6.3

Pollution management strategies

100

What are pollutant management strategies?

A change in human activities which helps prevent and reduce air pollutants.

200

State some strategies used around the world.

driving cars less; turning off engine; use of alternative energy sources; reduction in burning fuels; recycling materials

300

What are some examples from the bejing case study on fixing these issues?

Use gas powered stations, replacing coal powered. 

Limiting use of cars

Banning use of trucks and other heavy emission vehicles 

Reduce emmisions from factory

Photochemical smog

100

How is photochemical smog formed?

It is formed via a high level of atmospheric pollutants, primarily ozone and nitrogen oxides interacting with strong sunlight.

200

What are primary pollutants and some examples.

They are emited directly from pollutants process, being natural or antropogenic

- carbon monoxide 

-CO2

- unburned hydrocarbons

300

Give an example of a secondary pollutant.

- tropospheric ozone

400

Define secondary pollutants.

Formed when primary pollutants undergo reactions whilst already in the atmosphere.

500

State the main effects on humans, plants and materials and products.

plants: leaves absorb ozone; degrades chlorophyll; reduces photosynthesis

humans: breathing difficulties; respiratory diseases

materials and products: attacks rubber and some plastics; degrades car tires; bleaches fabrics