Table 1.

Acetone detection in dry air by chemo-resistive gas sensors.

Material	Process	Sensor response (-) to acetone [ppm]	LOD (ppm)	Temperature (°C)	Ref.
Fe2O3/Pt	Wet-method	4.2 [10]	10	300	[42]
Fe2O3/RuO2	Wet-method	1.5 [10]	10	300	[42]
SnO2	Dip-coating	2 [3]	2	RT	[43]
TiO2	Drop-coating	4 [1]	1	500	[23]
SnO2-ZnO	Wet-method	2.3 [200]	200	300	[44]
Cr-WO3	Drop-coating	1 [0.5]	0.2	400	[25]
Ce-SnO2	Dip-coating	75 [100]	100	210	[45]
Si-WO3	FSP	4.1 [0.5]	0.02	400	[26]
ZnO	RF-SPU	0.2 [60]	15	400	[46]

Sensor response: R_air/R_analyte − 1; LOD: Limit of detection