Handheld Trace Explosives Sampler

Non contact trace explosives detection has not been comparable to results obtained from wipe sampling. Many issues, including finding a method to release particles from a surface, efficient particle and vapor transport, and limited particle and vapor trap collection efficiency have all limited the process. Other related issues have included cost of ownership, ease of contamination removal, and compatibility with existing detection equipment. This Phase II proposal summarizes work performed on a Phase I SBIR program to develop solutions for these problems. The methods used in the final prototype hand sampler include aerosol ablation for particle release, a vortex attractor for particle and vapor transport, and a planar stainless steel mesh with optional coating for particle and vapor collection.