Atmospheric Pollutants Questions And Answers Page 2
ADVERTISEMENT
1
2
3
49.
Why are CO and CO
air quality concerns?
2
Carbon monoxide is a concern because it can adversely affect human health
at elevated concentrations. Carbon dioxide is a major greenhouse gas that
can cause global warming.
10.
How are CO and CO
removed from the atmosphere?
2
Carbon monoxide is oxidized to CO
. Carbon dioxide is absorbed by oceans
2
and other bodies of water and can be taken up by plants.
11.
Describe the relative significance of emissions of SO
and reduced sulfur
x
compounds to the atmosphere.
Sulfur dioxide is an atmospheric pollutant that can adversely affect humans,
plants, and materials. On conversion to H
SO
, it is the major contributor to
2
4
acidic deposition and visibility reduction. Reduced sulfur compounds are
minor pollutants that primarily cause malodor problems.
12.
Three major nitrogen oxides are naturally present in the atmosphere and are
released to it by natural and anthropogenic sources. These are N
O, NO, and
2
NO
. Describe the environmental significance of each.
2
Nitrous oxide (N
O) is a greenhouse gas and source of nitrogen in the
2
stratosphere. Nitric oxide (NO) is a precursor molecule to NO
; NO
absorbs
2
2
sunlight and initiates atmospheric photochemical reactions.
13.
What roles do paraffinic, olefinic and aromatic hydrocarbons play in atmospheric
chemistry?
Paraffinic hydrocarbons are relatively unreactive and play a limited role in
the atmospheric chemistry of urban areas. Olefins are highly reactive and
play a primary role in atmospheric photochemistry. Aromatic hydrocarbons
are intermediate in reactivity.
14.
How do peroxy radicals affect tropospheric O
levels?
3
Peroxy radicals react with NO, converting it to NO
. By doing so they
2
increase the amount of NO
available to form O
and decrease NO, which
2
3
scavenges O
.
3
15.
What role does ammonia play in atmospheric chemistry?
Ammonia neutralizes strong acids, e.g., sulfuric and nitric acids.
16.
How do aldehydes and organic acids affect air quality?
Aldehydes such as formaldehyde promote photochemical reactions.
Formaldehyde is also an eye irritant. Dicarboxylic acids are particulate-
phase substances produced photochemically that scatter sunlight.
ADVERTISEMENT
0 votes
Related Articles
Related forms
Questions And Answers About The New 100% Disabled Veteran's Homestead Exemption - Texas Veterans Land Board
Business
Publication 774 - Purchaser's Obligations To Pay Sales And Use Taxes Directly To The Tax Department Questions And Answers - Nys Department Of Taxation And Finance
Financial
Related Categories
Parent category: Education