the heat released from the burning tip of the incense, the
temperature of the burning tip decreases, so the rate at
which incense is burned in an environment with high relative
humidity is lower than that for an environment with low
relative humidity.
However, the mass emission factors of the total particulates
generated by burning incense at 21.3, 51.0 and 90.5%
relative humidity were 18.18 ± 0.70 (n = 3), 17.48 ± 0.1 (n
= 3) and 16.54 ± 0.23 (n = 3) mg/g, respectively (Fig. 2).
The particulate mass emission factors differ significantly with
relative humidity (F-Test, P = 0.01). This result demonstrates
that the total particulate mass emission factors generated
from burning incense substantially decrease when the relative
humidity is increased.