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Sampling an RF-Powered Glow Discharge Source with a Double Quadrupole Mass Spectrometer

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Abstract:

A double quadrupole mass spectrometer has been assembled to perform collision-induced dissociation (CID) of molecular ions sampled from a radio-frequency (rf) powered glow discharge atomization/ionization source. Low-energy (E lab = 20 and 40 eV) collisions with argon target atoms efficiently dissociate species of the form M2 +, MAr+, MO+, and Ar2 +, and residual gas species. Exemplary CID mass spectra illustrate the enhanced reduction of potential molecular isobars relative to scattering losses of analyte (atomic) ions.

Keywords: Collision-induced dissociation; Glow discharge mass spectrometry; Molecular interferences

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702904087569

Affiliations: Department of Chemistry, Howard L. Hunter Chemical Laboratories, Clemson University, Clemson, South Carolina 29634-1905

Publication date: May 1, 1990

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