SYSTEM FOR REMOTE COLLECTION AND ANALYSIS OF AIR SAMPLES Russian patent published in 2012 - IPC G01N27/62 

FIELD: chemistry.

SUBSTANCE: system for remote collection and analysis of air samples has an apparatus for blowing air streams, having an agitator for the discharged air stream and apparatus for sucking the incoming air stream, fitted with an agitator for the sucked air stream. The suction apparatus is in form of a suction duct whose output is connected to the incoming air stream agitator, and its input lies inside the apparatus for blowing air streams and is placed coaxially with said apparatus, and the blowing apparatus is fitted with an air stream swirler and a duct for transporting the discharged air stream from the agitator to the swirler. The swirler is made in form of a reflector and a fixed impeller mounted on its base and coaxially with it, which forms with the suction duct an annular cavity which is the outlet of the duct carrying the discharged air stream. The agitator for the sucked air stream used is a reversible air pump, and between the agitator for the sucked air stream and the suction duct there is an air sample analyser, having at least a surface-ionisation source of ions of organic compounds, connected by the inlet and outlet of the gas ducts, respectively, with the suction duct and the agitator for the sucked air stream. On the side of the swirler which is opposite the air sample analyser, there is a housing in form of a tube with a constant or variable cross-section, one side of which is adjacent on the perimetre to the swirler and having on the side surface at least two symmetrically lying holes. Also, on the second side of the housing, there is an air stream concentrator and a flat ventilator for intake of air samples arranged in series adjacent to the perimetre. Between the air stream concentrator and the swirler, there is a sample carrier made from metallic material, for example, in form of a spiral made from metal wire. The air stream concentrator is in form of a gas-impermeable membrane, which bulges towards the swirler and has a centre hole, and electrical leads from the sample carrier are connected to a controlled power supply.

EFFECT: possibility of further determining the activation energy of desorption of orgnaic compounds from the surface of the sample carrier in continuous monitoring mode.

3 cl, 1 dwg