| 摘要 |
A method for detecting energetic materials, particularly explosives material s, in samples involves heating a mixture of a sample under a reduced pressure of not more than 100 mbar and detecting the chemiluminescent emission therefrom with a suitable light detector, for example a photomultiplier or photodiode. The sample is heated to a temperatu re in the region of from 300 .degree.C to 500 .degree.C. The mixture is conveniently heated in a quartz tube fumace placed within a vacuum chamber a nd the inlet to the tube furnace may be connected directly into the outlet from a gas chromatography apparatus such that individual compound s from a mixture may be detected as they pass sequentially through the chromatography apparatus and into the tube furnace. Where a carrier gas is used this may be an inert gas such as nitrogen, argon or helium or a specific gas to enhance the responsiveness of the metho d for a particular sample material. Apparatus for carrying out the method is also provided. |
