The document discusses particulate matter pollution in Bangladesh. It defines particulate matter as airborne particles less than 10 micrometers in size from sources like dust, pollen, and smoke. It notes that particulate matter can affect heart and lungs and lists some key facts about particulate matter pollution such as its sources from traffic, industry and other human activities. It describes the different types of particulate matter based on size, potential health impacts of particulate matter pollution in Bangladesh, and ways to help prevent particulate matter pollution.

1. Name: Tahmid Ahmed
ID: 2016-1-68-007
Name: Antar Karmakar
ID : 2016-2-60-113
Name: Asif Mahmud
ID: 2016-2-60-116
Name: Md. Niaz Mahmud
ID: 2013-3-50-012

2. •What is Particulate Matter?
•Facts About PM Pollution
•Where Does The PM Originate?
•Types of Particulate Matter
•Sources of Particulate Matter
•Determinants of PM Concentration
•Affects of PM in Bangladesh
•How Can We Prevent Particulate Matter?

3. Particulate Matter (PM)
Particulate matter (PM): PM is a complex mixture of air borne
particles that differ in size, origin and chemical composition, all of
which are <10 µm in size.
Example : Dust, pollen, soot, smoke
These particles can affect the heart and lungs and
cause serious health effects PM is 1000x smaller then
human hairs.

4. FACTS ABOUT PM POLLUTION
•PM is one of the six EPA ‘criteria pollutants’.
•PM has no fixed composition. The particles may consist
either of only one chemical (e.g. sulphate, sulphuric
acid, or lead oxide ) OR a number of pollutants ( organic
chemicals, metals, dust ).
•US EPA described PM pollution as ‘mixture of mixtures’.
•PM is among the most harmful of all air pollutants.

5. Sources may emit PM directly into the
environment or emit precursors such as
sulfur dioxide (SO2), nitrogen dioxide (NO2),
and volatile organic compounds (VOCs),
which are transformed through atmospheric
chemistry to form PM.

6. TYPES OF PARTICULATE MATTER
According to size there are two types of PM.
PM10: Diameter 2.5-10 μm (It is created from
road dust and particles from worn out engines
and breaks) .
PM2.5: Diameter <2.5 μm (It is created from
diesel engine exhausts)

8. PM can be caused by both natural sources and human
made sources.
Volcanic eruptions, sea salt, or soils are the main
natural sources. Human made sources are car exhausts,
industry, shipping and coal and ore fabrications, this
increase airborne particulate matter concentrations on
many locations.
Emissions from traffic, particularly from diesel engines,
are most damaging to human health.

10. Determinants of PM Concentration
•Weather patterns
•Wind
•Stability (vertical movement of air)
Turbulence
•Precipitation
•Topography
•Smokestack height and temperature of gases

11. • Making lakes and streams acidic.
•Changing the nutrient balance in coastal
waters and large river basins.
•Depleting the nutrients in soil.
•Damaging sensitive forests and farm crops.
Affecting the diversity of ecosystems

12. •According to the World Health Organisation, over
37,000 Bangladeshis die annually from diseases
related to air pollution.
• Dhaka is the third largest particulate matter city in
Asia.

14. What Are The Affects Particular Matter Has On
Our Health?
1. PM pollution can cause lung irritation, which leads to
increased permeability in lung tissue.
2. PM aggravates the severity of chronic lung diseases,
causing rapid loss of airway function.
3. PM causes changes in blood chemistry that can result in
clots that may lead to heart attacks.
4. PM causes inflammation of lung tissue, resulting in the
release of chemicals that can impact heart function.

16. 1. Children under 18 age.
2. Adults 65 and older.
3. Anyone with chronic lung diseases such as
asthma, chronic bronchitis or emphysema.
4. Anyone with a cardiovascular disease.
5. Anyone with diabetes.
People at risk (sensitive
human population )

17. Reduce diesel emissions by replacing older engines with
newer and cleaner engines.
Mulch garden refuse instead of burning it.
Take action to reduce wildfires.
Pay attention to recommended maintenance schedules
for your vehicle.
Finally, Stop smoking; if you do smoke, do not smoke
indoors.