MULTIPARAMETRIC RECOGNITION OF ORGANIC VAPORS BY USING A GAS SENSOR BASED ON A NANOSTRUCTURED TIN DIOXIDE FILM

MULTIPARAMETRIC RECOGNITION OF ORGANIC VAPORS BY USING A GAS SENSOR BASED ON A NANOSTRUCTURED TIN DIOXIDE FILM

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The influence of organic vapors (isopropanol, ethanol, and acetone) with different concentrations in air on a response gas sensor based on nanostructured tin dioxide films synthesized by the sol-gel method was studied.It was found experimentally that inject of the gas mixtures containing organic vapors into measure chamber results opheliasmuse.com to an increase of the conductivity of nanostructured tin dioxide films.In the area of high concentrations (more than 50% of saturated vapor), the concentration dependence of conductivity trends to saturation.The recognizing possibility of species gas admixture by using statistical processing of response only single sensor at different analyzed gas mixture concentrations is validated.The surface donor level of gas-reducing relative to acceptor level oxygen and desorption heat of gas particle were determined.

A new method based multiparametric recognition gas mixtures is proposed based on using concentration-independent physical and chemical parameters of analyzed gases as classification properties.It is shown that proposed multiparametric recognition method has higher reliability in comparison iphone 13 price ohio with standard methods based on the analysis gas sensor response.