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Reports from Valencia Polytechnic University Advance Knowledge in Chemical Sensors and Actuators (An electronic nose for the detection of Sarin,...

September 9, 2014



Reports from Valencia Polytechnic University Advance Knowledge in Chemical Sensors and Actuators (An electronic nose for the detection of Sarin, Soman and Tabun mimics and interfering agents)

By a News Reporter-Staff News Editor at Journal of Technology -- Data detailed on Chemical Sensors and Actuators have been presented. According to news originating from Valencia, Spain, by VerticalNews correspondents, research stated, "An electronic nose system (E-nose) with metal oxide semiconductor sensors (MOS) has been designed to discriminate and quantify different chemical warfare agents (CWA) mimics. The E-nose consists of an array of commercial MOS for different gases, two sensors for temperature sensing, a sample handling system, a data acquisition system and a laptop with the data acquisition system control."

Our news journalists obtained a quote from the research from Valencia Polytechnic University, "With this device, discrimination studies have been carried out to detect specific CWA simulants (diethyl chlorophosphonate (DCP), diethyl cyanophosphate (DCNP), diisipropyl fluoride (DFP)), their derivatives (diethyl 1-phenylethyl phosphonate (OP-1), diethyl (2- cyanoethyl)phosphonate (OP-2), dimethyl methyl phosphonate (OP-3) and diethyl (2-oxopropyl)phosphonate (OP-4)) and some potential interfering substances (sulfuric acid, ammonia, ethanol and acetone). Principal components analyses (PCA) show that it is possible to discriminate the studied organophosphorous CWA mimics (DCP, DCNP and DFP) from the other studied derivatives and potential interfering agents. In addition, DCNP quantification studies have been done by using partial least squares (PLS) and a mathematical model has been obtained to predict DCNP concentrations in air. In this model, the coefficient of determination (R-2) is 0.9567, the root mean square error of prediction (RMSEP) is 30 and the limit of detection (LOD) is 5 ppm so the model is considered valid."

According to the news editors, the research concluded: "These results suggest that this E-nose system is capable to discriminate and quantify CWA mimics and it would be a feasible system to be used in a real scenario."

For more information on this research see: An electronic nose for the detection of Sarin, Soman and Tabun mimics and interfering agents. Sensors and Actuators B-Chemical, 2014;202():31-37. Sensors and Actuators B-Chemical can be contacted at: Elsevier Science Sa, PO Box 564, 1001 Lausanne, Switzerland.

The news correspondents report that additional information may be obtained from C. Olguin, Valencia Polytechnic University, Dept. of Elect, E-46022 Valencia, Spain. Additional authors for this research include N. Laguarda-Miro, L. Pascual, E. Garcia-Breijo, R. Martinez-Manez and J. Soto.

Keywords for this news article include: Valencia, Spain, Europe, Chemical Sensors and Actuators

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Journal of Technology


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