The main objective of these updated global guidelines is to offer health-based air quality guideline levels, expressed as long-term or short-term concentrations
The U.S. Environmental Protection Agency (EPA) defines PM as a mixture of extremely small particles and liquid droplets comprising a number of components, inclu
Witnesses: Daniel Greenbaum, Health Effects Inst.; Ronald Wyzga, Electric Power Res. Inst.; Joel Schwartz, Assoc. Prof. of Environ. Epidemiology, Harvard School
Particulate matter are fine particles, and soot, which are tiny subdivisions of solid matter suspended in a gas or liquid. Sources of particulate matter can be