Cross-Sensitivity of Solid Electrolyte-Based Gas Sensors and Limitations

7 Cross-Sensitivity of Solid Electrolyte-Based Gas Sensors and Limitations 

Experimental studies have also shown that selective detection is an important advantage of an electrochemical sensor, but sometimes their responses are affected by the presence of other gases (Park et al. 2003). As established in numerous experiments, cross-sensitivity is often observed when lype II or Type III potentiometric sensors are exposed to gas species that form thermodynamically more stable compounds or kinetically more favorable compounds in spite of lower thermodynamic stability (Weppner 1992). 

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