Accession Number:

ADA235575

Title:

A Glow Discharge Ion Source with Fourier Transform Ion Cyclotron Resonance Mass Spectrometric Detection

Descriptive Note:

Technical rept. no. 34, Aug 1990-Mar 1991

Corporate Author:

FLORIDA UNIV GAINESVILLE DEPT OF CHEMISTRY

Personal Author(s):

• Barshick, Christopher M.
• Eyler, John R.

Report Date:

1991-05-10

Pagination or Media Count:

24.0

Abstract:

A glow discharge ion source has been coupled to a Fourier transform ion cyclotron resonance mass spectrometer using a series of four electrostatic lenses to accelerate and focus ions generated external to the instruments high magnetic field into its analyzer cell. Like other glow discharge mass spectrometers, glow discharge-Fourier transform ion cyclotron resonance can provide a quantitative measure of bulk analyte concentration with good precision and accuracy. Although detection limits currently attainable are several orders of magnitude higher than the commercially available magnetic sector based instrument, this approach holds promise for ultra high massultra high resolving power mass analysis. Several schemes are proposed to lower the detection limits of the technique while still providing high enough resolution to resolve isobaric interferences.

Descriptors:

• *GLOW DISCHARGES
• *MASS SPECTROMETERS
• DETECTION
• CELLS
• MASS
• ACCURACY
• LIMITATIONS
• PRECISION
• INSTRUMENTATION
• POWER
• ANALYZERS
• ELECTROSTATICS
• LENSES
• FOURIER SPECTROSCOPY
• ION SOURCES
• MEASUREMENT
• MAGNETIC FIELDS

Subject Categories:

• Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE