HIGH PERFORMANCE ION MOBILITY SPECTROMETER APPARATUS AND METHODS

摘要

An ion mobility spectrometry method wherein ions are separated along a drift axis while providing a drift gas flow in a direction that is substantially neither in the direction of the drift axis nor opposite to the drift axis. Ion mobility spectrometer operation methods use a cross-directional gas flow in a drift tube and/or a segmented drift tube for pre-separation.

主权项

1. A ion mobility spectrometer method, comprising:
ionizing a sample with at least one component; pulsing the ionized sample into a drift tube; separating the ionized sample along a drift axis of the drift tube, and; providing a cross drift flow substantially in a direction that is greater than zero but less then one hundred and eighty degrees from the drift axis.