Atmospheric pressure ionization mass spectrometry with laser-produced ions
Journal Article
·
· Anal. Chem.; (United States)
In this work laser ionization at atmospheric pressure has been characterized as an ionization source for mass analyzed ion mobility measurements. Laser ionization has been explored in different atmospheric pressure gases including N/sub 2/, air, Ar, P-10, and CO/sub 2/ and the resulting ion mobilities in the different gases have been compared. Further, ionization via Ni..beta.. source ionization in these gases in an IMS has been studied and the results were compared to the laser ionization. In each case the ions produced in the IMS are injected into a quadrupole mass spectrometer and mass analyzed. The authors found that in almost every example studied the molecular ion (M/sup +/) or MH/sup +/ is formed with no resulting fragmentation from the laser or Ni ..beta.. source. In addition the K/sub o/ value of each species has been generally found to change as a function of ..cap alpha.., the polarizability, except for CO/sub 2/ drift gas where large clusters are found to form around the organic ionic core.
- Research Organization:
- Univ. of Michigan, Ann Arbor
- OSTI ID:
- 5335234
- Journal Information:
- Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 58:9; ISSN ANCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400104* -- Spectral Procedures-- (-1987)
AIR
ARGON
BETA DECAY RADIOISOTOPES
BETA SOURCES
BETA-MINUS DECAY RADIOISOTOPES
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL ANALYSIS
DATA
ELEMENTS
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
FLUIDS
GASES
INFORMATION
INTERMEDIATE MASS NUCLEI
ION SOURCES
IONIZATION
ISOTOPES
LASERS
MASS SPECTROSCOPY
NEODYMIUM LASERS
NICKEL 63
NICKEL ISOTOPES
NITROGEN
NONMETALS
NUCLEI
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PARTICLE SOURCES
PHOTOIONIZATION
QUANTITATIVE CHEMICAL ANALYSIS
RADIATION SOURCES
RADIOISOTOPES
RARE GASES
SOLID STATE LASERS
SPECTROSCOPY
YEARS LIVING RADIOISOTOPES
400104* -- Spectral Procedures-- (-1987)
AIR
ARGON
BETA DECAY RADIOISOTOPES
BETA SOURCES
BETA-MINUS DECAY RADIOISOTOPES
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL ANALYSIS
DATA
ELEMENTS
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
FLUIDS
GASES
INFORMATION
INTERMEDIATE MASS NUCLEI
ION SOURCES
IONIZATION
ISOTOPES
LASERS
MASS SPECTROSCOPY
NEODYMIUM LASERS
NICKEL 63
NICKEL ISOTOPES
NITROGEN
NONMETALS
NUCLEI
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PARTICLE SOURCES
PHOTOIONIZATION
QUANTITATIVE CHEMICAL ANALYSIS
RADIATION SOURCES
RADIOISOTOPES
RARE GASES
SOLID STATE LASERS
SPECTROSCOPY
YEARS LIVING RADIOISOTOPES