Novel linear ion trap mass analyzer composed of four planar electrodes

Journal of the American Society for Mass Spectrometry
Yishu SongWolfgang R Plass

Abstract

A novel linear ion trap mass analyzer was developed using just four elongated planar electrodes, mounted in parallel, and employing an RF potential for ion trapping in the radial and axial directions. Mass analysis was achieved using the mass-selective instability scan with ion ejection in the radial direction. The performance of this new device was characterized in comparison with the 6-electrode rectilinear ion trap (RIT) from which it is derived. The 4-electrode trap gives optimum performance in an asymmetric geometry, just like the original optimized 6-electrode RIT. The strong RF fringing fields at the ends of the RF rods account for axial ion trapping without use of extra electrodes or an axial DC voltage. Field calculations and simulations have been carried out to study the trapping potential inside RITs with various configurations. Demonstrated capabilities include analysis of externally injected ions with mass resolution in excess of 1000 and a mass/charge range of 650 Th as well as tandem mass spectrometry capabilities. The geometric simplicity and performance characteristics of the 4-electrode RIT make it particularly attractive in the development of next generation miniaturized mass spectrometers.

References

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Nov 1, 2003·Analytical Chemistry·Amy M TabertR Graham Cooks
Jun 24, 2004·Proceedings of the National Academy of Sciences of the United States of America·John E P SykaDonald F Hunt
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Dec 15, 2005·Journal of the American Society for Mass Spectrometry·Amy M TabertR Graham Cooks

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Citations

Jul 19, 2008·Journal of the American Society for Mass Spectrometry·Gary A Salazar, Tsutomu Masujima
Feb 2, 2010·The Review of Scientific Instruments·A V Ermakov, B J Hinch
Oct 1, 2015·Analytical Chemistry·Dalton T SnyderR Graham Cooks
Aug 1, 2012·Rapid Communications in Mass Spectrometry : RCM·Liang WangChuan-Fan Ding
Mar 4, 2010·Journal of Mass Spectrometry : JMS·J Raymond GibsonStephen Taylor
May 7, 2014·Rapid Communications in Mass Spectrometry : RCM·Ailin LiDaniel E Austin
Jul 17, 2015·Journal of the American Society for Mass Spectrometry·Mircea Guna
Jan 3, 2007·Journal of Mass Spectrometry : JMS
May 25, 2013·Analytical Chemistry·Dan JiangChuan-Fan Ding
Mar 6, 2007·Analytical Chemistry·Daniel E AustinMilton L Lee
Oct 5, 2007·Analytical Chemistry·Miriam FicoWilliam J Chappell
Sep 2, 2006·Analytical Chemistry·Liang GaoZheng Ouyang

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