High performance liquid ionization-mass spectroscopy

Stintzing FC, Schieber A and Carle R. 2002. Identification of betalains from yellowbeet (beta vulgaris L.) and cactus pear (Opuntiaficus-indica L. Mill.) by high performance liquid chromatography-electrospray ionization mass spectroscopy. J Agric Food Chem 50 2302—2307. [Pg.48]

G. J. Lehr, T. L. Barry, G. Petzinger, G. M. Hanna, S. W. Zito, Isolation and identification of process impurities in trimethoprim drug substance by high-performance liquid chromatography, atmospheric pressure chemical ionization liquid chro-matography/mass spectrometry and nuclear magnetic resonance spectroscopy, J. Pharm. Biomed. Anal. 19 (1999), 373-389. [Pg.452]

Field desorption mass spectrometry Heteronuclear multiple-quantum correlation Heteronuclear multiple-quantum correlation Homonuclear Hartmann-Hash spectroscopy High performance liquid chromatography High resolution electrospray ionization High resolution first atom bombardment massspectrometry... [Pg.95]

Chemical analysis of hazardous substances in air, water, soil, sediment, or solid waste can best be performed by instrumental techniques involving gas chromatography (GC), high-performance liquid chromatography (HPLC), GC/mass spectrometry (MS), Fourier transform infrared spectroscopy (FTIR), and atomic absorption spectrophotometry (AA) (for the metals). GC techniques using a flame ionization detector (FID) or electron-capture detector (BCD) are widely used. Other detectors can be used for specific analyses. However, for unknown substances, identification by GC is extremely difficult. The number of pollutants listed by the U.S. Environmental Protection Agency (EPA) are only in the hundreds — in comparison with the thousands of harmful... [Pg.5]

El-Hela, A.A., Al-Amier, H.A., and Ibrahim, T.A. 2010. Comparative study of the fla-vonoids of some Verbena species cultivated in Egypt by using high-performance liquid chromatography coupled with ultraviolet spectroscopy and atmospheric pressure chemical ionization mass spectrometry. J. Chromatogr. A 1217 6388-6393. [Pg.442]

In most respects, the standard approach taken to analyze the fatty acids of functional foods is similar to that for conventional foods. The steps are to extract the total lipids or fatty acids, convert the fatty acids to a suitable derivative (often to fatty acid methyl esters (FAME)), and analyze the derivatized fatty acids by a suitable chromatographic technique, usually GC with flame ionization detection (FID), Other chromatographic techniques, including gas chromatography-mass spectrometry (GC-MS) and high-performance liquid chromatography (HPLC), may be required. Nonchromatographic techniques such as infrared (IR) spectroscopy may be used in some simations, perhaps because of the speed of analysis. [Pg.101]