Air Pollution Part 1

Front 1

Chemical losses

Back 1

The primary chemical cleansing agent and the troposphere is the hydroxyl radical

Front 2

Dry and wet deposition

Back 2

Relative importance depends on, the phase of the substance gas or particle. The solubility at the substance in water. The mount a precipitation in the region. Terrain and type of surface cover

Front 3

Dry deposition depends on

Back 3

Turbulence at surface. For gasses, solubility and reactivity play a role. For particles, size density and shape. Properties of the surface

Front 4

Wet deposition requires

Back 4

Interception. Scavenging. Delivery

Front 5

Fundamental principle conversion of mass

Back 5

Front 6

Chemical transformation, VOC

Back 6

VOC--> CO2 + H2O

Front 7

Burning of carbon based fuels

Back 7

Front 8

National ambient air quality standards

Back 8

Control based on air quality criteria, 2 types primary which is health based and secondary which is welfare based And States must prepare implementation plans (sips)

Front 9

Hazardous air Pollutants (HAPS)

Back 9

Put in s'more hazardous thing criteria pollutants but are difficult to determine safe level the sources are often localized exposure

Front 10

Classification of sources

Back 10

Primary are emitted to the atmosphere and secondary are formed in the atmosphere

Front 11

Carbon monoxide source

Back 11

Incomplete combustion of carbon fuels.

Sink : CO + OH --> CO2 + H

Front 12

National carbon monoxide a missions by source sector

Back 12

Front 13

The global atmospheric processing of reactive nitrogen

Back 13

Front 14

Global sources of nitrogen oxide

Back 14

Front 15

Trends and politicians over time

Back 15

Front 16

Volitile organic compounds VOC

Back 16

Compounds primarily composed of hydrogen and carbon period of volitile meaning high propensity to be in a gaseous state Examples include methane benzene and isoprene

Front 17

Biogenics VOC emissions sensitive to

Back 17

Temperature, my, vegetation type and canopy structure

Front 18

National volatile organic compounds emissions by source

Back 18

Front 19

Well tile organic compound emissions by sources In multnomah county

Back 19

Front 20

Build-up of ozone

Back 20

Is due to the chemical reactions of hydrocarbons and nitrogen oxides in the presence of sunlight

Front 21

Ozone formation and the troposphere

Back 21

Front 22

Formation of ozone with NO

Back 22

Front 23

Tropospheric oxidation of general Hydrocarbon

Back 23

So more and 02 is produced that makes more ozone

Front 24

Formation of ozone simplified

Back 24

Front 25

Diurnal variations in precursors and photochemical oxidants

Back 25

Front 26

Modeling ozone formation

Back 26

Front 27

Urban air shed modeling

Back 27

Front 28

Anthropogenic nox emissions in the US by source category

Back 28

Front 29

Ozone concentrations versus nox and VOC emissions

Back 29

Ozone reduction and control is complicated reducing one or both could do nothing or even increase ozone. Nox creates and destroys ozone so relationship None linear