Saleem, Aamer, Canal, Céline M., Hutchins, David A., Davis, Lee A J. and Green, Roger J.. (2011) Techniques for quantifying chemicals concealed behind clothing using near infrared spectroscopy. Analytical Methods, Vol.3 (No.10). pp. 2298-2306. ISSN 1759-9660

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Abstract

The detection of specific chemicals when concealed behind a layer of clothing is reported using near infrared (NIR) spectroscopy. It is found that concealment modifies the spectrum of a particular chemical when recorded at stand-off ranges of three meters in a diffuse reflection experiment. Chemometric analysis of the spectra has been performed with neural network-based pattern recognition/classification to deal with this problem. Neural networks help to overcome nonlinearities within the calibration/training dataset, affording more robust modelling. The work has been shown to both allow detection of specific chemicals concealed behind a single intervening layer of fabric material, and to estimate the concentration of hydrogen peroxide using partial least squares regression (PLSR).

Item Type:	Journal Article
Divisions:	Faculty of Science > Engineering
Journal or Publication Title:	Analytical Methods
Publisher:	Royal Society of Chemistry
ISSN:	1759-9660
Date:	2011
Volume:	Vol.3
Number:	No.10
Page Range:	pp. 2298-2306
Identification Number:	10.1039/c1ay05301a
Status:	Peer Reviewed
Publication Status:	Published
URI:	http://wrap.warwick.ac.uk/id/eprint/41985

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