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J Am Soc Mass Spectrom. 2006 Jul;17(7):916-22. Epub 2006 May 12.

Miniature toroidal radio frequency ion trap mass analyzer.

Author information

  • 1Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602, USA. slammerts@byu.edu

Abstract

A miniature ion trap mass analyzer is reported. The described analyzer is a 1/5-scale version of a previously reported toroidal radio frequency (rf) ion trap mass analyzer. The toroidal ion trap operates with maximum rf trapping voltages about 1 kVp-p or less; however despite the reduced dimensions, it retains roughly the same ion trapping capacity as conventional 3D quadrupole ion traps. The curved geometry provides for a compact mass analyzer. Unit-mass resolved mass spectra for n-butylbenzene, xenon, and naphthalene are reported and preliminary sensitivity data are shown for naphthalene. The expected linear mass scale with rf amplitude scan is obtained when scanned using a conventional mass-selective instability scan mode combined with resonance ejection.

PMID:
16697659
DOI:
10.1016/j.jasms.2006.02.009
[PubMed]
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