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Citation: XU Fu-Xing, DANG Qian-Kun, DING Hang-Yu, HUANG Zheng-Xu, WANG Yuan-Yuan, ZHOU Zhen, DING Chuan-Fan. Performance Investigation of Ion Trap with Various Collision gas and Pressures[J]. Chinese Journal of Analytical Chemistry, ;2017, 45(4): 587-592. doi: 10.11895/j.issn.0253-3820.160826 shu

Performance Investigation of Ion Trap with Various Collision gas and Pressures

1.
Department of Electronic Engineering, Fudan University, Shanghai 200433, China;
2.
Department of Chemistry and Laser Chemistry Institute, Fudan University, Shanghai 200433, China;
3.
Guangzhou Hexin Instrument Co.Ltd, Guangzhou 510530, China

Received Date: 11 November 2016
Revised Date: 12 January 2017

Fund Project: This work was supported by the National Ministry of Science and Technology of China (No. 2011YQ14015006)

Ion trap performances are investigated based on digital ion trap technique with different collision gases at different pressures. Collision gases of helium (4 amu), nitrogen (28 amu) and argon (40 amu) with various pressures are adopted in ion excitation and dissociation stages to investigate the ion trap performances, including mass resolution, signal intensity, tandem mass spectrometric analysis ability and low-mass cut off (LMCO) effect. It is found that when heavy gas of argon is used, energy can be efficiently transferred and LMCO effect is decreased with higher ion capture and dissociation efficiencies but with low mass resolution. Higher mass resolution is realized with helium as collision gas. Furthermore, at the same gas pressure, heavy gas is beneficial to abundant fragment ions and structural information of precursor ion.
- Ion trap,
- Collision gas,
- Pressure,
- Collision induced dissociation,
- Low-mass cut off effect
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