. 2022 Jan 22;22(3):836. doi: 10.3390/s22030836

Table 2.

The detection range of concentration compared with other works.

Method	TARGET GAS	The Range of Concentration	Reference
NDIR	CO₂	0–4.8%	[20]
	CO	0–4.45%
	CH₄	0–5%
NDIR	CO, CO₂, CH₄, H₂CO, NH₃, NO	0–4%	[24]
NDIR	CO, CO₂, CH₄	0–0.25%	[22]
NDIR	CO₂	0–20%	This work
	CO	0–14%
	C₃H₈	0–0.5%