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题名: Calibration of an audio-frequency ion trap mass spectrometer
作者: 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
发表日期: 2002-02-15
卷: 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
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.
关键词[WOS]: PAUL TRAP ;  PARTICLE ;  SINGLE ;  SCAN ;  SHIFTS
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000174338000006
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/83869
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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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

Recommended Citation:
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.
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