Explosives and landmine detection using an artificial olfactory system

@inproceedings{White2004ExplosivesAL,
  title={Explosives and landmine detection using an artificial olfactory system},
  author={Joel White and L. Paul Waggoner and John S. Kauer},
  booktitle={SPIE Defense + Commercial Sensing},
  year={2004}
}
We are developing a portable, artificial olfactory system based on multiple attributes of the sense of smell to identify air-borne odors, including those associated with buried landmines. Brief (1-2 sec) air samples are drawn over an array of optically-interrogated, cross-reactive chemical sensors. These consist of polymers with high sensitivity and relatively narrow specificity for nitroaromatics (Timothy Swager, MIT), as well as those with broader responses, thus permitting… CONTINUE READING

Results and Topics from this paper.

Key Quantitative Results

  • In discrimination tests, after training to one concentration of 6 odors, the device gave 95% correct identification when tested at the original plus three different concentrations.
  • In sensitivity tests, the device showed 100% detection and no false alarms for the landmine-related compound DNT at concentrations as low as 500 pp-trillion (quantified by GC/MS) - 10 times lower than average canine behavioral thresholds.
  • In a limited 9 site "blind" test, PMA1A detection was 100% with false alarms of 40%.
  • Adding two Nile Red sensors to the target template enabled the EVID to detect, and discriminate from methanol serving as an interferent, 2,4-DNT at 17 and 6 ppb with 100% probability of detection and no false alarms, as shown in the ROC curve in Fig.

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