G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 27/62 (2006.01) B01D 59/44 (2006.01) G01N 27/66 (2006.01)
Patent
CA 2093657
2093657 9207255 PCTABS00012 The objective of the invention is a method for detection of alien matter contents in gas, in which method the gas and the substances contained in it are ionized in an ionization room (1). By the present methods impurities in gases cannot be determined fast and in small concentrations. In the method of the invention the ions contained in the gas are separated in a separation section (2) into positive and negative ions, of which at least the ions of either sign are led into a narrow analyzer channel (4). There, due to the capillary force, they are be forced to move in the middle section of the channel, from where they are deflected by electric fields of different strength caused by different voltages (U1-U10) into an electrode located at the edge of the channel, where they cause ion current (I1-I10). On the basis of the ion currents a current spectrum is made, on the basis of which different substances are detected and their concentrations determined with the aid of corresponding spectra obtained with standard samples of different substances.
Fabretti Holdings Limited
Kirby Eades Gale Baker
Puumalainen Pertti
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