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Liquid chromatography-infrared spectrometry

In Chapter 12, the use of mass spectrometry and Fourier transform infrared spectrometry (FTIR) for GC detection was discussed. Details of these techniques were individually given in Chapters 10 and 12. Much of the discussion presented in Chapter 16 is applicable here. Both liquid chromatography-mass spectrometry (LC-MS) and liquid chromatography-infrared spectrometry (LC-IR) have been adapted to HPLC detection in recent years. [Pg.383]

Gas chromatography Liquid chromatography Infrared spectrometry Low resolution mass spectrometry... [Pg.34]

Liquid chromatography-infrared spectrometry (LC-IR) combines the separating power of LC with the identification and quantitative capabilities of FTIR. [Pg.108]

Nelson (1967) has presented data on the neutral lipid composition of the erythrocytes of several species, namely, the cow, dog, goat, horse, pig, rabbit, rat, and sheep. He determined the cholesterol content by three methods gas-liquid, thin-layer, and column chromatography, the last in conjunction with infrared spectrophotometry. The results obtained by the three methods were in good agreement. In erythrocytes of the cow, for example, cholesterol comprised 30.2, 28.4, and 27.9% of the total lipid extract by gas-liquid chromatography, infrared spectrometry, and thin-... [Pg.159]

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]

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]

Liquid Chromatography-Mass Spectrometry Infrared evaporator LC eluate... [Pg.136]

Table 5.7 Theoretically predicted polypeptides from the trypsin digestion of S-lacto-globulin (/3LG) . Reprinted from J. Chromatogr., A, 763, Turula, V. E., Bishop, R. T., Ricker, R. D. and de Haseth, J. A., Complete structure elucidation of a globular protein by particle beam liquid chromatography-Fourier transform infrared spectrometry and electrospray liquid chromatography-mass spectrometry - Sequence and conformation of /3-lactoglobulin , 91-103, Copyright (1997), with permission from Elsevier Science... Table 5.7 Theoretically predicted polypeptides from the trypsin digestion of S-lacto-globulin (/3LG) . Reprinted from J. Chromatogr., A, 763, Turula, V. E., Bishop, R. T., Ricker, R. D. and de Haseth, J. A., Complete structure elucidation of a globular protein by particle beam liquid chromatography-Fourier transform infrared spectrometry and electrospray liquid chromatography-mass spectrometry - Sequence and conformation of /3-lactoglobulin , 91-103, Copyright (1997), with permission from Elsevier Science...
Abbreviations DCM, dichloromethane DIC, 1,3-diisopropylcarbodiimide DIEA, diiso-propylethylamine DMAP, 4-dimethylaminopyridine DMF, IVJV-dimethylformamide ELSD, evaporative light scattering detection HOBt, hydroxybenzotriazole IR, infrared LC/MS, high-pressure liquid chromatography/mass spectrometry NMM, V-methylmorpho-line NMR, nuclear magnetic resonance PyBop, benzotriazol-l-yloxytripyrrolidino-phosphonium hexafluorophosphate SAR, structure-activity relationship TFP, tetrafluorophenol THF, tetrahydrofuran. [Pg.151]

Several triterpenes and the tetraterpene perhydro-/ -carotene have been identified (Murphy et ai, 1967) in the branched-cyclic hydrocarbon fraction of Green River (Eocene) shale. This was the first time that a tetraterpene had been isolated from a geological sample, although sesqui-, di-, and triterpenes had been identified in this and other sediments. Gas-liquid chromatography, mass spectrometry, NMR, and infrared spectroscopy were used for identification. [Pg.523]

Liquid Chromatography-Mass Spectrometry Liquid Chromatography-Fourier Transform infrared Liquid Chromatography-Nuciear Magnetic Resonance Spectrometry Amino Acids... [Pg.2519]

See also-. Bioassays Overview. Chemometrics and Statistics Multivariate Calibration Techniques. Infrared Spectroscopy Near-Infrared. Liquid Chromatography Size-Exclusion Liquid Chromatography-Mass Spectrometry Liquid Chromatography-Nuclear Magnetic Resonance Spectrometry. Pharmaceutical Analysis Drug... [Pg.3622]

A variation on the GC-MS technique includes coupling a Fourier transform infrared spectrometer (FT-IR) to a gas chromatograph. The substances that elute from the gas chromatograph are detected by determining their infrared spectra rather than their mass spectra. A new technique that also resembles GC-MS is high-performance liquid chromatography-mass spectrometry (HPLC-MS). An HPLC instrument is coupled through a special interface to a mass spectrometer. The substances that elute from the HPLC column are detected by the mass spectrometer, and their mass spectra can be displayed, analyzed, and compared with standard spectra found in the computer library built into the instrument. [Pg.847]

See other pages where Liquid chromatography-infrared spectrometry is mentioned: [Pg.108]    [Pg.62]    [Pg.108]    [Pg.62]    [Pg.467]    [Pg.784]    [Pg.606]    [Pg.691]    [Pg.1153]    [Pg.616]    [Pg.348]    [Pg.26]    [Pg.444]    [Pg.251]    [Pg.251]    [Pg.180]    [Pg.239]    [Pg.281]    [Pg.445]    [Pg.136]    [Pg.61]    [Pg.51]    [Pg.104]    [Pg.521]    [Pg.341]    [Pg.126]    [Pg.551]    [Pg.395]   


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