Air Pollution Part 1 Flashcards

(61 cards)

1
Q

What is ambient air?

A

The air around us

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2
Q

Which pollutants does fire release?

A

Pm and CO

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3
Q

Which pollutant do volcanoes release?

A

SO2, S, pm

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4
Q

What pollutant do forests release?

A

VOCs

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5
Q

Which pollutant does rotting material release?

A

CH4

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6
Q

What are 4 examples of primary pollutants?

A

Hg, NOx, SO2, pm

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7
Q

What are 3 examples of secondary pollutants?

A

Acid rain, HNO3, H2SO4

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8
Q

What reacts with primary pollutants to create secondary pollutants?

A

Air, UV light, water

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9
Q

What did the clean air act in 1955 accomplish?

A

National ambient air quality standards (NAAQS)

Set up cap and trade program for SO2 emission

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10
Q

What are 7 criteria pollutants?

A
Sulfur oxides (SO2)
Nitrogen oxides (NO2)
Carbon oxides (CO, CO2)
Metals (Pb, Hg)
Particulate matter 
VOCs
Photochemical oxides
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11
Q

What does VOC stand for?

A

Volatile organic compounds

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12
Q

Is nitrogen oxide a primary or secondary pollutant?

A

Primary

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13
Q

What is the chemical formula for nitric acid rain?

A

NO + O + H2O = HNO3

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14
Q

What are 3 natural sources of nitrogen oxide?

A

Fire smoke, swamps, N-cycle

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15
Q

What are 3 anthropogenic sources of nitrogen oxide?

A

Coal, petroleum, nitrate

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16
Q

Sulfur compounds cause ___% of acid rain

A

75

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17
Q

What is the chemical formula for sulfuric acid rain?

A

SO2 + H2O + O + H2SO4

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18
Q

What are 2 natural sources of sulfur?

A

Volcanoes, sea spray

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19
Q

What are 3 anthropogenic sources of sulfur?

A

Coal, petroleum distillation, smelting

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20
Q

What is the order of the nitrogen cycle?

A
N2O in air
Nitrogen fixation
Nitrification
Assimilation 
Ammonification
Denitrification
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21
Q

What happens in nitrogen fixation? (Abiotic)

A

Gas is turned to a liquid or solid by lightning or cosmic radiation, N is combined with O to make HNO3

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22
Q

What happens in nitrogen fixation? (biotic)

A

Gas is turned to a liquid or solid by bacteria rhizobium in root nodules of plants

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23
Q

What are 2 examples of legumes?

A

Soybeans and alfalfa

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24
Q

What happens in nitrification?

A

Bacteria change nitrogen so plants can use it

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25
What is the nitrogen cycle "prom queen"?
NO3
26
What happens in assimilation?
NO3 is used by plants and becomes NH4
27
What is NH3?
Ammonia
28
What is NH4?
Ammonium
29
What happens in ammonification?
Waste and dead things are decomposed into NH3
30
What happens in denitrification?
Anaerobic bacteria change NH3 and NH4 into N2O and release them into the air
31
What percent of CO2 is released and absorbed by plants?
97%
32
Where is carbon stored and how is it released?
In living matter, upon decomposition
33
What is the chemical formula for carbonic acid?
CO2 + H2O = H2CO3
34
What does CO cause?
Asphyxiation
35
What causes CO to form?
Incomplete combustion
36
What are 3 metals that are pollutants?
Pb, Hg, As
37
What is a natural source of pollutant metals?
Metals being leaches out of rock
38
What are 2 anthropogenic sources of pollutant metals?
Fossil fuel combustion, smelting
39
Lead is what what fraction of metallic air pollution?
2/3
40
What are 6 sources of lead?
Gas, paint, pipes, lead shot, jewelry, make up
41
What does mercury bioaccumulate as?
Methylmercury
42
What are 2 anthropogenic sources of mercury?
Coal and gold mining
43
What 2 things does arsenic poisoning cause?
Neurological disturbance and multi system failure
44
What are 2 anthropogenic sources of arsenic?
Pesticides and wood preservatives
45
What is particulate matter?
Liquids or solids suspended in gas
46
What are 3 natural sources of PMs?
Volcanoes, fires, pollen
47
What are 3 anthropogenic sources of PMs?
Coal/diesel burning, farm tilling, asbestos
48
What is asbestos and what does it cause?
It was a fire retardant, it causes mesothelioma lung cancer
49
What are VOCs?
Organics that evaporate at room temp
50
What does VOC stand for?
Volatile organic compounds
51
What are 5 VOCs?
``` Methane (CH4) Benzene (C6H6) Hydrocarbons Halocarbons Oxygenates ```
52
What are hydrocarbons?
Compounds that only have hydrogen and carbon
53
What are oxygenates?
Fuel that is oxidized turns CO into CO2
54
What 2 organs can VOCs cause damage to?
Liver and kidneys
55
What are 3 natural sources of VOCs?
Rice paddies, wetlands, forests
56
What are 4 anthropogenic sources of VOCs?
Landfill gas (CH4) Industries Car exhaust Cleaning chemicals
57
How are photochemical oxidants formed?
when UV light combined chemicals with oxygen
58
What is the most common photochemical oxidant?
Ozone
59
What is the chemical formula for ozone?
UV light + NOx + VOCs + CO = O3
60
What type of problems does ozone cause?
Respiratory
61
What are 3 ideal elements to make smog?
Sunny Dry Traffic