2Analysis device and method for the analysis of substances by ion mobility spectrometry

摘要

Analysis device for analyzing substances by ion mobility spectrometry, comprising: a) an ion mobility spectrometer with a reaction chamber (5) and a drift chamber (7), a switchable ion gate (6) being arranged between the reaction chamber (5) and the drift chamber (7), b ) a first field generating device (50, 51, 52) of the ion mobility spectrometer, which is set up to generate an electric field in the reaction chamber (5) to generate a movement of analyte ions differentiable by ion mobility spectrometry towards the ion gate (6), c) an electrospray device ( 40, 41), which has an electrospray source (40), wherein the electrospray device (40, 41) is set up to use the electrospray source (40) to supply a liquid to the electrospray device (40, 41) that contains a substance to be analyzed and a solvent comprises spraying in nebulized form into the reaction chamber (5), d) an evaporation device, d ie is formed by the first field generating device (50, 51, 52), the evaporation of the solvent contained in the sprayed mist (42) inside the reaction chamber (5) exclusively or predominantly by that generated by the first field generating device (50, 51, 52 ) generated electric field takes place, the field strength generated by the field generating device (50, 51, 52) is so high that the particles contained in the mist (42) sufficient kinetic energy is supplied, which is sufficient for the evaporation of the solvent.