ESCI 1 Lecture Notes - Lecture 7: Tropospheric Ozone, Ozone Layer, Passive Smoking

16 views2 pages
Air Quality
Air Quality and
Air Pollution
Air quality
Gases and small particles in atmosphere that influence
ecosystems or human well-being
Air pollution
Gases and particles present in high enough concentrations to
harm humans, organisms, and structures
Gases of atmosphere
Nitrogen (N2), oxygen (O2), argon (Ar) is over 99% of the
atmosphere
Trace gases are present in concentrations of parts per million
Some are stable while others vary widely in place and time
Volatile Organic Compounds (VOCs)
Chemicals that vaporize into the air
Either natural or anthropogenic
Aerosols
Tiny solid and liquid particles suspended in the air like
clouds and fog
Primary air pollutants
Chemicals and particles directly released into the air
Secondary air pollutants
Chemicals and particles that are formed by reaction of other
chemicals or aerosols in the atmosphere
Ozone (O3): ground level is dangerous while
atmospheric ozone protects us from the sun
Photochemicals
Secondary pollutants facilitated by sunlight
Causes the sunniest cities are also some of the most polluted
Ground level ozone: vehicle emissions containing nitrogen oxides
and VOCs interact in the presence of sunlight
From paints, solvents, and fuel evaporation
Point/Nonpoint Sources
Point sources
Stationary, localized sources like smoke stacks or factoriest
Non-Point Sources
Numerous sources that produce a relatively small amount
like cars or residential fireplaces
Indoor Air
Pollution
Generally more polluted than outside air
Cleaning products and domestic chemicals (pesticides, bug
spray, beauty products)
Combustion by-products
Carbon monoxide, nitrogen, and sulfur oxides, VOCS,
Unlock document

This preview shows half of the first page of the document.
Unlock all 2 pages and 3 million more documents.

Already have an account? Log in

Document Summary

Gases and small particles in atmosphere that influence. Gases and particles present in high enough concentrations to harm humans, organisms, and structures. Nitrogen (n2), oxygen (o2), argon (ar) is over 99% of the. Trace gases are present in concentrations of parts per million. Some are stable while others vary widely in place and time. Tiny solid and liquid particles suspended in the air like clouds and fog. Chemicals and particles directly released into the air. Chemicals and particles that are formed by reaction of other chemicals or aerosols in the atmosphere. Ozone (o3): ground level is dangerous while atmospheric ozone protects us from the sun. Causes the sunniest cities are also some of the most polluted. Ground level ozone: vehicle emissions containing nitrogen oxides and vocs interact in the presence of sunlight. Stationary, localized sources like smoke stacks or factoriest. Numerous sources that produce a relatively small amount like cars or residential fireplaces.

Get access

Grade+20% off
$8 USD/m$10 USD/m
Billed $96 USD annually
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers
Class+
$8 USD/m
Billed $96 USD annually
Class+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
30 Verified Answers

Related Documents