Liquid chromatography-atmospheric

P Dugo, L. Mondello, E. Sebastian , R. Ottana, G. Eirante and G. Dugo, Identification of minor oxygen heterocyclic compounds of citi us essential oils by liquid chromatography-atmospheric pressure chemical ionisation mass specti ometiy , J. Liq. Chromatogr. 22 2991-3005 (1999). [Pg.133]

ZEEB D J, NELSON B c, ALBERT K and DALLUGE J J (2000) Separation and identification of twelve catechins in tea using liquid chromatography/atmospheric pressure chemical ionization-mass spectrometry , Chem, 72, 5020-26. [Pg.159]

Kohler M, NV Heeb (2003) Determination of nitrated phenolic compounds in rain by liquid chromatography/ atmospheric pressure chemical ionization mass spectrometry. Anal Chem 75 3115-3121. [Pg.43]

Specifically for triazines in water, multi-residue methods incorporating SPE and LC/MS/MS will soon be available that are capable of measuring numerous parent compounds and all their relevant degradates (including the hydroxytriazines) in one analysis. Continued increases in liquid chromatography/atmospheric pressure ionization tandem mass spectrometry (LC/API-MS/MS) sensitivity will lead to methods requiring no aqueous sample preparation at all, and portions of water samples will be injected directly into the LC column. The use of SPE and GC or LC coupled with MS and MS/MS systems will also be applied routinely to the analysis of more complex sample matrices such as soil and crop and animal tissues. However, the analyte(s) must first be removed from the sample matrix, and additional research is needed to develop more efficient extraction procedures. Increased selectivity during extraction also simplifies the sample purification requirements prior to injection. Certainly, miniaturization of all aspects of the analysis (sample extraction, purification, and instrumentation) will continue, and some of this may involve SEE, subcritical and microwave extraction, sonication, others or even combinations of these techniques for the initial isolation of the analyte(s) from the bulk of the sample matrix. [Pg.445]

Anacardio, R., Cantalini, M.G., De Angelis, F., and Gentile, M., Quantification of S-carboxymethyl-(R)-cysteine in human plasma by high-performance ion-exchange liquid chromatography/atmospheric pressure ionization mass spectrometry, /. Mass Spectrom., 32, 388, 1997. [Pg.305]

Desai,M.J., Armstrong, D.W. (2004). Analysis of native amino acid and peptide enantiomers by high-performance liquid chromatography/atmospheric pressure chemical ionization mass spectrometry. J. Mass. Spec. 39, 177-187. [Pg.340]

Olah, T. V., McLoughlin, D. A., Gilbert, J. D., The simultaneous determination of mixtures of drug candidates by liquid chromatography/ atmospheric pressure chemical ionisation mass spectrometry as an in-vivo drug screening procedure, Rapid Commun. Mass Spec. 1997, 11, 17—23. [Pg.152]

G.A. van der Doelen, K.J. van den Berg, J.J. Boon, N. Shibayama, E.R. de la Rie, W.J.L. Genuit, Analysis of fresh triterpenoid resins and aged triterpenoid varnishes by high performance liquid chromatography atmospheric pressure chemical ionisation (tandem) mass spectrometry, Journal of Chromatography A, 809, 21 37 (1998). [Pg.33]

McLoughlin, D.A., Olah, T.V., and Gilbert, J.D. 1997. A direct technique for the simultaneous determination of 10 drug candidates in plasma by liquid chromatography/atmospheric pressure chemical ionization mass spectrometry interfaced to a Prospekt solid-phase extraction system. J. Pharm. Biomed. Anal. 15 1893. [Pg.243]

Beaudry F. et al., 1998. In vivo pharmacokinetic screening in cassette dosing experiments Use of online Pros-pekt liquid chromatography/atmospheric pressure chemical ionization tandem mass spectrometry technology in drug discovery. Rapid Commun Mass Spectrom 12 1216. [Pg.293]

Wissiack R., Rosenberg E., and Grasserbauer M., 2000. Comparison of different sorbent materials for online solid-phase extraction with liquid chromatography-atmospheric pressure chemical ionization mass spectrometry of phenols. J Chromatogr B 896 159. [Pg.297]

