Page 254 - Fundamentals of Air Pollution

Questions 215

5. How can human observers, optical measurements along a line of sight, and point measure-
ments by nephelometry provide conflicting information about visual air quality in the same
location?
6. Using the Code of Federal Regulations, list the current reference methods for measuring
NO 2, QS, SO 2, CO, total suspended particulate matter, and lead,
7. List two types of calibration sources for gas analyzers.
8. Review the air pollution literature and describe the difficulties in establishing a standard
reference method for measuring NO 2.
9. Describe the deficiencies of a total suspended particulate measurement for relating ambient
concentrations to potential human health effects.