where does air pollution come from? + what kinds of health effects does it cause?
TRANSCRIPT
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Where Does Air Pollution Come From?+
What Kinds of Health Effects Does It Cause?
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What is Air Pollution?
Particles or gases in the air that are not part of the normal composition of air
“Smog” is visible air pollution
Many pollutants, including some of the most dangerous, are invisible
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Where Does Air Pollution Come From?
Human-made pollution Burning fuel
Such as coal, oil, wood, and other fuels to power vehicles (ships, trains, trucks, cars)
Industrial activity Power plants, factories
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Two Major Sources of Air Pollution
Stationary sources
Mobile sources
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Important Air Pollutants
Ozone (O3) Particulate Matter
(PM) Carbon Monoxide
(CO) Nitrogen Oxides
(NO) Sulfur Dioxide (SO2) Lead (Pb)
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Ozone (O3) (Smog)
(Photochemical reaction)
Ozone - good up high, bad nearby
+ =Emissions Sunlight Ozone
(smog)
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Lungs & OZONE
It’s like getting
a sunbur
n in your lungs
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Particulate matterParticulate matter
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Particulate Matter
Particles that float in the air
Created by burning fuel
also dust and pollen
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Particulate Matter
10 to 100 times smaller than the width of a human hair!
Cross Section of a
Human Hair
PM 10 PM 2.5
This stuff is the most dangerous!
Ultrafine PM
•
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Particles in the Body
Particles travel with the air people breathe into the respiratory system
The larger a particle is, the more likely it is to get stuck in the body’s first defenses
The smaller a particle is, the more likely it is to travel on to the lungs
Ultrafine particles (the tiniest) can get into the bloodstream and move to other organs
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Lungs & particulate matter
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Routes of entry into the body
Breathing in, eating, absorb through the skin
In the lungs, pollution can directly damage the lung tissue causing illness or disease
From the lungs, they can get into the bloodstream and be transported to organs throughout the body
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Air Pollution Health Effects
Acute and chronic effects
Acute effects like itchy eyes
Premature babies (born earlier than they should be)
Heart disease Cancer
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USC Children’s Health Study
Children are more vulnerable to air pollution
In the more polluted communities, children have:
More doctors’ visits More missed school days Reduced lung growth and function Makes asthma worse More new cases of asthma near freeways
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1.1. Protect ourselvesProtect ourselves2.2. Try to pollute lessTry to pollute less3.3. Take action to Take action to
stop air pollutionstop air pollution
What can we do about it? It’s as easy as 1, 2, 3…
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Air Quality Index Lets you know when it is a high pollution day Stay inside to reduce risk when AQI is at 100
or higher AQI can be found in newspapers, TV, radio,
internetwww.AirNow.gov
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Air Quality IndexAir Quality Index(AQI) Values(AQI) Values
Levels of Health Levels of Health ConcernConcern
When the AQIWhen the AQIis in this range:is in this range:
...air quality ...air quality conditions are:conditions are:
0 to 500 to 50 GoodGood
51 to 10051 to 100 ModerateModerate
101 to 150101 to 150 Unhealthy for Unhealthy for Sensitive GroupsSensitive Groups
151 to 200151 to 200 UnhealthyUnhealthy
201 to 300201 to 300 Very UnhealthyVery Unhealthy
301 to 500301 to 500 HazardousHazardous
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Polluting less
Carpool Ride your bike or walk Take the bus Use vehicles and equipment that is well
maintained or electric
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Take Action
Teach others about what you have learned Tell government agencies that you want clean
air
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Credits
Presentation created by Carla Truax, through the Southern California Environmental Health Sciences Center
and the Trade, Health, and Environment Impact Project
Selected graphics (including lung animation): Carolina Simunovic & Fresno Metro Ministries
Photos: Andrea Hricko, Carolina Simunovic, and
Communities for a Better Environment