| Sensor no. | Sensor name | Sensitive components | Reference, mL·m−3(ppm) |
| 1 | W1C | Aromatic compounds | Toluene, 10 | 2 | W5C | Broad-range sensitivity, reacts with nitrogen oxides, very sensitive with negative signal | NO2, 1 | 3 | W3C | Ammonia, used as a sensor for aromatic compounds | Benzene, 10 | 4 | W6S | Mainly hydrogen, selectively (breath gases) | H2, 100 | 5 | W5S | Alkenes, aromatic compounds, less polar compounds | Propane, 1 | 6 | W1S | Sensitive to methane, broad range similar to no.8 | CH4, 100 | 7 | W1W | Reacts with sulfur compounds, sensitive to many terpenes and sulfur organic compounds, which are important for smell, limonene, and pyridine | H2S, 1 | 8 | W2S | Detects alcohols, partially aromatic compounds, broad range | CO, 100 | 9 | W2W | Aromatic compounds, sulfur organic compounds | H2S, 1 | 10 | W3S | Reacts at high concentrations, sometime very selective (methane) | CH4, 10 |
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