by Dr. Ladi Anudeep

1. AIR POLLUTION
-Ladi Anudeep
ISM IUK

2. INTRODUCTION
• air pollution is the introduction of particulates, biological
molecules or harmful materials into earth's atmosphere
causing diseases, death to humans, damage to other
living organisms such as animals and food crops or
naturall or built environment
• the agents which cause polllution is called as pollutants
• there are two types of pollutants

4. • PRIMARY POLLUTANT:
• It is air pollutant emitted directly from a source
• SECONDARY POLLUTANT:
• It is not directy emitted from source but forms when other
pollutants react in atmosphere

6. sources
• Sources refer to location or factors which are responsible for releasing pollutants in
atmosphere
• 2 categories :
• 1) ANTHROPOGENIC SOURCES ( Human Activity):
• stationary sources like smoke, stacks of power plants
• mobile sources, motor vehicles, air crafts, chemicals, dust, controled burn practices
in agriculture and forestry management, fumes, aerial sprays,and other solvents
• 2) NATURAL SOURCES:
• Radon gas from radio active decay with in earth's crust
• methane emitted by digestion of food by animals
• dust from natural sources
• land with no vegetationsmoke and CO2 from wild fires

7. EFFECTS OF AIR POLLUTION
• 1) RESPIRATORY
HEALTH PROBLEMS:
• Several people die directly
/ indirectly due to
respiratory, heart problems
• people also suffer from
asthma, pneumonia

8. • 2)GLOBAL WARMING:
• Due to air pollution, there
are increased temperature
world wide which cause
increase sea levels,
melting of ice from ice
bergs

9. • 3) ACID RAIN:
• Harmful gases ike nitrogen
acids and sulphur acids
are released into
atmosphere durng burning
lot fossil fuels
• it causes famage to crops

10. • 4) EUTROPHICATION:
• Condition where high
amount of nitrogen present
in some pollutants gets
developed on sea surface
and itself turn into agae
and effects fish, plants

11. • 5) EFFECT ON WILD
LIFE:
• Toxic pollutants gets
deposited on water and
effects water animals

12. CONTROL MEASURES
• The atmosphere has several built in self ceaning processes such as dispersion, gravitational
settling, floccuation, absorption, rain washout etc to cleanse the atmosphere
• SOURCE CONTROL: some measures that can be adopted in this direction are
• 1) using unleaded petrol
• 2) using fuels with low sulphur and ash content
• 3) encouraging people to use pubic transport, walk or use a cycle as opposed to private
vehicles
• 4) ensure that houses, schools, restaurants and play grounds are not located on busy streets
• 5) plant trees along busy streets as they remove paticulates ike CO2 and absorb noise
• 6) industries and waste disposal sites should be situated outside the city
• 7) catalytic converts should be used to hep control emissions of carbonmonoxide and
hydrocarbons