C: Atmospheric Pollution

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19 Terms

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Primary Pollutants

Emitted directly into the air

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Secondary Pollutants

Result from primary air pollutants reacting together and forming new pollutants

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Point source air pollution

It occurs when the contaminant comes from an obvious source

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Non-point source air pollution

It occurs when the contaminant comes from a source that is not easily identifiable or from a number of sources spread over a large, widespread area

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Criteria air pollutants

These are a set of eight air pollutants that cause smog, acid rain, and other health hazards and are typically emitted from many sources in the industry, mining, transportation, power generation, and agriculture

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Industrial smog

Trends to be sulfur-based and is also called gray smog

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Carbon monoxide (CO2)

It is a colorless, odorless, and tasteless gas that is slightly less dense than air, common from most combustion (esp vehicle exhaust), dangerous to human health

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Lead (Pb)

Greyish material that accumulates in tissue, extremely dangerous to human health, found in older buildings

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Nitrogen Oxide (NOx)

Comes from fossil fuel combustion and motor vehicles, respiratory irritant, forms photochemical smog and precursor to ozone

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Ozone (O3)

When tropospheric (ground-level) it is a secondary air pollutant, formed from NOx and VOCs

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Sulfuric Dioxide (SO2)

Comes from burning high sulfur coal, oil, power plants, respiratory irritant

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Suspended particulate matter

Microscopic solid or liquid matter suspended in Earths atmosphere, causes respiratory distress and reduced visibility, #1 source is fires

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Volcanic Organic Compounds (VOCs)

Organic chemicals that evaporate at atmospheric temperatures, forms ozone, comes from vehicles, improper combustion, and fossil fuel evaporation

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Photochemical smog

LA smog, formed by photochemical oxidents (sunlight acting on compounds like NOx) and PM

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Thermal inversions

These occur when air temperature rises with height instead of falling

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Catalytic converter

It is an exhaust emission control device that converts toxic chemicals in the exhaust of an internal-combustion engine into less harmful substances

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Acid deposition

It occurs when atmospheric chemical processes transform sulfur and nitrogen compounds and other substances into wet or dry deposits on Earth

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Urban heat islands

It occur in metropolitan areas that are significantly warmer than their surroundings

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Noise pollution

It is an unwanted human-created sound that disrupts the environment