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TEA Model 510 Nitrogen Analyzer
The model 510 Analyzer provides, fast, accurate,
analysis and detection of thermally
labile nitro compounds found in explosives
Explosives Analysis Comes of Age
Superiority of Analysis
specifi c instrument for the detection and quantitation of thermally labile
and explosives. It is a fast, sensitive,
analysis - including HPLC analysis using
such conventional detectors as UV or RI.
High Specifi city
of all components in the mixture. This is frequently diffi cult because of the
With its high specifi city for the nitrosyl
presence of stabilizers and plasticizers
levels of explosives may be found - such as in wastewater or post blast residues
Post-blast debris analyses
- identifi es
presence of plasticizers, stabilizers, and
- monitors quality of
operations or found in body fl uids - can
Thus, the TEA analyzer provides an ideal approach to explosives analysis.
detection even in the presence of stabilizers or plasticizers
1) HPLC-TEA Explosives Analysis
20µl injection of a 5 µg/ml solution of a
2) HPLC-TEA Anti-Anginal
20µl injection of a 10 µg/ml solution.
3A and 3B) GC - TEA Selectivity:
GC-TEA Selectivity: Nitrosamine/Nitro Compound Analysis
pyrolyzer. Since nitrosamines cleave in the 350-550˚C temperature range, it is
the amount of nitrosamines. However, only
N-nitroso compounds are detected
when the pyrolyzer temperature is set at 500˚C (3A). When the pyrolyzer
nitro compounds are easily detectable (3B).
4) HPLC-TEA Dynamite Analysis
Sample Mixture of a 60% Giant gelatine dynamite. 20µl injection of a 5 µg/ml
5) HPLC Analysis of Letter Bomb
20µl injection of a 3µg/ml solution of a
Principle of Operation
Model TEA 510 Analyzer
ruptures compounds containing nitro groups to release the NO•
Compounds analyzed include, (but are not limited to) the following:
Tetryl - N-methyl-N-2,4,6-tetranitroaniline
and fragmentation products are removed by a cold trap. The nitrosyl radicals continue on into
The TEA Model 510 Analyzer may be used:
an evacuated reaction chamber where they are oxidized with ozone
By itself, accepting direct injection of samples
In combination with high-performance liquid chromatography
giving off a burst of infrared light. The intensity of the infrared is
The system’s high selectivity arises from its null response to many com-
pounds which usually interfere with explosives analysis. In the GC and LC modes,
compounds are further distinguished by their retention times. The selectivity ratio
for EGDN to alcohols, aromatics, plasticizers, and stabilizers is greater than 107 to 1.
Twelve attenuation ranges (1, 2, 4 . . . 1024, 2048)
Limited by the precision of the chromatographic system used.
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