first layer of the atmosphere containing about 80 percent of the atmosphere, consists of weather, civilizian, etc
second atmospheric layer, about 13 miles away. consists of ozone layer which is the earths sunscreen
clear, colorless, odorless corrosive liquid used in many things including alcohols, plastics, rubber, paints, etc
suspended particulate matter
particles suspended in the air (organic, inorganic, solid, liquid etc). most harmful types are fine and ultra fine
ozone is bad in troposphere. causes asthma and other problems in children. damages trees and crops
volatile organic compound
emitted as gases from certain solids or liquids. concentrations of VOCs are up to 10 times higher indoors than outdoors. includes variety of chemicals that have adverse health affects.
-comes a problem in confined spaces and underground wells over radon deposits. uranium is source of radium and radium is source of radon. said to be second leading cause of lung cancer
-bigger problem during winter. consists mostly of sulfur dioxide, suspended droplets of sulfuric acid, and suspended solid particles.
toxic pollutants released thousands of miles to the south evaporate in the warm climate, riding winds until they reach cold air of the arctic where they fall to the earth
when a layer of cold air sits on top of a layer of warm air, not letting the warm air go up
combination of acidic particles that fall to the earth. could be wet (rain, snow, mist, fog) or dry (just dry particles). can be caused naturally (lightening, volcano etc) or by people (fuel combustion, smoke stacks). stays for up to 14 minutes in the sky before it falls to the earth so it gets spread, global problem not local
sick building syndrome
describe when building occupants experience acute health effects linked to time spent in a building without identifying specific illness or causes, result of bad air pollution. symptoms include dry skin, diziness, throat irritation, headache, fatigue, etc
used in building construction and fire retardant. naturally occuring fibrous minerals. increase risk of lung disease since the fibers can be breathed in.
chemical used in building materials and household products. can cause watery eyes, burning sensations in eyes and throat, and difficulty breathing
clean air act
law that defines EPA's responsibility for protecting and improving the nations air quality and stratospheric ozone layer.
national ambient air quality standards
requires periodic review of things that need to be limited and such. carbon monoxide, lead, nitrogen dioxide, ozone, particulate matter, and sulfur dioxide