Gas chromatography-electron impact-mass

Purdon JG, Pagotto JG, Miller RK. 1989. Preparation, stability, and quantitative analysis by gas chromatography and gas chromatography-electron impact mass spectrometry of tert-butyldimethylsilyl derivatives of some alkylphosphonic and alkyl methylphosphonic acids. J Chromatogr 475 261-272. 

Vreken P, Van Lint AEM, Bootsma AH, Overmars H, Wanders RJA, Van Gennip AH (1998) Rapid stable isotope dilution analysis of very-long-chain fatty acids, pristanic acid and phytanic acid using gas chromatography-electron impact mass spectrometry. J Chromatogr 713 281-287... 

Pyrolysis-Gas Chromatography/Electron Impact Mass Spectrometry 541... 

Fig. 2.3. Gas chromatography-electron-impact mass spectrum of the 4,4-dimethyloxa-zoline (DMOX) derivative of trans- 0, c/s-12-18 2 from a commercial conjugated linoleic acid (CLA) mixture.

Fig. 2.5. Partial reconstructed ion chromatograms (RIC) for m/z 333 (molecular ion) (left) and m/z 234 and 262 (allylic ions) (right) from gas chromatography-electron-impact mass spectrometry of 4,4-dimethyloxazoline (DMOX) derivatives of conjugated linoleic acid (CLA) from human adipose tissue. Redrawn from Yuraweez et al. (9) with permission of the authors and Lipids.

Spitzer, V. (1999) Gas Chromatography/(Electron Impact) Mass Spectrometry Analysis of Conjugated Linoleic Acid (CLA) Using Different Derivatization Techniques, in Advances in Conjugated Linoleic Acid Research, Volume 1 (Yurawecz, M.P., Mossoba, M.M., Kramer, J.K.G., Pariza, M.W., and Nelson, G.J., eds.) pp. 110-125, AOCS Press, Champaign, IL. 

The Analysis of Terbutaline in Biological Fluids by Gas Chromatography Electron Impact Mass Spectrometry Biomed. Mass Spectrom. 6(l) 31-37 (1979) CA 91 13321j... 

Paul, B.D., Mitchell, J.M., Mell, L.D., Jr., Sroka, R. and Irving, J. (1987) Gas chromatography—electron impact mass fragmentometric identification and quantitation of lysergic acid diethylamide (LSD) in urine. Clin. Chem., 36, 971. 

Derivatization of Diols and Hydroxy Acids. Di-f-hutyldi-chlorosilane has been used to derivatize a-hydroxy acids, /3-hydroxy acids, alkylsalicyclic acids, anthranilic acid, catechols, and 1,2- and 1,3-diols for analysis by gas chromatography-electron impact mass spectrometry (eq 5). These derivatives are useful for separation. The major fragmentation is that of Si-C bonds. The 1,2-diol in the antibiotic sorangicin has also been derivatized with di-t-butyldichlorosilane. ... 

We performed experimental research on the stability assessment of RVX and identification of its transformation products under the action of equimolar or excess amounts of water. The method for analysis was gas chromatography-electron impact mass spectrometry (GC-EIMS). In a dilute aqueous solution (lOmg/mL) in the presence of 5% phosphoric acid, the concentration of RVX after exposure for 20 days at room temperature without stirring was 2.7mg/mL, or 27% of the initial amount. Since among RVX hydrolysis products both volatile and nonvolatile compounds could be expected, we chose three schemes for sample preparation (i) evaporation to dryness followed by silylation (ii) organic solvent extraction and (iii) silylation of the extract obtained by procedure (ii). 

Gunnar, T, Ariniemi, K., and Lillsunde, P. (2005) Validated toxicological determination of 30 drugs of abuse as optimized derivatives in oral fluid by long column fast gas chromatography/electron impact mass spectrometry. Journal of Mass Spectrometry, 40,739-753. 

Clare, R.A., Davies, D.S., and BailUe, T.A. (1979) The analysis of terbu-taline in biological fluids by gas chromatography electron impact mass spectrometry. Biomedical Mass Spectrometry, 6,31-37. 

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