Structure and Performance of Polygonal Electrode Linear Ion Trap

This study investigated the relationship between the electric field distribution and the ion trap structures, and the performances of PeLIT through theoretical simulation and experimental study. Research results of simulation showed that the polygonal electrode linear ion traps with different structures had different electric field distributions and mass analysis performances. The negative decapole field distorted the 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 carried.Graphical abstractA linear ion trap was built with four polygonal electrodes which could produce quadrupolar electric field plus some higher order fields. The experimental results showed that its mass resolution was more than 2500, and the mass selective excitation and tandem mass spectrometry performance were also very well.
Source: Chinese Journal of Analytical Chemistry - Category: Chemistry Source Type: research