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Discrimination and classification of chemical warfare agent simulants using a Love-wave sensor array

D. Matatagui, M.J. Fernández, J.L. Fontecha, J.P. Santos, I.Gràcia, C. Cané, M.C. Horrillo
Procedia Engineering Volume 25, 2011, Pages 23–26
http://dx.doi.org/10.1016/j.proeng.2011.12.006

An array made up of Love-wave sensors has been developed as a detection system for chemical warfare agents (CWAs). This array has been tested with well-known CWA simulants detecting very low concentrations, such as 40 ppb of DMMP, a simulant of sarin nerve gas, 250 ppb of DPGME, a simulant of nitrogen mustard and 15 ppm of DMA, a simulant of distilled mustard. Additionally, principal component analysis (PCA) as a data pre-processing and discrimination technique, and probabilistic neural networks (PNN) as a patterns classification technique, have been applied, obtaining good results concerning to discrimination and sensitivity.

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