Table 3.

Summary of advantages and disadvantages of MOX and CP sensors, modified from [54].

Sensor Type	Advantages	Disadvantages
Metal-Oxide Semiconductor (MOX)	Very high sensitivity Limited sensing range Rapid response and recovery times for low mol. wt. compounds	High temperature operation High power consumption Sulfur & Weak acid poisoning Limited sensor coatings Sensitive to humidity Poor precision
Conductive Polymer (CP)	Ambient temperature operation Sensitive to many VOCs Short response time Diverse sensor coatings Inexpensive Resistance to sensor poisoning	Sensitive to humidity and temperature Sensors can be overloaded by certain analytes Sensor life is limited