Effects of air pollution

Effects of air pollution

  • Human health
  • Animals
  • Plants
  • Material
  • Stratosphere
  • Environment

Impact on plants

  • Reduced plant growth
  • Damage to leaves of crops plant
  • Susceptible to disease, pest, Frost

Impact on materials

  • Cars
  • Homes
  • Monument, sites

Impact on health

  • By VOCs, suspended particles
  • Lung cancer
  • Headache, dizziness
  • Respiratory diseases
    • Asthma – By SO2, smoking
    • Bronchitis – NO2
    • Influenza, cold- NO2

Effect on human health

  • Irritation of eye, nose and throat.
  • In severe cases, there may be headache, nausea and loss of coordination and concentration.
  • It lowers our resistance to cold and pneumonia.
  • CO has affinity towards hemoglobin which cause disturbance in
    • transportation of oxygen
    • impairing our concentration
    • slow our reflexes
    • make us confused and sleepy
    • feel suffocation.
  • SO2 in the air lead to disease of lung and other lung disorders such as wheezing and shortness of breath.
  • Chronic respiratory disease- lung cancer, heart disease, damage to the brain liver or kidney.
  • Effect of arsenic, Asbestos, Mercury and Benzene can cause mutation, reproduction problems or even cancer.

Effects on plant

  • Pollutant enters through stomata.
  • Pollutant Erode waxy coating of the leaves called cuticle
    • Cuticle prevent excessive water loss and damage from disease pest, drought and Frost.
  • Destroy chlorophyll
  • Affect photosynthesis
  • Damage of leaf structure causes :-
    1. Necrosis – damage to leaf structure.
    2. Chlorosis- loss /reduction of chlorophyll causing yellowing of leaves.
    3. Abscission – Dropping of leave.
    4. Epinasty – Downward curling of leaves.
    5. Death of plants.

Effect on aquatic life

  • Precipitation in the form of acid rain cause high acidity in freshwater lake.
  • Acid rain affect aquatic life especially fish.
  • Some of freshwater lake have experienced total fish death.

Effect on material

  • Due to corrosiveness, particulates can cause damage to exposed surfaces.
  • Ozone causes crackling of rubber.
  • SO2 and water form H2S – corrosion as well as disfigurement of Statue made up of limestone or marble.
  • Oxides of Nitrogen can cause fading of cotton and Rayon fibres.

Effect on environment

  • Visibility
  • Pollutants in the presence of Sunlight produce photochemical smog.
  • Emission of greenhouse gases tends to global warming.
  • Chlorofluorocarbons carbons also cause Ozone layer depletion.

The phenomenon of trapping and reradiating heat by greenhouse gases in the atmosphere is referred to Greenhouse effect.

  • Natural greenhouse effect keep Earth warm .
  • Global mean temperature of earth is + 15 degree Celsius.
  • Water vapour, CO2, H2O, CH4, ozone and cfcs present in minute quantities but maintain the temperature of Earth.
  • In the absence of greenhouse gases, the temperature of earth would be much lower than – 20 degree Celsius.

Enhanced greenhouse effect means global warming.