emissions (stationary source)

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are the atmospheric pollutants from fossil fuel combustion in furnaces and boilers. Stationary combustion sources contribute significantly to total man-made emissions of sulfur oxides — predominantly sulfur dioxide (SO₂), with some sulfur trioxide (SO₃) — nitrogen oxides (NOx), and particulates, but emit comparatively minor amounts of carbon monoxide (CO) and hydrocarbons (HC). Means of controlling stationary source emissions include: flue gas scrubbing with a chemical substance such as sodium hydroxide to remove sulfur, burning naturally low-sulfur fuels, lowering combustion temperatures to reduce NOx formation, and using electrostatic precipitation to reduce particulate emissions.

Also see emissions (automotive), pollutants.