Table 1.

Average concentration of PM_2.5 and select gaseous pollutants in exposure chamber.

Contaminants	Unit	Mean ± m	Range
CO	mg/m3	28.78 ± 5.34	3.90–61.41
PM2.5	mg/m3	1.97 ± 0.55	0.48–4.77
Furfural	mg/m3	0.19 ± 0.06	0.06–0.87
Formaldehyde	mg/m3	0.024 ± 0.006	0.005–0.101
Acetaldehyde	mg/m3	0.65 ± 0.11	0.07–0.78