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4/4 - Air Pollution
Terms in this set (16)
What are pollutants?
Gases, liquids and solids in air that can adversely affect plant and/or animal life
What are primary pollutants?
Natural or anthropogenic pollutants
What are secondary pollutants?
Chemical reaction of atmospheric gases with natural or anthropogenic pollutants
What are the six major pollutants?
Particulates, carbon, oxides, sulfur dioxides, nitrogen oxides, volatile organic compounds, ozone4
What are particulates (aerosols) and what size will cause lung cancer?
Particulates are solid or liquid matter suspended in air, 0.1 to 100 micrometers in size. PM <2.5 will cause lung cancer.
What is a carbon monoxide and where do they come from?
Carbon monoxide (CO is a colorless and odorless gas from volcanic eruptions, forest fires, and other processes. It is extremely toxic.
Where do sulfur dioxide come from?
Respiratory irritant, contributes to acid fog. 2/3 comes from electric utilities, others are iindustrial/commercial facilities
Where do sulfur dioxide occur the most?
Northern United States
What is a nitric oxide?
Nontoxic, colorless and odorless gas.
What is nitrogen dioxide (NO2)?
It is a toxicc, yellow to reddish brown gas that is pungent and ocrrosive. 50% comes from trnasportation, others come from electric utilities and industrial/commercial/residential sources.
What is does ozone cause and what does it form with formaldehyde and other gases?
Respiratory and heart problems. Combine with solar radiation to form Los Angeles-type photochemical smog.
What is another name for Volatile Organic compounds and where do they come from?
They are also called hydrocarbons. They mostly come from industrial processes and transportation.
What is the relationship with air pollution and wind speed?
As air pollution increases, wind speed, decreases.
What is the relationship with air pollution and atmospheric stability?
If unstable, a lot of thunderstorms happen in atmosphere, diluting the pollution. If stable, pollution won't be dispersed, high concentration in source.
If air atmosphere is stable and ground atmosphere is unstable, what is it called?
Inversion can trap pollutants near the Earth's surface. Upper level inversion is most dangerous.
What is the global effect of air pollution?
Anything released by human beings will be transported globally by atmospheric circulations and ocean circulations.
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