Quartz Enhanced Photoacoustic Spectroscopy for Detection of Improvised Explosive Devices and Precursors

Table 1

IED’s precursors tested with the QEPAS sensor.

Common name	State	Vapour pressure; (mmHg@20°C)
Acetone	Liquid	184
Hydrogen peroxide	Liquid	2
Nitric acid	Liquid	48
Hexamine	Solid	<0.01
DNT	Solid	<0.001
Nitromethane	Liquid	28