Table 2.

The information on ten electronic nose sensors.

Sensor Name	Representative Substance Type	Description
W1C	Aromatic	Sensitive to aromatic compounds
W5S	Broad range	Sensitive to nitrogen oxides
W3C	Aromatic	Sensitive to aroma, aromatic compounds
W6S	Hydrogen	Sensitive to hydrides
W5C	Arom-aliph	Sensitive to short-chain alkane aromatic compounds
W1S	Broad-methane	Sensitive to methyl
W1W	Sulphur-organic	Sensitive to sulphides
W2S	Broad-alcohol	Sensitive to alcohol, aldehydes and ketones
W2W	Sulph-chlor	Sensitive to organic sulphides
W3S	Methane-aliph	Sensitive to long-chain alkanes