Novel SAW CWA Detector Using Temperature Programmed Desorption
作者： Fahim , Mainuddin , Upendra Mittal , Jitender Kumar , A. T. Nimal
DOI: 10.1109/JSEN.2020.3042766
关键词: Thermal desorption spectroscopy 、 Selectivity 、 Adsorption 、 Sulfide 、 Vapours 、 Materials science 、 Surface acoustic wave 、 Desorption 、 Temperature measurement 、 Analytical chemistry
摘要: In this article a temperature programmed desorption (TPD) on an uncoated surface acoustic wave (SAW) device has been explored for selectivity studies of chemical warfare agents (CWA). High sensitivity to mass change SAW was exploited study patterns in novel way. CWA Simulants 2-chloroethyl ethyl sulfide (CEES), Methyl Salicylate (MS) and Dimethyl phosphonate (DMMP) were investigated at different concentrations. cooled exposed simulant vapours resulting physical adsorption gas molecules subsequently by ramp heating the device, desorbed. The oscillation frequency, due desorption, monitored during ramping spectrum obtained. Desorption spectra statistically analyzed using Principal Component Analysis (PCA) our results indicate that all three compounds produced distinct independent Through work we aim develop reliable methodology subsequent development hand held TDP-SAW detector field applications.
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