Journal ArticleDOI
Studies in chemical ionization mass spectrometry
John Michnowicz,Burnaby Munson +1 more
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The relatively minor instrumental modifications necessary to allow the operation of a CEC-21-110B mass spectrometer at pressures as high as 0·5 torr are discussed in this article.Abstract:
The relatively minor instrumental modifications necessary to allow the operation of a CEC-21-110B mass spectrometer at pressures as high as 0·5 torr are discussed. The chemical ionization mass spectra of a series of substituted benzophenones have been investigated with several reactant gases: methane, ethane, propane and isobutane. The spectra and behavior of these gases are discussed in general and the specific fragmentation processes of these substituted benzophenones with propane are presented in some detail.read more
Citations
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Gas chromatography-mass spectrometry with supersonic molecular beams.
TL;DR: In this article, a gas chromatography-mass spectrometry (GC-MS) with supersonic molecular beams (SMBs) is proposed, which is based on GC and MS interface with SMBs and on electron ionization (EI) of vibrationally cold analytes in the SMBs (cold EI) in a fly-through ion source.
Journal ArticleDOI
Chemical ionization in Fourier transform mass spectrometry
Journal ArticleDOI
Chemical ionization and electron impact mass spectrometry of some organophosphonate compounds
Samuel Sass,Timothy L. Fisher +1 more
TL;DR: The application of gas chromatography and chemical ionization mass spectrometers to the determination of a variety of alkyl alkyls alklphosphonates, phosphonofluoridates, and an amidophosphorocyanidate is described in this paper.
Journal ArticleDOI
High pressure charge exchange mass spectrometry
Noel Einolf,Burnaby Munson +1 more
TL;DR: In this article, the effects of pressure and repeller field on the distribution of ions in the reactant gases and the charge exchange spectra were investigated and compared with electron ionization spectra.
Journal ArticleDOI
Gas chromatography-vacuum ultraviolet spectroscopy for analysis of fatty acid methyl esters.
TL;DR: The fatty acid profile of several food oil samples were analyzed in this study to demonstrate applicability to real world samples and vacuum ultraviolet detector provides high specificity, sensitivity, and a fast data acquisition rate.
References
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Journal ArticleDOI
Chemical Ionization Mass Spectrometry. I. General Introduction
M. S. B. Munson,Frank H. Field +1 more
Journal ArticleDOI
Free radicals by mass spectrometry. XLIL Ionization potentials and ionic heats of formation for C1—C4 alkyl radicals
F. P. Lossing,G. P. Semeluk +1 more
TL;DR: Ionization potentials for C1-C4 alkyl free radicals have been re-measured by electron impact, using an energy-resolved electron beam from a double-hemispherical electrostatic monochromator as mentioned in this paper.
Journal ArticleDOI
Mass spectrometric determination of the proton affinities of various molecules
Max A. Haney,J. L. Franklin +1 more
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Chemical Ionization Mass Spectrometry. I. General Introduction
M. S. B. Munson,Frank H. Field +1 more