Environmental Chem Exam 3

water vapor

1-3% of troposphere

Nitrogen gas

78% of troposphere

oxygen gas

21% of the troposphere

Argon

0.9% of troposphere

Carbon dioxide

0.04% of troposphere

Montreal Protocol

The most successful international treaties regarding atmospheric pollution (ozone protection)

photoionization

an atom or molecule absorbs a photon, typically from ultraviolet (UV) or X-ray radiation, resulting in the ejection of an electron and the formation of a positive ion

CO

Concerning due to direct toxicity to humans

PAN

eye irritant in photochemical smog

CLO-

Depletes ozone in the stratospheric atmosphere in chain reaction.

NO

Produced in internal combustion engines (such as vehicles) and is a precursor to photochemical smog formation

O3

Formed in connection with photochemical smog and known to damage lung and plant tissue

SO2

Produced by coal power plants and strongly correlated with acid rain/deposition

climate mitigation

carbon sequestration, biomass conversion of co2 to biomass

climate adaptation

adjusting crops grown, energy efficiency

photochemical smog

happens more when warmer, eye irritation from nox, vocs and ozone. PM 2.5, 10 and PAN present