Gas chromatography/negative chemical

Buser HR (1976), Anal. Chem. 58 2913-2919.. .Selective detection of brominated aromatic compounds using gas chromatography/negative chemical ionization mass spectrometry"... [Pg.76]

Xiao, X.-Y. McCaUey, D.V. McEvoy, J. Analysis of estrogen in river water and effluents using solid-phase extraction and gas chromatography-negative chemical ionisation mass spectrometry of the pentafluorobenzyl derivatives. J. Chromatogr., A 2001, 923, 195-204. [Pg.1535]

Mateo-Vivaracho, L., Cacho, J. and Ferreira, V. (2007) Quantitative determination of wine polyfunctional mercaptans at nanogram per litre by gas chromatography-negative chemical ionization mass spectrometric analysis of their pentafluorobenzyl derivatives,... [Pg.221]

Lai B-W, Liu B-M, Mahk PK, Wu H-F. Combination of liquid-phase hollow fiber membrane microextraction with gas chromatography-negative chemical ionization mass spectrometry for the determination of dichlorophenol isomers in water and urine. Anal Chim Acta 2006 576(1) 61-66. [Pg.274]

Derivatization is also useful to detect volatile metabolites. Liu et al. [282] described a specific, rapid, and sensitive in situ derivatization solid-phase microextraction (SPME) method for determination of volatile trichloroethylene (TCE) metabolites, trichloroacetic acid (TCA), dichloroacetic acid (DCA), and trichloroethanol (TCOH), in rat blood. The metabolites were derivatized to their ethyl esters with acidic ethanol, extracted by SPME and then analyzed by gas chromatography/negative chemical ionization mass spectrometry (GC-NCI-MS). After validation, the method was successfully applied to investigate the toxicokinetic behavior of TCE metabolites following an oral dose of TCE. Some of the common derivatization reagents include acetyl chloride and TV-methyl-iV- ft-b u (y Idi methyl si I y I) tro (1 uoroacctam i nc (MTBSTFA) for phenols and aliphatic alcohols and amines, dansyl chloride and diazomethane for phenols, dansyl chloride for amines, acidic ethanol and diazomethane for carboxylic acids, and hydrazine for aldehydes. [Pg.172]

Mateo-Vivaracho, L, Ferreira, V., and Cacho, J. (2006). Automated analysis of 2-methyl-3-furanthiol and 3-mercaptohexyl acetate at ng L-l level by headspace solid-phase microextracion with on-fibre derivatisation and gas chromatography—negative chemical ionization mass spectrometric determination,/ Chromatogr. A, 1121,1-9. [Pg.158]

Collins, C., Awada, M.M., Zhou, X., and Dedon, P.C. (2003) Analysis of 3 -phosphoglycolaldehyde residues in oxidized DNA by gas chromatography/ negative chemical ionization/mass spectrometry. Chem. Res. Toxicol, 16, 1560-1566. [Pg.47]

Castells P, Santos EJ, Galceran MT (2004) Solid-phase extraction versus solid-phase microextraction for the determination of chlorinated paraffins in water using gas chromatography-negative chemical ionisation mass spectrometry. J Chromatogr A 1025 157-162... [Pg.105]

Russo. M. V., Capanclla. L.. and Avino. P. (2002). Deiermination of organophosphorous pesticide residues in human lis.sues by capillaiy gas chromatography-negative chemical ionization mass spectrometry analysis. J. Chromaiogr. B Anal. Technoi. Biomed. Ufe Sci. 780, 431-441. [Pg.700]

Colhn, O.L., et al. (2009) Fast gas chromatography negative chemical ionization tandem mass spectrometry of explosive compounds using dynamic colhsion-induced dissociation. International Journal of Mass Spectrometry, 279, 93-99. [Pg.475]

Plasma by Gas Chromatography Negative Chemical Ionization Mass Spectrometry... [Pg.154]

Determination of an Antisecretory Trimethyl Prostaglandin E2 Analog in Human Plasma by Combined Capillary Column Gas Chromatography-Negative Chemical Ionization Mass Spectrometry... [Pg.296]

