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Citation: SUN Lu-Lu, XU Chong-Sheng, XU Fu-Xing, ZHOU Zhen, DING Chuan-Fan. Structure and Performance of Polygonal Electrode Linear Ion Trap[J]. Chinese Journal of Analytical Chemistry, ;2018, 46(12): 1872-1877. doi: 10.11895/j.issn.0253-3820.181298 shu

Structure and Performance of Polygonal Electrode Linear Ion Trap

1.
Institute of Mass Spectrometer and Atmospheric Environment, Jinan University, Guangzhou 510632, China;
2.
Department of Chemistry and Laser Chemistry Institute, Fudan University, Shanghai 200433 China

Received Date: 5 May 2018
Revised Date: 20 June 2018

Fund Project: This work was supported by the National Natural Science Foundation of China (No. 21773035).

The polygonal electrode linear ion trap (PeLIT) can produce quadrupolar electric field plus some higher order field, which balances the relationship between mass resolution and electrode manufactruing difficulties. The electrodes of PeLIT are relatively simple, but have a good mass resolving power. This study analyzed the structures and performances of PeLIT through theoretical simulation and experimental study. Simulations showed that the polygonal electrode linear ion traps with different structures had different mass analysis performances, and the negative decapole field reduced its performances significantly. The experimental results showed that the mass resolution of reserpine ions (m/z 609) was more than 2500 using a polygonal electrode ion trap. At the same time, mass selective excitation and tandem mass spectrometry experiments were also performed.
- Linear ion trap,
- Polygonal electrode,
- Simulation,
- Mass spectrometric analysis,
- Mass resolution
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