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Calibration of an audio-frequency ion trap mass spectrometer
Cai, Y; Peng, WP; Kuo, SJ; Chang, HC
关键词Audio-frequency Mass Calibration Single Particle Light Scattering
刊名INTERNATIONAL JOURNAL OF MASS SPECTROMETRY
2002-02-15
214期:1页:63-73
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Physics, Atomic, Molecular & Chemical ; Spectroscopy
研究领域[WOS]Physics ; Spectroscopy
关键词[WOS]PAUL TRAP ; PARTICLE ; SINGLE ; SCAN ; SHIFTS
英文摘要A method for calibration of an audio-frequency (AF) ion trap mass spectrometer is described. The method is proposed to surmount the obstacle that there is a lack of a proper calibrant for mass spectrometers in the mass-to-charge ratio (m/z) range of 10(6) to 10(10). To calibrate such mass spectra, we determine the point of ejection, q(eject), on the stability diagram of the ion trap operated in a mass-selective axial instability mode. This is accomplished by measuring the radial secular frequencies (and therefore, the m/z value) of a single trapped particle using a light scattering method, followed by monitoring the action of particle ejection in real time to obtain the q(eject). A delayed ejection with q(eject) = 0.949 +/- 0.004 is found at a trap driving frequency of Ohm/2pi = 200-600Hz. Theoretical analysis for the origin of the delayed ejection indicates that the delay is predominantly resulted from the existence of multipole components in the fields due to trap imperfections. Inclusion of -3% of the octopole with respect to the basic quadrupole field can satisfactorily account for our observations. An m/z accuracy approaching 0.1% is attainable after proper calibration of the AF ion trap mass spectrometer. (Int J Mass Spectrom 214 (2002) 63-73) (C) 2002 Elsevier Science B.V. All rights reserved.
语种英语
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WOS记录号WOS:000174338000006
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被引频次:20[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/83869
专题中国科学院大连化学物理研究所
作者单位1.Acad Sinica, Inst Atom & Mol Sci, Taipei 106, Taiwan
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
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Cai, Y,Peng, WP,Kuo, SJ,et al. Calibration of an audio-frequency ion trap mass spectrometer[J]. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY,2002,214(1):63-73.
APA Cai, Y,Peng, WP,Kuo, SJ,&Chang, HC.(2002).Calibration of an audio-frequency ion trap mass spectrometer.INTERNATIONAL JOURNAL OF MASS SPECTROMETRY,214(1),63-73.
MLA Cai, Y,et al."Calibration of an audio-frequency ion trap mass spectrometer".INTERNATIONAL JOURNAL OF MASS SPECTROMETRY 214.1(2002):63-73.
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