METHOD OF MEASURING GASES AND CORRESPONDING ION MOBILITY SPECTROMETRY Russian patent published in 2013 - IPC H01J49/06 

FIELD: physics.

SUBSTANCE: method includes steps of ionising a sample gas in a gas flow (10), directing the ionised gas flow through an elongated ion-mobility measuring chamber (12) defined in the cross-section, filtering (14) ions from the ionised gas flow at a distance from measuring electrodes (e₁, e₂, e₃), allowing passage of only ions coming from a selected point of the cross-section of the flow, separating ions (J_1-n) with differing ion mobilities in the measuring chamber (12) using a transverse static electric field and at least one pair of measuring electrodes (e₁, e₂, e₃) built-in along the wall of the measuring chamber.

EFFECT: high measurement accuracy and simplification of the device.

12 cl, 11 dwg