Table 1.

Selective target gases for all chemoresistive sensors used in GeNose C19. Cross-sensitivity toward different gases has been a typical characteristic for such inorganic MOS gas sensors. In terms of selectivity, each sensor sensitively reacts to more than two target gases.

Gas sensor	Selective target gases
S1	Carbon monoxide, ethanol, hydrogen, isobutane, and methane
S2	Ammonia, ethanol, hydrogen, hydrogen sulfide, and toluene
S3	Ethanol, hydrogen, isobutane, and methane
S4	Carbon monoxide, ethanol, hydrogen, isobutane, and methane
S5	Carbon monoxide, ethanol, hydrogen, isobutane, methane, and propane
S6	Carbon monoxide, ethanol, hydrogen, isobutane, methane, and propane
S7	Carbon monoxide, ethanol, hydrogen, and methane
S8	Acetone, benzene, carbon monoxide, ethanol, isobutane, methane, and n-hexane
S9	Ammonia, ethanol, hydrogen, and isobutane
S10	Chlorofluorocarbons, ethanol, and hydrofluorocarbons