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Techniques for quantifying chemicals concealed behind clothing using near infrared spectroscopy

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Saleem, Aamer, Canal, Céline M., Hutchins, David A., Davis, Lee A. J. and Green, Roger (2011) Techniques for quantifying chemicals concealed behind clothing using near infrared spectroscopy. Analytical Methods, Vol.3 (No.10). pp. 2298-2306. doi:10.1039/c1ay05301a ISSN 1759-9660.

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Official URL: http://dx.doi.org/10.1039/c1ay05301a

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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 and Medicine > Engineering > Engineering
Journal or Publication Title: Analytical Methods
Publisher: Royal Society of Chemistry
ISSN: 1759-9660
Official Date: 2011
Dates:
DateEvent
2011Published
Volume: Vol.3
Number: No.10
Page Range: pp. 2298-2306
DOI: 10.1039/c1ay05301a
Status: Peer Reviewed
Publication Status: Published

Data sourced from Thomson Reuters' Web of Knowledge

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