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Explosives GC System - SRI Instruments
Explosives GC System
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Can be run gasless in the field!
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TID detector
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15-meter capillary column
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Temperature
programmable column
oven
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Built-in, "whisper quiet"
air compressor
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1 channel PeakSimple
data system
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Heated flash vaporization
injector
...on the ultracompact
or compact
chassis
The Explosives GC system from SRI combines a
, a
, and a
for detection of nitroaromatic explosives such as TNT, and
nitramine explosives such as RDX (C
4
) and HMX.
If only nitroaromatics are required, the GC will operate on the built-in air compressor alone, using its air for both carrier
and make-up gas. This GC is especially convenient for field monitoring, and screening of explosives-contaminated soil
and water, as might be found in military bases or practice ranges.
Unlike immunoassay or colorimetric detection methods which cannot discriminate the biodegraded transformation
byproducts of TNT (2-amino-4, 6-dinotrotoluene, etc.), and which may not function well in the presence of high levels
of interferences from other explosive compounds, the Explosives GC can separate and detect all the
nitroaromatic compounds, even in the presence of interferences that would compromise other measurement techniques.
For TNT and some other nitroaromatics, detection limits of 1ppb are routine. When nitroamines must also be
detected, nitrogen is used for the carrier gas, and air is used for the TID makeup gas. Nitramine compounds like RDX
exhibit lower response by a factor of 50.
This chromatogram shows the
separation of a 10ppm explosives mix
using an Explosives GC.