Dynamic range extension in glow discharge quadrupole ion trap mass spectrometry

Journal Article · Fri Dec 31 23:00:00 EST 1993 · Analytical Chemistry (Washington); (United States)

DOI:https://doi.org/10.1021/ac00073a017· OSTI ID:7114508

Duckworth, D C; Barshick, C M; Smith, D H; McLuckey, S A ^[1]

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

Methods of extending the dynamic range of the quadrupole ion trap have been investigated by utilizing ions generated from a radio frequency powered glow discharge. The success of the glow discharge quadrupole ion trap technique for inorganic analysis is largely dependent upon increasing the dynamic range. The dynamic range has been increased to 10[sup 5] by selective accumulation methods which isolate ions over a small mass region of interest. To accumulate selectively ions of interest, static and dynamic electric fields were applied so that, as all ions were gated into the trap, only the ions of interest were retained. Selective accumulation methods employed include mass-selective instability, single-frequency resonance ejection, combination rf-dc, and entrance end cap dc. These methods, capable of being used alone or in combination, were evaluated with respect to ion-trapping efficiency and linearity of signal response with respect to the injection period. Linear injection curves were obtained, and the ability to couple sequential selective ion accumulation methods into a multiple ramp scan function for multielement quantification was demonstrated. 28 refs., 8 figs.

• DOE Contract Number: AC05-84OR21400
• OSTI ID: 7114508
• Journal Information: Analytical Chemistry (Washington); (United States), Journal Name: Analytical Chemistry (Washington); (United States) Vol. 66:1; ISSN 0003-2700; ISSN ANCHAM
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102 -- Metals & Alloys-- Structure & Phase Studies
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400100* -- Analytical & Separations Chemistry
ALLOYS
ARGON
BRASS
CHARGED PARTICLES
CHEMICAL ANALYSIS
COPPER ALLOYS
COPPER BASE ALLOYS
DYNAMIC MASS SPECTROMETERS
ELECTRIC DISCHARGES
ELECTRIC FIELDS
ELEMENTS
FLUIDS
GASES
GLOW DISCHARGES
INORGANIC COMPOUNDS
ION SOURCES
IONS
MASS SPECTRA
MASS SPECTROMETERS
MASS SPECTROSCOPY
MEASURING INSTRUMENTS
MULTIPOLES
NONMETALS
QUADRUPOLES
QUANTITATIVE CHEMICAL ANALYSIS
RARE GASES
RF SYSTEMS
SPECTRA
SPECTROMETERS
SPECTROSCOPY
TRAPPING
ZINC ALLOYS