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PM2.5


EPA Retains Soot Standards; Drastic PM Reductions Already Achieved, Industry Says
emissions-carbon-dioxide

In a significant but controversial final action, the Environmental Protection Agency (EPA) on Dec. 7 retained its existing National Ambient Air Quality Standards (NAAQS) for both fine and coarse particulate…


Particulate Matter Should Be Focus of Air Emissions Regulations

Residents of Texas living downwind of coal-fired power plants would be far better off today if regulators had focused on cutting particle-forming SO2 emissions rather than concentrating so keenly on…


IEA: World’s Power Sector Trails Others in Air Emissions

The world's power sector last year emitted a third of global sulfur dioxide (SO2) emissions, 14% of nitrogen oxides (NOx), and 5% of total particulate emissions (PM2.5), but those emission…


A Brief History of In-Stack PM Measurement

This is an online supplement to the feature story “The  Need for Alternate PM2.5 Emission Factors for Gas-Fired Combustion Units” in the July 2015 issue of POWER. The history of…


The Need for Alternate PM2.5 Emission Factors for Gas-Fired Combustion Units

The Environmental Protection Agency’s emission factor resource, AP-42, is not your only option for developing particulate matter (PM) emission rates. Results of a prominent PM emissions measurement research program for…