Performance evaluation of an SnO/sub 2/-based sensor array for the concentration determination of H/sub 2/S/CO/sub 2/ mixtures in dry or wet air

The use of the "electronic noses" has been increasing over the last few years, for use in agroalimentary or environmental applications, for example. We present an application for the detection and the quantification of H/sub 2/S in the presence of interfering moisture and CO/sub 2/. The characterization of the sensor array allows us to highlight a "peak", which is a characteristic of the concentration of H/sub 2/S, in the time response of all the sensors, whatever the humidity rate and whether CO/sub 2/ is present or not.