193 nm Laser photoionization and photodissociation for isomer differentiation in Fourier-transform mass spectrometry
- 1 September 1990
- journal article
- Published by American Chemical Society (ACS) in Journal of the American Society for Mass Spectrometry
- Vol. 1 (5) , 361-365
- https://doi.org/10.1016/1044-0305(90)85015-e
Abstract
Energetic (6.4 eV) multiphoton ionization (MPI) or photodissociation, effected interchangeably in a Fourier-transform mass spectrometer, can differentiate isomers that yield similar electron ionization spectra. Selectivity is shown for isomers of C7H8, C7H9N, C7H7F, C8H10, but not of C6H3Cl{3} and C14H10. The contrasting MPI fragmentations and ionization efficiencies, as well as high sensitivities, are of substantial analytical utility. The high ionization efficiency makes possible high resolution MPI spectra, such as 470,000 (FWHH) for the molecular ion of anthracene, from a single laser pulse.Keywords
This publication has 28 references indexed in Scilit:
- Isomer identification by metastable decay rates of laser-produced ionsAnalytical Chemistry, 1988
- Analytical multiphoton ionization mass spectrometry. Part I. Theory and instrumentationMass Spectrometry Reviews, 1988
- Multiphoton‐Ionization‐Mass Spectrometry (MUPI‐MS) [New Analytical Methods (34)]Angewandte Chemie International Edition in English, 1988
- Multi-photon mass spectrometry and unimolecular ion decayInternational Journal of Mass Spectrometry and Ion Processes, 1987
- Optically selective molecular mass spectrometryAnalytical Chemistry, 1987
- Laser multiphoton ionization-dissociation mass spectrometryChemical Reviews, 1985
- Resonant two-photon ionization spectroscopy in supersonic beams for discrimination of disubstituted benzenes in mass spectrometryAnalytical Chemistry, 1984
- Multiphoton ionization mass spectroscopy of p-xylene at 193 and 248 nmChemical Physics Letters, 1982
- Mass spectrometry of aromatic molecules with resonance-enhanced multiphoton ionizationAnalytical Chemistry, 1982
- ArF excimer laser multiphoton-ionization mass spectrometry of organic moleculesInternational Journal of Mass Spectrometry and Ion Physics, 1980