公开(公告)号：EP2269210A4

公开(公告)日：2016-10-19

申请号：EP09726857

申请日：2009-04-02

申请人： ENVIRONICS OY

发明人： MATTILA TERHI ,  ANTTALAINEN OSMO ,  KÄRPÄNOJA ESKO ,  PAAKKANEN HEIKKI ,  KÄTTÖ TERO ,  SAUKKO ERKKA

IPC分类号： H01J49/06 ,  G01N27/62 ,  H01J49/22 ,  H01J49/28

CPC分类号： G01N27/622 ,  G01N27/624

摘要： The invention relates to a method and device for measuring gaseous substances, in which the method comprises the stages: ionization of the sample gas in a gas flow, leading of the ionized gas flow through an elongated ion-mobility measuring chamber in the cross-section defined by it, filtering out of ions from the ionized gas flow at a distance from the measuring electrodes, permitting the passage of only the ions travelling from the flow cross-section at the selected point, separation of ions with a different ion mobility, with the aid of a transverse static electric field and at least one measuring-electrode pair arranged along the wall of the measuring chamber.