Sai Kung

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Sai Kung
Sector
Air Pollution
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Geographical characteristics and popultaion

• Sai Kung District covers area of 12,680 hectares
  and has a population of
• Sai Kung Central 13 261
• Pak Sha Wan 14 973
• Sai Kung Islands 9 360
• Hang Hau East 17 714

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Map
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Main Concerns

• Why do I scope on air pollution ?

Air Pollution is a very serious problem in Hong
Kong and thus, Sai Kung. Although, Sai Kung is
an outlying area, so the situation is not that
bad right mow, as amongst the skyscrapers in
downtown. But without taking appropriate
steps, it will change to worse.
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• Air pollution can make you sick. It can cause
  burning eyes and nose itchy, irritated throat, as
  well as trouble in breathing.
• Some chemicals found in polluted air cause
  cancer, birth defects, brain and nerve damage
  and long-term injury to the lungs and breathing
  passages.
• Some air pollutants are so dangerous that
  accidental releases can cause serious injury or
  even death.

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• Air pollution can damage the environment - Trees,
  lakes and animals have been harmed by air
  pollution.
• Air pollutants have thinned the protective ozone
  layer above the Earth - this loss of ozone could
  cause changes in the environment as well as more
  skin cancer and eye damages in people.
• Air pollution can damage property - It can dirty
  buildings and other structures. Some common
  pollutants eat away stone, damaging buildings,
  monuments and statues.
• Air pollution can cause haze, reducing visibility
  in cities and national parks and sometime
  interfering with aviation.

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General Guidelines
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Clear Air Act

• Was passed by US congress in 1963, last amended
  in 1990.
• It requires to set national Ambient Air Quality
  Standards for pollutants considered harmful to
  public health and environment.
• Those standards were divided into two categories

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Primary standards

• They set limits to protect public health,
  including sensitive population such as
  asthmatics, children and the elderly

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Secondary Standards

• They set limits to protect public welfare,
  including protection against decreased
  visibility, damage to animals, crops, vegetation
  and buildings
• Unit of measure for the standards, are parts per
  million (ppm) by volume, milligrams per cubic
  meter of air (mg/m3), and micrograms per cubic
  meter of air (µg/m3).

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(No Transcript)
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Hong Kong Government Air Pollution Index

• The Air Pollution Index (API) is a simple tool to
  describe air quality in Hong Kong. It is in the
  form of scale from 0 to 500, which is calculated
  from several sets of air pollution data (6 main
  pollutants)

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Air Pollution Index in Hong Kong
1500 21-Oct-2006
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Station Placement
There is no Station located near Sai Kung !
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There are six common air pollutants
One of the ground level air pollutant, that
causes human health problems and damages the
environment is ozone. It is also the main
ingredient of urban smog VOC NOx Sunlight
Ozone
Particulate Matter in another words a particle
pollution or PM it is a complex amalgam of
extremely small particles and liquid droplets. It
is mainly consists of acids (like nitrates and
sulfates), organic chemicals, metals, soil and
dust particles
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Carbon monoxide, is a odorless, colorless gas
which is formed when carbon in fuel is not burned
Completely. It is a component of motor vehicle
exhaust. Massive improvements in emission control
technology and vehicles, reduced its emissions
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Nitrogen oxides, in another words NOx, its a
group of gases, in which all of them Can find
nitrogen and oxygen in varying amounts. They are
mainly color and odorless. However, nitrogen
dioxide NO2 which is common pollutant, can be
seen as a brown-reddish layer over urban areas.
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Sulfur dioxide, in another words SO2. Those gases
are easily dissolvable in water. SO gases are
formed during burning of fuel that contains coal
or oil or during gasoline extraction from oils.
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Lead is a metal, which is found naturally in the
environment, as well as in manufactured Goods.
Historically, the major source of lead have been
motor vehicles (cars, trucks, etc.) but now
highest level of lead emission is in the metal
processing sector.