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Proceedings Article

HME powder detection using space sampling and electrochemical sensors

[+] Author Affiliations
Avi Cagan, Donglai Lu, Jeffrey La Belle

Arizona State Univ. (USA)

Joseph Wang, Karel Cizek

Univ. of California, San Diego (USA)

Proc. SPIE 7304, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing X, 73041E (May 08, 2009); doi:10.1117/12.820119
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From Conference Volume 7304

  • Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing X
  • Augustus W. Fountain III; Patrick J. Gardner
  • Orlando, Florida, USA | April 13, 2009

abstract

A new concept for effective sampling and detecting HME powder traces is described. The collection is based on the particles mobility under rotation into an accumulation collector unit, followed by sequential transfer to the electrochemical detection system where surface washing yields a higher concentration at room temperature. The electrochemical detection of the peroxide explosives is based on photochemical degradation or acid treatment resulting in hydrogen peroxide which is sensed by a Prussian-blue (PB) modified strip electrode at a low potential. Nitrates such as Urea Nitrate are detected using unique reactions which generate one product which has a specific electrochemical signature. Nitroaromatics, nitramines and nitroesters are detected. The new "Add and Detect" procedure is operator independent and is the safest as the operator.

© (2009) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Avi Cagan ; Joseph Wang ; Karel Cizek ; Donglai Lu and Jeffrey La Belle
"HME powder detection using space sampling and electrochemical sensors", Proc. SPIE 7304, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing X, 73041E (May 08, 2009); doi:10.1117/12.820119; http://dx.doi.org/10.1117/12.820119


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