The air pollutants investigated in this study included: carbon monoxide (CO), sulfur oxide (SO2), nitrogen oxide (NO-NO2-NOx), volatile organic compounds (VOCs), airborne particulate matters with aerodynamic diameters less than 10 microns (PM10) and 2.5 microns (PM2.5), and Methane, Non-methane hydrocarbons (NMHC) and THC.
The incense tested was weighed using a micro-balance. The weight is 5.43 g. A detailed description of the method can be found in our previous publication