative analysis of antibiotics in 5-pl aUquots of fermentation broth when combined with multivariate calibration and artificial neural networks [91]. The authors concluded that a throughput of about 12,000 isolates per month could be expected. Furthermore, standard chromatographic methods such as gas chromatography or high-performance liquid chromatography, possibly in combination with mass spectroscopy (MS) for detection, can provide simultaneous quantitative detection of many metabolic products. [Pg.152]

Figure 12.39 Series of transmission FTIR spectra for (a) Nikkoso precursor AN/MA/ITA, (b) Oxidized in air for 20 min 215°C/15 min 235°C, (c) Oxidized in air for 20 min 215°C/180 min 235°C, (d) Oxidized in air for 20 min 215°C/1800 min 235°C. Source Reprinted from UsamlT, ItohT, Ohtani H.Tsuge S, Structural study of polyacrylonitrile fibers during oxidative thermal degradation by Pyrolysis— Gas Chromatography, Solid State C Nuclear Magnetic Resonance and Fourier Transform Infrared Spectroscopy, Macromolecules, 23, 2460-2465, 1990.

Usami T, Itoh T, Ohtani H, Tsuge S, Structural study of polyacrylonitrile fibers during oxidative thermal degradation by Pyrolysis—Gas Chromatography, Sohd State C Nuclear Magnetic Resonance and Fourier Transform Infrared Spectroscopy, Macromolecules, 23, 2460 2465, 1990. [Pg.497]

Thorbum Bums, D. Doolan, K.P. The discrimination of automotive clear coat paints indistinguishable by Fourier transform infrared spectroscopy via pyrolysis-gas chromatography-mass spectrometry. Anal. Chim. Acta 2005, 539, 157-164. [Pg.1860]

Understanding the relationship between the molecular structure and the thermal stability (decomposition temperature and rate) of the organoclays and the subsequent influence on the stability of the polymer host is critical. Several analytical techniques have been used to determine the thermal stability of different organoclays and to indentify the decomposition products conventional and high-resolution thennogravimetric analysis (TGA) coupled with Fourier transform infrared spectroscopy (FITR) and mass spectrometry (MS), pyrolysis/gas chromatography (GC)-MS, and solid phase microextraction (SPME) [6-12]. [Pg.65]

Dan and co-workers [8] studied the structures and thermal and thermo-oxidative stabilities of the gel and chlorinated natural rubber from latex. The polymers were analysed by chemical analysis, high-resolution pyrolysis-gas chromatography-mass spectroscopy (HR-Py-GC-MS) coupled with Fourier-transform infrared spectroscopy, and thermal analysis techniques [dynamic thermal analysis and thermogravimetric analysis (TGA)]. [Pg.89]

Analytical investigations may be undertaken to identify the presence of an ABS polymer, characterize the polymer, or identify nonpolymeric ingredients. Fourier transform infrared (ftir) spectroscopy is the method of choice to identify the presence of an ABS polymer and determine the acrylonitrile—butadiene—styrene ratio of the composite polymer (89,90). Confirmation of the presence of mbber domains is achieved by electron microscopy. Comparison with available physical property data serves to increase confidence in the identification or indicate the presence of unexpected stmctural features. Identification of ABS via pyrolysis gas chromatography (91) and dsc ((92) has also been reported. [Pg.204]

Characterization Tools for Pyrolysis Oils. It wasn t too many years ago that the only tools available to the scientist interested in pyrolysis oil composition were gas chromatography and thermogravi-metric analysis. The complexity of the pyrolysis oils demands high performance equipment, and a list of such equipment mentioned during the symposium would include proton and carbon nuclear magnetic resonance spectroscopy, free-jet molecular beam/mass spectrometry (16.25), diffuse reflectEuice Fourier transform infrared spectrometry ( ), photoelectron spectroscopy ( ), as well as procedures such as computerized multivariate analysis methods (32) - truly a display of the some of the most sophisticated analytical tools known to man, and a reflection of the difficulty of the oil composition problem. [Pg.3]

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