Measuring and testing – Gas analysis – Solid content of gas
Patent
1993-06-01
1995-06-20
Noland, Thomas P.
Measuring and testing
Gas analysis
Solid content of gas
73 2806, G01N 2514
Patent
active
054252636
ABSTRACT:
There is provided an assembly for preferentially separating and collecting particles that are gathered from the surface of an article such as an item of baggage. The assembly features an impactor and a suction anvil that is displaceable from a collection medium. The anvil is displaceable from the collection medium so that the medium may be removed and analyzed for traces of substances such as explosives or narcotics. There is also provided, in combination with the assembly, a vacuum head and conduit for gathering the particles and a suction unit for creating the suction force. The collection medium containing collected particles is moved from the impactor to an analyzer by a stage movement device. The analyzer includes an analysis unit, such as an Ion Mobility Spectrometer, and a displaceable heater anvil.
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Davies John H.
Kuja Frank J.
Barringer Research Limited
Noland Thomas P.
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