| 主权项 |
1. A gas analyzing device, comprising:
a) an ion mobility spectrometer; b) an energy supply device which acts on a reaction chamber of the ion mobility spectrometer and which is geared to manipulating the density of free reactant ions in the reaction chamber by supply of energy, c) wherein the energy supply device includes a first field generation device which is geared to generating an electric field in the reaction chamber; d) a negative-pressure generation device which is coupled to a reaction chamber which is geared to generating a negative pressure with respect to the atmospheric pressure at least in the reaction chamber, e) wherein the negative-pressure generation device generates a negative pressure within a range from 2 mbar to 100 mbar absolute pressure in the reaction chamber, and f) wherein the first field generation device generates in the reaction chamber a field strength of the electric field, at which, at a given negative pressure, particles in the reaction chamber are accelerated between two collisions as a result of supply of energy by the electric field because of the thereby reduced particle density such that desired free reactant ions are cleared of undesired binding partners thereof and/or bonds of the desired reactant ions with undesired binding partners are completely or partially suppressed, g) wherein free reactant ions are free of water molecules or other unwanted binding partners bound thereto. |
