METHOD FOR INCREASING CONCENTRATION OF IMPURITIES SEPARATED FROM GAS MIXTURE Russian patent published in 2014 - IPC G01N30/08 

FIELD: instrument making.

SUBSTANCE: method for increasing concentration of impurities separated from gas mixture can have a wide range of application, and namely in those cases when pulse and dynamic-in-time increase of concentration of the selected substance is required, which is enough for making measurements. The proposed method can be used for analysis of the air breathed by patients for purposes of diagnostics of latent diseases at initial stage. Besides, the above method, when combined with a mass spectrometer or any other analytical instrument, a sensor or a detector, can be used for creation of selective and extremely sensitive analysers in order to determine noxious or explosive substances in air, for detection of drugs, for determination of mercury vapours, methane traces, low concentrations of dioxine, etc., which are present in atmosphere. The method contains a reserve capacity with structural elements located inside it. Gas with impurity that is adsorbed on the reserve capacity surface and on surfaces of structural elements inside it is pumped through the reserve capacity. In order to increase peak concentration of desorbed impurities and reduction of their losses, desorption of accumulated impurities is performed as a result of irradiation of inner surface of the reserve capacity and surfaces of structural elements located inside the reserve capacity and contacting the gas mixture.

EFFECT: abrupt increase of concentration of adsorbed substance by increasing the amount of accumulated substance on maximum large surface with its further desorption to volume of minimum dimensions.

2 dwg