Laser desorption mass spectrometry of a levitated single microparticle in a quadrupole ion trap

Journal Article · Wed Mar 15 00:00:00 EST 1995 · Analytical Chemistry (Washington)

DOI:https://doi.org/10.1021/ac00102a001· OSTI ID:28708

Yang, M; Dale, J M; Whitten, W B; Ramsey, J M ^[1]

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1. Oak Ridge National Lab., TN (United States)

Techniques for microparticle levitation in a vacuum ion trap and switching of electric fields from particle levitation mode to ion trapping mode prior to laser desorption/ionization and mass analysis are described. Single microparticles of rubidium chloride and copper oxide with a size of approximately 20 {mu}m have been levitated in a quadrupole ion trap and ablated by a Nd/YAG laser (532 nm) followed by ion mass analysis in the same ion trap. The mass spectrum of an organic sample (tetraphenylphosphonium bromide) that was deposited on the surface of a SiC microparticle has been similarly measured. 26 refs., 4 figs.

• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 28708
• Journal Information: Analytical Chemistry (Washington), Vol. 67, Issue 6; Other Information: PBD: 15 Mar 1995
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
66 PHYSICS
PARTICULATES
LEVITATION
MASS SPECTRA
IONS
TRAPPING
RUBIDIUM COMPOUNDS
COPPER OXIDES
TRAPS
MASS SPECTROMETERS
LASER RADIATION
ORGANIC COMPOUNDS