METHOD AND APPARATUS FOR PERFORMING ION MOBILITY SPECTROMETRY

摘要

New method and apparatus for performing ion or particle mobility spectrometry are disclosed. The method comprises ionizing a sample in an ionizer 204, injecting the ionized sample into a laminar gas flow 206 and applying an electric field 208 across the laminar gas flow. The conbination of the laminar gas flow and the electric fields results in spatial separation of analyte ions based on ion mobility. The separated ions contact different elements of an electrometer array 210, with the output of the array being analysed to determine the mobility of the analyte ions.