CHEMICAL SAMPLING AND DETECTION METHODS AND APPARATUS

摘要

This invention describes a sample collection and desorption device and method that collects residues of explosives and other chemicals from a surface and then introduces them into a detector. The desorption method and device include introducing additional chemicals while heating up the sample collector, thus, the collected sample may be converted via a chemical reaction or a catalytic process. The detector can be an ion mobility spectrometer or mass spectrometer.

主权项

1. A chemical desorption method comprising
(a) collecting a sample of interest on a collector and/or preconcentrator; (b) heating the collector and/or preconcentrator to evaporate the sample in a desorber; (c) analyzing the sample with a detector and (d) adding at least one additional substance to the desorber during the desorption process.