Ion mobility analyzer, combination device thereof, and ion mobility analysis method

摘要

An ion mobility analyzer, combination device thereof, and ion mobility analysis method. The ion mobility analyzer comprises an electrode system that surrounds the analytical space and a power device that attaches to the electrode system an ion mobility electric potential field that moves along one space axis. During the process of analyzing mobility of ions to be measured, by always placing the ions to be measured in the moving ion mobility electric potential field, and keeping the movement direction of the ion mobility electric potential field consistent with the direction of the electric field on the ions to be measured within the ion mobility electric potential field, theoretically a mobility path of an infinite length can be formed so as to distinguish ions having mobility or ion cross sections that have very small differences.

主权项

1. An ion mobility analyzer, comprising:
an electrode system around an analytical space; and a first power supply adapted to apply voltages to the electrode system for forming a moving drift electric field in at least a portion of the analytical space along an axis, such that specific analyte ions are always in and have the same moving direction as that of the drift electric field during ion mobility analysis, wherein radio frequency voltages for radial ion confinement are not applied for at least one portion of the analysis time in order to avoid damage on resolution of ion mobility separation through heating by the radio frequency voltages.