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Remote identification of chemicals concealed behind clothing using near infrared spectroscopy

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Canal, Céline M., Saleem, Aamer, Green, Roger, 1951- and Hutchins, David A.. (2011) Remote identification of chemicals concealed behind clothing using near infrared spectroscopy. Analytical Methods, Volume 3 (Number 1). pp. 84-91. ISSN 1759-9660

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Abstract

Measurements are presented which demonstrate that near infrared (NIR) spectroscopy can be used to identify chemicals concealed behind clothing. This has been achieved for detector stand-off distances of 3 m. The optical properties of a range of clothing materials have been investigated, and the transmission of NIR signals found to be sufficient for spectroscopy. The study has shown that granular solid materials can be identified when hidden behind a layer of clothing. Examples of chemicals used in this study include ammonium nitrate and other ammonium salts. Details of the current measurements and results are given, together with suggestions for increasing detection sensitivity.

Item Type: Journal Article
Subjects: Q Science > QD Chemistry
T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Science > Engineering
Library of Congress Subject Headings (LCSH): Infrared detectors, Near infrared spectroscopy, Explosives -- Detection, Security systems, Raman spectroscopy
Journal or Publication Title: Analytical Methods
Publisher: Royal Society of Chemistry
ISSN: 1759-9660
Official Date: January 2011
Volume: Volume 3
Number: Number 1
Page Range: pp. 84-91
Identification Number: 10.1039/c0ay00386g
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Funder: Great Britain. Home Office. Scientific Development Branch (HOSDB)
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URI: http://wrap.warwick.ac.uk/id/eprint/41648

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