Selective Determination of Hydrogen Sulfide Using SnO2-Ag Sensor Working in Non-Stationary Temperature Regime

The application of a non-stationary regime of temperature modulation in metal oxide semiconductor sensor based on SnO2-Ag leads not only to a strongly increased sensor response, but also to a considerably improved sensor selectivity toward hydrogen sulfide. Selectivity with respect to other reducing gases (CO, NH3, H-2) is about five orders of magnitude, enabling a correct selective determination of H2S in the presence of interfering gas components.

Automated summary

By applying a non-stationary regime of temperature modulation in a metal oxide semiconductor sensor based on SnO2-Ag, there is a significant increase in sensor response and an improved selectivity towards hydrogen sulfide. The selectivity towards other reducing gases (CO, NH3, H-2) is about five orders of magnitude, allowing for a correct and selective determination of H2S in the presence of interfering gas components.