Jayne

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Jayne
Bill
WELCOME
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Information
Fire, Toilets
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Air Pollution

• What do we mean by the term pollutant?

What are the pollutants that cause air pollution?
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There are six common air pollutants

• Sulphur dioxide
• Carbon Monoxide
• Nitrogen oxides
• Lead
• Ozone
• Particulates

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Where do these pollutants come from?
Sulphur dioxide
Carbon monoxide
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Lead
Nitrogen oxides
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Ozone is formed by a chemical reaction between
nitrogen oxides and (VOC) volatile organic
compounds in the presence of sunlight.
Particulates are made up from nitrates and
sulphates, metals, soil, dust.
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Why should we worry about these pollutants?
Sulphur dioxide - helps form acid rain,
contributes to respiratory diseases Carbon
monoxide - poisonous gas, blocks oxygen from
being carried in the blood Nitrogen oxides
smog (ozone), acid rain, greenhouse gas, water
quality Lead poisonous, attacks the organs
Ozone - smog Particulates smaller
particulates are a greater cause of concern.
Breathing and heart problems

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How could we measure the amount of particulates
in the Park?
What do we mean by taking a sample?
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• Field study investigation
• Follow a transect
• Identify trees
• Measure and age trees
• Take two samples from each tree
• Count particulates

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Safety in the Park
No pics or text, last slide
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Random quadrats
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What might be the problems with this type of
investigation?

• Prevailing wind
• North side of tree
• Difficulty of telling algae/moss from other
  particulates
• Different trees bark types
• Other effects?

What other methods could we use?