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A glow discharge ion source with Fourier transform ion cyclotron resonance mass spectrometric detection

✍ Scribed by Christopher M. Barshick; John R. Eyler

Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
545 KB
Volume
3
Category
Article
ISSN
1044-0305

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✦ Synopsis

A glow discharge (GD) ion source has been coupled to a Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometer using a four-element electrostatic lens to accelerate and focus ions generated external to the instrument's high magnetic field into its analyzer cell. Like other GD mass spectrometers, GD-FT-ICR 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, CD-FT-ICR holds promise for ultrahigh resolving power elemental mass analysis. Several schemes are proposed to lower the detection limits of the technique while still providing high enough resolution to resolve isobaric interferences.

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