| Air Quality and Chemistry Michael Caughey |
|
 In
1998 the USEPA announced new air quality standards for fine particles. These
standards cover particulate matter (PM) less than 2.5 microns in diameter or
"PM-2.5". Fine particles are readily inhaled into the lungs and are thought
to be responsible for many of the adverse health effects of air pollution.
The atmosphere is also an important source of many harmful chemicals to the
environment. Water Survey research seeks to understand the sources and background
levels of particulates and toxic chemicals.Also See: Toxic Air Pollutants |