1. Air and Air pollution Lecture 1 August 30, 2004 Chemistry and the Environment

2. Air On Friday I asked you to think about how much air you breathe (inhale) in a day? Can you determine this? How?

3. What’s is in a breath? 1 % Other 21% Oxygen 78% Nitrogen

4. Percents and ppm The EPA limit for Carbon Monoxide is 9 ppm. Express this as a percentage. Express the major components of air in ppm.

5. Minor components in air This goodly frame, the earth, seems to me a sterile promontory; this most excellent canopy, the air, look you, this brave o’erhanging firmament, this majestical roof fretted with golden fire, why, it appears no other thing to me than a foul and pestilent congregation of vapours. Hamlet by William Shakespeare “The devil is in the details”

6. Major gaseous Air pollutants Carbon Monoxide Ozone Sulfur Dioxides Nitrogen Dioxides As per the EPA http://www.epa.gov

7. Source – USA EPA

8. Carbon Monoxide Source – USA EPA