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What is air pollution?
AIR POLLUTANTS
• These substances, known as
pollutants, can be natural or human-
made and may include gases, particulate
matter, and biological molecules.
Common air pollutants include:
• Particulate Matter (PM): Tiny particles
suspended in the air, such as dust, dirt,
soot, and liquid droplets.
• Nitrogen Oxides (NOx)
• Sulfur Dioxide (SO2)
• Carbon Monoxide (CO)
• Ozone (O3)
• Chlorofluorocarbons (CFCs)
Nitrogen Oxides (Nox)
Gases produced by
combustion processes,
primarily from vehicles
and industrial activities.
Carbon Monoxide (CO)
A colorless, odorless gas
produced by incomplete
combustion of carbon-
containing fuels.It
reduces the oxygen-
carrying capacity of the
blood.
Chlorofluorocarbons(CFCs)
• Chlorofluorocarbons (CFCs) are synthetic
compounds once widely used in refrigeration
and other applications. However, their
release into the atmosphere led to ozone
layer depletion. The Montreal Protocol,
established in 1987, successfully phased out
CFCs to protect the ozone layer. Alternatives
like hydrochlorofluorocarbons (HCFCs) and
hydrofluorocarbons (HFCs) were introduced,
although some HFCs contribute to global
warming. Efforts continue to manage and
reduce the environmental impact of these
substances.
This Photo by Unknown Author is licensed under CC BY
This Photo by Unknown Author is licensed under CC BY-NC-ND
SMOG
Smog is air pollution that reduces visibility. The word
“smog” was coined in the early 20th century. Smog is the
result of the reaction of emissions from automobiles,
factories, and industries with the sunlight and atmosphere.
When smog is inhaled, it may cause the following harmful effect on humans
Coughing and wheezing
Burning sensation in eyes and throat
Risk of serious heart diseases
Risk of serious lung disease.
Dangerous for people suffering from asthma.
Smogs can also kill plants.
air pollution.pptx

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air pollution.pptx

  • 1.
  • 2. What is air pollution?
  • 3. AIR POLLUTANTS • These substances, known as pollutants, can be natural or human- made and may include gases, particulate matter, and biological molecules. Common air pollutants include: • Particulate Matter (PM): Tiny particles suspended in the air, such as dust, dirt, soot, and liquid droplets. • Nitrogen Oxides (NOx) • Sulfur Dioxide (SO2) • Carbon Monoxide (CO) • Ozone (O3) • Chlorofluorocarbons (CFCs)
  • 4. Nitrogen Oxides (Nox) Gases produced by combustion processes, primarily from vehicles and industrial activities.
  • 5. Carbon Monoxide (CO) A colorless, odorless gas produced by incomplete combustion of carbon- containing fuels.It reduces the oxygen- carrying capacity of the blood.
  • 6. Chlorofluorocarbons(CFCs) • Chlorofluorocarbons (CFCs) are synthetic compounds once widely used in refrigeration and other applications. However, their release into the atmosphere led to ozone layer depletion. The Montreal Protocol, established in 1987, successfully phased out CFCs to protect the ozone layer. Alternatives like hydrochlorofluorocarbons (HCFCs) and hydrofluorocarbons (HFCs) were introduced, although some HFCs contribute to global warming. Efforts continue to manage and reduce the environmental impact of these substances. This Photo by Unknown Author is licensed under CC BY This Photo by Unknown Author is licensed under CC BY-NC-ND
  • 7. SMOG Smog is air pollution that reduces visibility. The word “smog” was coined in the early 20th century. Smog is the result of the reaction of emissions from automobiles, factories, and industries with the sunlight and atmosphere. When smog is inhaled, it may cause the following harmful effect on humans Coughing and wheezing Burning sensation in eyes and throat Risk of serious heart diseases Risk of serious lung disease. Dangerous for people suffering from asthma. Smogs can also kill plants.