A new edition of a bestseller, now a bestseller in its own right, Air Quality, Fourth Edition provides a comprehensive overview air quality issues, including a better understanding of atmospheric chemistry, the effects of pollution on public health and the environment, and the technology and regulatory practices used to achieve air quality goals. The book contains new sections on toxicological principles and risk assessment; revised discussions on public policy concerns, air quality standards for ozone depletion and global warming, and the health effects of particulate air pollutants; and a glossary of terms, a Web resource guide, and metric/US units conversion tables.