air purifier is important nowdays. It can help to reduce particle matters, haze

1. WHY AIR
PURIFIER IS
IMPORTANT

2. INTRODUCTIO
N

3. OVERVIEW
 Outdoor Air Pollution
 PM 2.5 and PM 10
 Indoor Air Pollution
 VOC
 Dustmite

8. HAZE
- Haze is caused when sunlight
encounters tiny pollution particles
in the air especially PM 2.5.
- More pollutants, more absorption
and scattering of light.
- Natural or manmade air pollutant.
- Natural  windblown dust, soot
from wildfires,
- Manmade  Vehicles, industrial
fuel burning, manufacturing
operations.

9. - Complex mixture of extremely small
particles and liquid droplets.
- Size of particles linked to their potential
for causing health problems.
- PM10  inhalable coarse particles,
2.5~10 micrometers. Eg, near roadways
and dusty industries.
- PM 2.5  fine particles, smaller than
2.5 micrometers. Eg, forest fires, gases
from power plants, industries.
- Premature death in people with heart or
lung disease, aggravated asthma,
increased respiratory symptoms such as
irritation of airways, coughing or
difficulty breathing.
PARTICULATE MATTER (PM)

10. Indoor air is 2-5 times polluted than
outdoor air!!!!
INDOOR AIR POLLUTION
Is outdoor air quality better than indoor air
quality?

12. VOC
- Volatile organic compounds are organic chemicals that have high
vapor pressure in room temperature.
- Large number of molecules evaporate to surroundings.
- Harmful VOCs typically not acutely toxic, but have compounding
long-term health effects.
- Major manmade VOCs: Protective coatings, paints, CFCs,
methylene chloride.
- Newly furnished buildings or furniture.

14. DUSTMITE

16. >10micrometer
<10micrometer

18. Refurnished
buildings
CONCLUSION
SAVE OURSELVES,
GET A BETTER AIR QUALITY
THERE IS NO DUPLICATE LUNGS

19. Stacy Simon. (2013). Why Lung Cancer Strikes Nonsmokers October 28,
2013 Source: http://www.cancer.org/cancer/news/features/why-lung-
cancer-strikes-nonsmokers
Environment Protection Agency
http://www.epa.gov/airtrends/aqtrnd95/backgrnd.html
http://www.airnow.gov/index.cfm?action=aqibasics.particle
http://www.red.fm/haze/haze-situation-in-penang-getting-worse/
Clarissa Sebag-Montefiore. (2011) CHINA: Pollution Real if not Official
December 19, 2011 Source:
http://www.globalissues.org/news/2011/12/19/12264
REFERENCE