APPARATUS AND METHOD FOR CONTROLLING ION BEHAVIOR IN ION MOBILITY SPECTROMETRY

摘要

Method and apparatus are provided for controlling ion behavior in an ionbased analysis system. The system for controlling ion behavior in an ion-based analysis system includes an ion source, an ion filter including electrodes separated by an analytical gap for generating an ion filter field, and an arrangement for controlling ion behavior in the flow path, wherein ions are separated according to species based on ion-mobility-based behavior in the field. In one embodiment charge dissipative surfaces in the flow path prevent charge buildup that otherwise can impact ion behavior. In another embodiment of the present invention, electronic control of ion behavior for optimization of mobility-based ion species filtering and control are implemented. A structure of partially conducting control material supporting a plurality of control electrodes is formed. These supported control electrodes are laid out as an addressable array.