Liquid Chromatography-MS

ECD = electron capture detector GC = gas chromatography GLC = gas liquid chromatography MS = mass spectrometry... [Pg.139]

ECD = electron capture detector GC = gas chromatography GFF = glass fiber filter(s) HPLC = high performance liquid chromatography MS = mass spectrometry NIOSH = National Institute of Occupational Safety and Health nitro reagent = A/-4-nitrobenzyl-A/-/ -propylamine UV = ultraviolet... [Pg.156]

Here we describe a concise method for the analysis of the 20 or so most important plasma amino acids by positive-ion liquid chromatography-(MS/MS). The method is especially useful for the follow-up of dietary treatment. [Pg.58]

EC = electron capture detection FID = flame ionization detector GC = gas chromatography hexa = hexabrominated biphenyl HRGC = high resolution gas chromatography HRMS= high resolution mass spectrometry LC = liquid chromatography MS = mass spectrometry NCI = negative chemical ionization RED = plasma emission detection PBBs = polybrominated biphenyls... [Pg.393]

In food analysis, sensitivity is not the only requirement for analytical method development. Besides confirmation of the identity of pesticides, the identification of nontarget analytes is also important. One powerful tool is LC/MS, especially when it is combined with appropiate sample-treatment procedures it allows one to obtain detection limits adequate for trace-level analysis. Liquid chromatography-MS has demonstrated that it is an effective way to obtain both qualitative and quantitative information. [Pg.754]

Recent advances in electrospray ionization (ESI), atmospheric-pressure chemical ionization (APCI), thermospray, and particle beam LC-MS have advanced the analyst toward the universal HPLC detector, but price and complexity are still the primary stumbling blocks. Thus, HPLC-MS remains expensive and the technology has only recently been described. Early commercial LC-MS uses particle beam and thermospray sources, but ESI and APCI interfaces now dominate. Liquid chromatography MS can represent a fast and reliable method for structural analyses of nonvolatile compounds such as phenolic compounds (36,37), especially for low-molecular-weight plant phenolics (38), but the limited resolving power of LC hinders the widespread use of its application for phenolics as compared to GC-MS. [Pg.786]

Ultimately major efforts to develop coupled chromatographic techniques have been performed to alleviate the problem of manual sample pretreatment and to enhance sensitivity and selectivity in the analysis of PAHs in foodstuffs (192) and environmental samples (193-195). Liquid chromatography/MS (196,197), GC/MS (175), HPLC with UV absorbance, fluorescence (177) (see Fig. 4), or electrochemical (ED) detection (179), and ELISA immunoassay (198) have been successfully used for the determination of HAAs. [Pg.898]

Abbreviations GLC, gas-liquid chromatography MS, mass spectrometry HPLC, high performance liquid chromatography IR, infra-red DEAE, diethylaminoethyl NMR, nuclear magnetic resonance TLC, thin layer chromatography. [Pg.109]

GC, gas chromatography HPLC, high-performance liquid chromatography MS, mass spectroscopy AA, atomic absorption GFAA, graphite furnace atomic absorption ICP, inductively coupled plasma UV-VIS, ultraviolet-visible molecular absorption spectroscopy IC, ion chromatography. [Pg.4]

Analysis of the composition and purity of aromatherapy products relies on a number of well-established scientific techniques. The principles and application of those most commonly employed, such as GC (gas-liquid chromatography), MS (mass spectrometry) and optical rotation, are explained. The importance of the human senses in the physiological analysis and appreciation of essential oils is also outlined. [Pg.4]

Note. ELISA = enzyme-linked immunosorbent assay, FACS = fluorescence-activated cell sorting, HPLC = high-performance liquid chromatography, IHC = immunohistochemistry, LC/MS = liquid chromatography/MS = mass spectrometry, LPS = lipopolysaccharide (endotoxin), NA = not applicable, PAHA = (nonhuman) primate anti-human antibodies. [Pg.136]

A rapid method for making acetonides, coupled with liquid chromatography-MS (LC-MS) has been used to study the structure of ecdysteroid metabolites. Information about the structure can be deduced from chromatographic retention times. Mono-, di-, and tri-acetonides are well separated in HPLC.55... [Pg.137]

The analytical techniques that best meet these criteria are those based on the combination of chromatography with MS, either liquid chromatography/MS (LC/MS) or GC/MS. The most commonly used approaches for trace level organic impurity identification are therefore MS based. Note that an overview of MS and its application in the pharmaceutical industry was presented in the previous edition of this treatise. [Pg.3799]

BAA = 2-buto vacetic acid BE = 2-butoxyethanol BEA = 2-butoxyethanol acetate ECD = electron capture detector FID = flame ionization detection 6GC = gas chromatography HCl = hydrochloric acid HPLC = high performance liquid chromatography MS = mass spectrometry NaCI = Sodium chloride RSD = relative standard deviation UV = ultraviolet absorbance detection v/v = volume/volume w/v = weight/volume... [Pg.354]

Wainhaus, S. et al., Ultra fast liquid chromatography-MS/MS for pharmacokinetic and metabolic profiling within drug discovery, Am. Drug Discov., 2(1), 6, 2007. [Pg.31]

Source Adapted from Nassar, A.F. and Talaat, R.E., Drug Discov. Today, 9, 317, 2004. With permission. Abbreviations H-D, hydrogen-deuterium LC, liquid chromatography MS, mass spectrometry MS-MS, tandem mass spectrometry MS3, ion trap NMR, nuclear magnetic resonance QTOF, quadrupole time-of-flight. [Pg.232]

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