Pollution is the introduction of contaminants into the natural environment that cause adverse change. Pollution can take the form of any substance or energy. Pollutants, the components of pollution, can be either foreign substances/energies or naturally occurring contaminants.

1. ENV 101: Environmental Science & Sustainability
Summer 2022
Pollution and Human Health

2. Pollution

3. Pollution and Human Health

4. Human Health
Monday, November 21, 2022 4
International University of Business Agriculture and Technology

6. Air Pollution

7. What is Air Pollution?
Any visible or invisible particle or gas found in the air that is not part of the
original, normal composition.
It is the addition of harmful substances to the atmosphere resulting in damage to
the environment, human health and quality of life.

8. Sources?
Natural
 Pollen grain and spores
 Dust storm
 Forest fires
 Volcano eruptions
Man made
• Coal, wood and fossil fuel burning
• Haze
• Industrial emission
• Chemical process
• Incineration

10. AQI: Air Quality Index
• Indicates whether pollutant levels in air may cause health
concerns.
• Ranges from 0 (least concern) to 500 (greatest concern)

11. AQI
Air Quality Index Levels of
Health Concern
Numerical
Value
Meaning
Good 0 to 50 Air quality is considered satisfactory, and air pollution poses little or no risk
Moderate 51 to 100
Air quality is acceptable; however, for some pollutants there may be a moderate
health concern for a very small number of people who are unusually sensitive
to air pollution.
Unhealthy for Sensitive Groups 101 to 150
Members of sensitive groups may experience health effects. The general public
is not likely to be affected.
Unhealthy 151 to 200
Everyone may begin to experience health effects; members of sensitive groups
may experience more serious health effects.
Very Unhealthy 201 to 300
Health warnings of emergency conditions. The entire population is more likely
to be affected.
Hazardous 301 to 500 Health alert: everyone may experience more serious health effects.
https://bd.usembassy.gov/embassy/air-quality-data/
Till the filing of this report, US AQI of Dhaka was standing at 608

14. Indoor Air Pollution
 Human kind faces the most prolonged and worst exposure to
pollution within the four walls of home.
 Indoor air pollution can have an astonishing variety of sources
incl. cooking gas, heaters, fire places, wood or coal burning
stoves, cigarette smoking, household products like
detergents, waxes, polishes, air fresheners, pesticides, glues,
paints, hair sprays, oven cleaners, permanent press fabrics,
synthetic fibers and cleaning activities like dusting and
vacuum cleaning.
 And whatever pollutes the outside air eventually becomes
indoor pollution as well, especially in older leaky buildings

15. How to stop air pollution?
 More uses of public transport
 Walking
 Bicycles
 Clean energy
 complete ban of old vehicles
 Public awareness
 Need to increase plantations
 replacing a technological process that doesn’t pollute the air.
 prevention of escape of toxic substances into the air

21. Soil Pollution

22. Soil Pollution

23. Causes of Soil Pollution

25. Effects and Solution of Soil Pollution

26. Noise Pollution

27. What is Noise Pollution?
Sound pollution, also known as environmental noise or
noise pollution, is the propagation of noise with harmful impact on
the activity of human or animal life.
Sources:
The source of outdoor noise worldwide is mainly caused by
machines, transport and transportation systems.
1. Household
2. Social Events
3. Transportation
4. Commercial & industrial

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30. Noise Pollution and Human Health

32. Thanks for your kind
Attention