Ranges of target air pollutants concentrations measured
in the environmental test chamber are listed in
Table 5. The lower values are the background concentrations
at the beginning of the experiments. It is noted
that CH4 and NMHC concentrations do not increase
significantly due to incense combustion except Incense 3.
Most of the peak concentrations of all pollutants were
observed duringor immediately after extinguishingthe
incense, which well fitted the mass balance model used.
The 8-h average PM10, CO2, CO and NO2 levels (i.e.,
0.18mgm3, 1000 ppm, 8.75 ppm and 79 ppb, respectively)
are specified by Recommended Indoor Air Quality