Air pollution (particulate matter) maps of Northern Thailand with an adapted scale expressed as cigarette equivalent (1 cigarette = 66 g/m3) and the corresponding AQI-tobacco equivalent scale for Chiang Mai
doi: 10.1016/bs.ctdb.2022.04.005 40 HochwagenA
Its a complex aerosol containing three distinct categories of pollutants: Large Particles (PM10): The visible smoke you seeash particles and tar droplets Fine & Ultrafine Particles (PM2.5 and PM1): Microscopic combustion byproducts that penetrate deep into lungs Gaseous Pollutants & VOCs: Over 7,000 chemical compounds, including formaldehyde, benzene, ammonia, and nitrogen oxides Heres the critical insight that changed how I evaluate purifiers: A unit with a high CADR and excellent HEPA filter will rapidly remove categories 1 and 2
Note that this is not exact science, these are averages
The use of butane also led to the creation of the piezoelectric spark, replacing ferrocerium
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