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Soot,
smoke ash,
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aromatic
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compounds
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Power
plants, (coal), steam
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engines,
diesel engines
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Air
quality, deposit of soot, blackens objects, sufficient to drive
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natural
selection to black moths, health hazard, deposits in
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lungs,
e.g., London smog, climate impact through creating
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opacity,
largely but not completely controlled today. Still a
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big impact in
parts of Asia.
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Power
plants (coal, heavy oil),
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diesel
engines, gasoline
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engines
(Sulfur content
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has been
reduced)
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Acid
rain, lakes are acidified (particularly those without buffering
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capacity
e.g. in Canada and Scandinavia), corrosive, causes
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erosion
of limestones, and sandstones particularly in
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buildings,
and outdoor sculptures, e.g. gothic cathedrals,
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dissolves
synthetics like nylons, further
reductions are likely,
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but
technology to deal with the problem is in place and
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applied
(however notice grandfathering).
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Cars,
power plants, any
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combustion
process, NOx
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results
from the oxidation
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of
atmospheric nitrogen
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with
atmospheric oxygen
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in
high temperature flames
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Air
quality issues, NOx is a precursor to photochemical smog, i.e.
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the
production of tropospheric ozone, e.g. smog in Los
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Angeles
but elsewhere as well, diffuse
impact on the
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ecological
balance through eutrophication of lakes etc. NOx
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ultimately
leaves the atmosphere, resulting nitrogen fixation
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greatly
changes nitrogen availability to nearly all ecosystems.
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Current
regulations limit NOx emissions.
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