Final Exam Flashcards
Pollutants
gases or particles (liquids or solids) that occur in sufficient concentrations as to endanger health, affect the well being of organisms, or disrupt the orderly functioning of the environment, affect the economy
Primary Pollutants
emitted directly by identifiable sources
Secondary Pollutants
result from chemical reactions in the atmosphere with primary pollutants
London, 1300
Coal-fire pollution - King bans fires inside city, bans end when king dies
Smog
(smoke +fog) 1905, Dr. Henry Antoine Des Voeux
Donora, PA Death Fog
October 1948, 6,000 ill, 20 fatalities, zinc smelter refused to stop production, temp inversion help pollution from zing smelter close to land surface
London smog
1952, temp inversion help in pollution, 4,000 fatalities in 5 days
Chattanooga, TN
Most polluted US city in 1969
Clean Air Act
Passed in 1970, signed by President Nixon
US Environmental Protection Agency
formed 1990, passed with bipartisan support, signed by President Bush
Point sources
includes factories and electric power plants
Mobil sources
Not only includes cars and trucks but also lawn movers, airplanes, and anything else that moves and pollutes the air
Biogenic sources
This category includes all nonanthropogenic (not human-generated) sources. Examples include trees and other vegetation, microbial activity, oil and gas seeps, etc.
Area sources
Small and individual sources such as dry cleaners and degreasing operations.
Non-point sources
Agriculture, lawns, golf courses, roads, construction; can be sources of particulates, pesticides, VOCs (Volatile Organic Compounds) and other pollutants
Vehicle emissions make up how much of CO2 emissions?
Nearly half