Abstract
Samples of 91 commercially available adhesives were analyzed by pyrolysis-capillary column gas chromatography-mass spectrometry (Py-GC 2-MS). Using the data system, a single, composite spectrum was generated representing over 1500 spectra from each pyrogram. The ions and relative ion abundances in the composite spectra reflect all of the components and their relative concentrations from each pyrogram. The 91 composite spectra were entered into an adhesives library on the data system. Five improvised explosive devices were constructed using 24 adhesives from the library collection. Following detonation, unconsumed bits of 13 different adhesives were recovered from the post-blast debris and identified by their association with specific fragments of the devices. When the composite spectra from the Py-GC 2-MS analysis of the recovered adhesives were searched against the library, the correct match was among the first 5 computer choices in all cases, and was the first choice in 7 of the 13 samples.
Published Version
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