Formation And Sources, Dis...: Air Quality Control:

Sources are generally divided into human-made (anthropogenic) and natural categories: :

: Dispersed activities such as agricultural fertilizer use (releasing ammonia) and the use of household products (VOCs). Natural Sources : These include volcanic eruptions ( SO2cap S cap O sub 2 and ash), wildfires (smoke and PMcap P cap M ), and biological decay ( CH4cap C cap H sub 4 3. Dispersion Factors Air Quality Control: Formation and Sources, Dis...

: Internal combustion engines in cars, trucks, and airplanes are responsible for up to 80% of urban pollution, emitting COcap C cap O NOxcap N cap O sub x PMcap P cap M It is determined by several critical environmental factors:

) react with Volatile Organic Compounds (VOCs) in the presence of heat and UV radiation. 2. Major Sources of Pollution Air Quality Control: Formation and Sources, Dis...

: These are emitted directly from an identifiable source. Examples include Carbon Monoxide (CO) from vehicle exhaust, Sulfur Dioxide ( SO2cap S cap O sub 2

Dispersion refers to how pollutants spread and dilute in the atmosphere. It is determined by several critical environmental factors: Air Pollution and Your Health