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Flashcards with key vocabulary terms and definitions from Air Quality lecture notes.
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Atmosphere
Two innermost layers are Troposphere and Stratosphere
Greenhouse Gases
H2O, CO2, CH4, N2O
Ozone Layer
Concentrated in stratosphere, protects life from UV radiation, preserves stratospheric layer
Outdoor Air Pollution
Industrial smog, photochemical smog, acid deposition
Indoor Air Pollution
Smoke, coal fire, cigarette smoke
Air Pollution
Chemicals in atmosphere harming organisms/ecosystems
Natural Air Pollutants
Wind, dust, volcanic eruptions
Human Air Pollutants
Factories, cars, outdoor sources
Primary Pollutants
Chemicals released directly into the air (Sulfur Dioxide, Nitrogen Oxides, Carbon Monoxide, VOC, Particulates)
Secondary Pollutants
Primary pollutants react with each other (Ozone)
Sulfur Dioxide
From sea spray, volcanic fumes, fossil fuel combustion, causes acid rain
Nitrogen Oxides
Reactive gases from heated nitrogen, contribute to smog and acid rain, cause eutrophication
Carbon Monoxide
Colorless, odorless, toxic gas from incomplete combustion, inhibits respiration
Volatile Organic Compounds (VOCs)
Organic chemicals from plants and human activities, contribute to photochemical oxidants
Particulate Matter
Solid particles/liquid droplets (aerosols), reduce visibility, damage lungs, cause cancer
Ozone (O3) - Secondary Pollutant
Shields biosphere in stratosphere, pollutant in troposphere, damages vegetation/buildings
Industrial Smog
Mix of SO2, H2SO4, solid particles from burning coal
Photochemical Smog
Mixture of primary/secondary pollutants under UV radiation
Acid Deposition
Wet and dry deposition of acidic substances (H2SO4, HNO3)
Ozone Depletion
Reduction of ozone levels in stratosphere, increases UV radiation