METHOD AND APPARATUS FOR CARRYING OUT ION MOBILITY SPECTROMETRY ANALYSES

摘要

Method and apparatus for carrying out analyses of a gas comprising one or more species Si, Sj, ..., Sn by means of an ion mobility spectrometer which includes a plurality of electrodes (Ei) arranged in a chamber (C) divided by an electrifiable grid (G) into a reaction zone (RZ) provided with an inlet (IC) for the gas to be analyzed and a drift zone (DZ) provided with at least one ion detector (D), wherein said electrodes (Ei) generate at least one electric field (ERZ, EDZ) non-uniform in space along the axis (x) of the chamber (C).