Quantitative Analysis of 6-Hydroxy-melatonin in Human Urine by Gas Chromatography-Negative Chemical Ionization Mass Spectrometry Anal. Biochem. 110(1) 208-215 (1981) CA 94 135205g... [Pg.300]

M. Kala, M. Kochanowski. The Determination of A9-Tetrahydrocannabinol (9THC) and 11-nor-9-Carboxy-A9-Tetrahydrocannabinol (THCCOOH) in Blood and Urine Using Gas Chromatography Negative Ion Chemical Ionisation Mass Spectrometry (GC-MS-NCI), Chemical Analysis (Warsaw), 51, 2006. [Pg.320]

Hubbard WC, Bickel C, Schleimer RP. 1994. Simultaneous quantitation of endogenous levels of cortisone and cortisol in human nasal and bronchoalveolar lavage fluids and plasma via gas chromatography-negative ion chemical ionization mass spectrometry. Anal Biochem 221 109-117. [Pg.190]

Korfmacher WA, Rushing LG, Siitonen PH, et al. 1987. Confirmation of heptachlor epoxide and octachlor epoxide in milk via fused silica gas chromatography/negative ion chemical ionization mass spectrometry. J High Resolut Chromatogr Commun 10 332-336. [Pg.139]

Kozar, M., and Fox, A. (2002), Analysis of a stable halogenated derivative of muramic acid by gas chromatography-negative ion chemical ionization tandem mass spectrometry, J. Chromatogr., 946, 229-238. [Pg.541]

Gas chromatography [9, 10] Fast gas chromatography/negative-ion chemical ionization mass spectrometric (GC/NICI-MS) assay combined with rapid and nonlaborious sample preparation is presented for the simultaneous determination of benzodiazepines and a-hydroxy metabolites, zaleplon, and zopiclone in whole blood. The compounds were extracted from 100 pi of whole blood by liquid-liquid extraction (LLE) and derivatized by N-methyl-N-(ferf-butyldimethylsilyl)trifluoroaceta-mide (MTBSTFA). [Pg.360]

Mizuishi, K., Takeuchi, M. and Hobo, T. (1998) Trace metal analysis of tributyltin and triphenyltin compounds in seawater by gas chromatography-negative ion chemical ionisation mass spectrometry./. Chromatogr. A, 800, 267-273. [Pg.86]

S.-A.A. Fredriksson, L.-G. Hammarstrom, L. Henriksson and H.-A.A. Lakso, Trace determination of alkyl methylphosphonic acids in environmental and biological samples using gas chromatography/negative-ion chemical ionization mass spectrometry and tandem mass spectrometry, J. Mass Spectrom., 30, 1133-1143 (1995). [Pg.281]

Simultaneous Determination of Different Prostaglandins in Human Plasma Using Gas Chromatography/Negative Ion Chemical-Ionization Tandem Mass Spectrometry (GC-NICI-MS/MS)... [Pg.636]

Schweer H, Meese CO, Watzer B, Seyberth HW (1994) Determination of prostaglandin El and its main plasma metabolites 15-keto-prostaglandin EO and prostaglandin EO by gas chromatography/negative ion chemical ionization triplestage quadrupole mass spectrometry. Biol Mass Spectrom 23 165-170... [Pg.638]

Miyajima, T., Tanaka, T., and Koike, 1. (2005). Determinig N enrichment of dissolved organic nitrogen in environmental waters by gas chromatography/negative-ion chemical ionization mass spectrometry. Limnol. Oceanogr. Methods 3, 164-173. [Pg.461]

Hsu FF, Wang L, Bier DM. Determination of cortisol in human plasma by gas chromatography/negative ion chemical ionization/mass spectronietry Anal Biochem 1994 216 401-5. . ... [Pg.2045]

HJ Leis, G Fauler, G Raspotnig, W Windischhofer. Quantitative determination of the angiotensin-converting enzyme inhibitor lisinopril in human plasma by stable isotope dilution gas chromatography/negative ion chemical ionization mass spectrometry. Rapid Commun Mass Spectrom 12 1591—1594, 1998. [Pg.349]

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