Page 58 - Fundamentals of Air Pollution

34 2. The Natural versus Polluted Atmosphere

5. How does the diameter of airborne pollen grains compare with the diameter of a human
hair?
6. What are the principal chemical reactions that take place in the chemosphere to give it its
name? How do they influence stratospheric and tropospheric chemical reactions?
7. What are the source and nature of the condensable organic vapors in unpolluted air?
8. Has the composition of the unpolluted air of the troposphere most probably always been
the same as in Tables 2-1 and 2-2? Will Tables 2-1 and 2-2 most probably define unpolluted
air in the year 2085? Discuss your answer.
9. Describe the apparatus and procedures used to measure atmospheric ions and nuclei.