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24
WHAT IS
PM2.5?
SOURCES
HEALTH
RISKS
PM2.5 refers to particulate matter in the air with a diameter
of 2.5 micrometers or less. Due to its size, PM2.5 is considered
the most hazardous pollutant to human health as it can
be absorbed into the bloodstream via the lungs.
Outdoor: vehicles, wood burning, industrial activities
and other forms of combustion.
Indoor: leaky windows and doors, stove top cooking,
replaces, incense, cleaning products and fragrances.
Short term: eye and nose irritation, irregular
heartbeats, chest pain and sorethroat.
Long term: asthma, emphysema,
lung
damage, cancer, strokes, heart attacks
and premature death.
PM2.5 introduction
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