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Proceedings Paper

HME powder detection using space sampling and electrochemical sensors
Author(s): Avi Cagan; Joseph Wang; Karel Cizek; Donglai Lu; Jeffrey La Belle
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Paper 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.

Paper Details

Date Published: 8 May 2009
PDF: 10 pages
Proc. SPIE 7304, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing X, 73041E (8 May 2009); doi: 10.1117/12.820119
Show Author Affiliations
Avi Cagan, Arizona State Univ. (United States)
Joseph Wang, Univ. of California, San Diego (United States)
Karel Cizek, Univ. of California, San Diego (United States)
Donglai Lu, Arizona State Univ. (United States)
Jeffrey La Belle, Arizona State Univ. (United States)

Published in SPIE Proceedings Vol. 7304:
Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing X
Augustus W. Fountain III; Patrick J. Gardner, Editor(s)

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