6. Air pollution

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Flashcards with key vocabulary terms and definitions from Air Quality lecture notes.

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20 Terms

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Atmosphere

Two innermost layers are Troposphere and Stratosphere

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Greenhouse Gases

H2O, CO2, CH4, N2O

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Ozone Layer

Concentrated in stratosphere, protects life from UV radiation, preserves stratospheric layer

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Outdoor Air Pollution

Industrial smog, photochemical smog, acid deposition

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Indoor Air Pollution

Smoke, coal fire, cigarette smoke

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Air Pollution

Chemicals in atmosphere harming organisms/ecosystems

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Natural Air Pollutants

Wind, dust, volcanic eruptions

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Human Air Pollutants

Factories, cars, outdoor sources

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Primary Pollutants

Chemicals released directly into the air (Sulfur Dioxide, Nitrogen Oxides, Carbon Monoxide, VOC, Particulates)

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Secondary Pollutants

Primary pollutants react with each other (Ozone)

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Sulfur Dioxide

From sea spray, volcanic fumes, fossil fuel combustion, causes acid rain

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Nitrogen Oxides

Reactive gases from heated nitrogen, contribute to smog and acid rain, cause eutrophication

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Carbon Monoxide

Colorless, odorless, toxic gas from incomplete combustion, inhibits respiration

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Volatile Organic Compounds (VOCs)

Organic chemicals from plants and human activities, contribute to photochemical oxidants

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Particulate Matter

Solid particles/liquid droplets (aerosols), reduce visibility, damage lungs, cause cancer

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Ozone (O3) - Secondary Pollutant

Shields biosphere in stratosphere, pollutant in troposphere, damages vegetation/buildings

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Industrial Smog

Mix of SO2, H2SO4, solid particles from burning coal

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Photochemical Smog

Mixture of primary/secondary pollutants under UV radiation

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Acid Deposition

Wet and dry deposition of acidic substances (H2SO4, HNO3)

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Ozone Depletion

Reduction of ozone levels in stratosphere, increases UV radiation