General Electric Company

Kenneth Ribeiro

William Joseph McGann

Tao Deng

Yuan-Hsiang Lee

An apparatus is provided for identifying trace amounts of substances of interest in an air flow. The apparatus includes an inlet for receiving the air flow and an outlet for exhausting major portions of the air flow. The outlet is offset from the inlet. A porous impactor is disposed in alignment with the inlet and is impacted by particles entrained in the air flow. The porous impactor is heated sufficiently to vaporize particles impinging thereon. A detector communicates with the porous impactor and is operative for identifying substances of interest in the vaporized particles.

Particle sampling preconcentrator

A cargo inspection apparatus for the inspection of an analyte carried by a medium is disclosed. The apparatus includes a housing having an inlet allowing for entry of the medium and an outlet allowing for exit of the medium, and an adsorber disposed within the housing in fluid communication with the medium flow from the inlet to the outlet, the adsorber includes a substrate having disposed thereon a nanoparticle film. The nanoparticle film has nanoparticles having an average particle size of equal to or less than about 500 nanometers.

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North Reading, MA, United States of America

Kenneth Ribeiro