The method based on immunosorbents coupled on-line with liquid chromatography-atmospheric pressure chemical ionization mass spectrometry [109], discussed in section 9.4.2.1, has been applied to the determination of substituted urea type herbicides. Supercritical fluid extraction with methanol modified carbon dioxide has been applied to the determinants of sulfonyl urea herbicides in soil [261],... [Pg.250]

Kostiainen, R., Kotiano, T., Kuuranne, T. and Auriola, S. (2003) Liquid chromatography-atmospheric pressure ionization/mass spectrometry (LC-API/ MS) in drug metabolism studies. Journal of Mass Spectrometry, 38, 357-372. [Pg.290]

The application of liquid chromatography-atmospheric pressure ionization-mass spectrometry in water analysis has been previously reviewed. The application of this technique for the analysis of synthetic dyes was also discussed [118]. [Pg.432]

Bruins, A.P. Covey, T.R. Henion, J.D. Ion Spray Interface for Combined Liquid Chromatography/Atmospheric Pressure lonization-MS. Anal. Chem. 1987, 59, 2642-2646. [Pg.470]

Mottram, H. Woodbury, S.E. Evershed, R.P. Identification of Triacylglycerol Positional Isomers Present in Vegetable Oils by High Performance Liquid Chromatography/Atmospheric Pressure Chemical lonization-MS. Rapid Commun. Mass Spectrom. 1997,11, 1240-1252. [Pg.474]

Bogusz MJ, Maier RD, Erkens M, Driessen S. 1997. Determination of morphine and its 3- and 6-glucuronides, codeine, codeine-glucuronide and 6-monoacetylmorphine in body fluids by liquid chromatography atmospheric pressure chemical ionization mass spectrometry. J Chromatogr B Biomed Sci Appl 703 115. [Pg.169]

Kagan M, Chlenov M, Kraml CM. 2004. Normal-phase high-performance liquid chromatographic separations using ethoxynonafluorobutane as hexane alternative. II. Liquid chromatography-atmospheric pressure chemical ionization-mass spectrometry applications with methanol gradients. J Chromatogr A 1033 321. [Pg.171]

Prokai L, Zharikova AD, Janaky T, Prokai-Tatrai K. 2000. Exploratory pharmacokinetics and brain distribution study of a neuropeptide FF antagonist by liquid chromatography/atmospheric pressure ionization tandem mass spectrometry. Rapid Commun Mass Spectrom 14 2412. [Pg.174]

Hsieh, Y, Merkle, K., Wang, G., Brisson, J. M., and Korfmacher, W. A. (2003). High-performance liquid chromatography-atmospheric pressure photoionization/tandem mass spectrometric analysis for small molecules In plasma. Anal. Chem. 75, 3122—3127. [Pg.505]

Takino, M., Daishima, S., and Nakahara, T. (2003). Determination of perfluorooctane sulfonate in river water by liquid chromatography/atmospheric pressure photoionization mass spectrometry by automated on-line extraction using turbulent flow chromatography. Rapid Commun. Mass Spectrom. 17, 383—390. [Pg.506]

X. Xu, A.M. van der Craats and P.C.A.M. de Bmyn, Highly sensitive screening method for nitroaromatic, nitramines and nitrate ester explosives by high performance liquid chromatography — atmospheric pressure ionization — mass spectrometry (HPLC-APl-MS) in forensic applications , J. Forensic Sci., 49 No. 6 (2004) 1171-1180. [Pg.243]

C. Nomeir, A. A. Validation of higher-throughput high-performance liquid chromatography/atmospheric pressure chemical ionization tandem mass spectrometry assays to conduct cytochrome P450s CYP2D6 and CYP3A4 enzyme inhibition studies in human liver microsomes. Rapid Commun Mass Spectrom 2000, 14, 207-214. [Pg.423]

K. J. Veals, J. Hsieh, Y. etal. Cassette-accelerated rapid rat screen a systematic procedure for the dosing and liquid chromatography/ atmospheric pressure ionization tandem mass spectrometric analysis of new chemical entities as part of new drug discovery. Rapid Commun Mass Spectrom 2001, 15, 335-340. [Pg.424]

Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...