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~Air
Pollution~
-Introduction
-Pollutants
~Sulphur
dioxide
~Nitrogen
dioxide
~Carbon
monoxide
~Ozone
~Particulates
~Lead
-API
~What's API?
~In
Hong Kong
~Equipment
~API
figures
-Photochemical
Smog
~What
is it?
~Problems
~Effects
-Acid Rain
~How
it is formed?
~Effects
-Global warming
~Greenhouse
effect
~Effects
~What
can you do?
-Measures
~Part
1
~Part
2
~Part
3
~What
can you do../1
~What
can you do../2
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Air
pollution index
Two air pollution indices are issued
in Hong Kong : the general Air Pollution Index
and the Roadside Air Pollution Index.
The former represents the quality of air which
most people will experience at home, in school or at work.
The latter represents the quality of air in
busy streets. Hong Kong is the first city in the world to issue
a Roadside Air Pollution Index on a regular basis.
More
about API
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The Air Pollution Index (API) has been developed in Hong Kong since
June 1995. It is a simple way of describing air pollution levels to
provide timely information about air pollution to the public and to
enhance awareness. It serves also as an alert to the public before the
onset of serious air pollution episodes and helps the general public,
especially susceptible groups such as those with heart or respiratory
illnesses, to consider taking precautionary measures when necessary.
The API is calculated using data from 8 monitoring stations and taking
into consideration five major pollutants. It is calculated for the three
different air quality areas: urban, industrial and new development by
using results from corresponding monitoring stations. |
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