Inventors:
- Arlington VA, US
Robert Furstenberg - Largo MD, US
Viet K. Nguyen - Gaithersburg MD, US
Chris Kendziora - Burke VA, US
Michael Papantonakis - Washington DC, US
Todd H. Stievater - Arlington VA, US
International Classification:
G01N 30/02
G01N 30/60
G01N 21/77
G01N 21/552
G01N 21/3504
G01N 21/03
B01J 20/281
G01N 21/39
Abstract:
A chemical detector for rapid, simultaneous detection of multiple chemicals including chemical warfare agents, toxic industrial chemicals, and explosives having one or more gas chromatography columns each with a chemosorbent or a chemo-reactive stationary phase and an infrared-transparent base, a bright infrared light source, a mechanism to direct the light source to any point along any of the columns, and an infrared sensor. Another disclosed detector has one or more gas chromatography columns each on the surface of a substrate having at least one infrared-transparent waveguide pattern, a bright infrared light source, and at least one ring resonator for each column, where each ring resonator is coated with a chemosorbent or a chemo-reactive stationary phase, and where each ring resonator spectroscopically probes the stationary phase. Also disclosed are the related methods for chemical detection.