Miniaturized explosives preconcentrators for use in man-portable explosives detection systems

This paper describes the function and testing of miniaturized chemical concentrating devices that are designed to enhance the capabilities of portable trace explosive detection systems, such as those based on ion mobility spectrometry (IMS). These preconcentrators are based upon a patented design first developed for use in personnel portals, in which explosive vapor and/or residue is adsorbed onto a high density metal screen, and subsequently desorbed into the detector.