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Study The Air Pollution In Singapore And Their Influence On Plants Growth (Through Rainwater). By: Zhou Jinquan(1P2)(leader) Yi Kuishuai(1P2) Wang Zhi Jian(1P2) Wang Jia Xin(1P2) Bryan Chia Jun Qing(1P1). Acid Rain. Acid rain can have harmful effects on life and infrastructure.

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Study the air pollution in singapore and their influence on plants growth through rainwater

Study The Air Pollution In Singapore And Their Influence On Plants Growth(Through Rainwater)

By:

Zhou Jinquan(1P2)(leader)

Yi Kuishuai(1P2)

Wang Zhi Jian(1P2)

Wang Jia Xin(1P2)

Bryan Chia Jun Qing(1P1)


Acid rain
Acid Rain Plants Growth

  • Acid rain can have harmful effects on life and infrastructure.

  • Caused by emissions of chemicals which react in the atmosphere to produce acids.

  • Also caused naturally by lightning and volcanic eruptions.

  • Rainwater below pH value of 5.6 is considered as acidic


Acid rain1
Acid Rain Plants Growth

  • From research, we found out that:

  • There are particulates in the atmosphere that would dissolve in rainwater

  • These particulates include volcanic ash, dust, very small rocks etc


Objectives
Objectives Plants Growth

  • Study the air pollution in different areas of Singapore

  • Study whether polluted air/rain has side effect on plant growth


Hypothesis
Hypothesis Plants Growth

  • Polluted air will lead to acid rain

  • Polluted air will lead to low transparency of rainwater

  • Polluted air/acid rain will affect the growth of plants


Variables
Variables Plants Growth

Independent Variables:

1.Locations in Singapore where the rainwater are collected

2. pH value of the water watered to the green beans

Dependent Variables:

1.pH value of the rainwater collected

2.Degree of light transparency of the rainwater

3. Height of green bean plants and number of leaves on them (the green bean plants)


Variables1
Variables Plants Growth

  • Constant Variables:

    • 1. Brand of pH paper/pH meter

    • 2. Type of light absorption meter

    • 3. Brand and size of containers

    • 4. Brand of rulers

    • 5. Type of cotton wools

    • 6. Type of green beans


Materials
Materials Plants Growth

  • Containers to collect rain water

  • pH meter

  • Light absorption meter (UV-Visible Spectra meter)

  • Green bean

  • Cotton wools

  • Rulers

  • Acids (nitrate + sulfuric acid)


Methodology
Methodology Plants Growth

  • Experiment 1:

  • Collect rainwater from 5 locations in Singapore for a span of 21 days

  • Measure pH value of rainwater

  • Measure light transparency of rainwater

  • Experiment 2:

  • Plant green beans (42) using water of different pH value, and observe their growth for a span of 9 days and repeat 3 times


Collecting rainwater experiment 1
Collecting Rainwater Plants Growth(Experiment 1)


Measure the ph value of rainwater experiment 1
Measure The pH Value Of Rainwater Plants Growth(Experiment 1)

pH meter


Measure the light transparency of rainwater experiment 1
Measure The Light Transparency Of Rainwater Plants Growth(Experiment 1)

container

particulates

Rainwater

Light before passing through

Light after passed through



Our ph values experiment 1
Our pH Values Plants Growth(Experiment 1)


Our light transparency experiment 1
Our Light Transparency Plants Growth(Experiment 1)


Green beans growth experiment 2 nitrate and sulfuric acid
Green Beans Growth Plants Growth(Experiment 2)Nitrate and Sulfuric Acid


Study the air pollution in singapore and their influence on plants growth through rainwater

Green Beans Growth Under Water Of Different pH Value Plants Growth

At the start of the experiment…

Day 3

Day 6

Day 9


Study the air pollution in singapore and their influence on plants growth through rainwater

Green Beans Growth Under Rainwater of Singapore Plants Growth

At the start of the experiment…

Day 3

Day 6

Day 9


What we can conclude
What We Can Conclude Plants Growth

  • (Experiment 1)

  • Woodlands is most polluted area in both light transparency and pH value as compared to other places.

  • The reason for this is maybe because there are many factories in woodlands

  • (Experiment 2)

  • The growth of green beans are arranged from the worst to the best: pH1, pH3, rainwater, pH5, pure water


Singapore s air quality
Singapore’s Air Quality Plants Growth

  • Singapore’s air quality is good as plants can germinate well under its rainwater.

  • The difference in pH values is about 1.2

  • The difference in light transparencies is about 12%

  • It would not do much harm to the environment and nature of Singapore

  • Singapore’s rainwater is not considered as acid rain in some parts of it such as Clementi


Continuation of investigation
Continuation of Investigation Plants Growth

We would like to compare the rainwater between east coast park and west coast park

We would just collect once and measure its pH value and light transparency. This experiment will be repeated 2 times


Web report
Web Report Plants Growth

  • http://www2.hci.edu.sg/y10hci0399/project2010.html


Common reflections
Common Reflections Plants Growth

  • Team work is important

  • Learnt things that could not be learnt in class

  • Learn about Singapore’s air quality


Restrictions and further investigations
Restrictions And Further Investigations Plants Growth

  • Due to lack of time and certain resources, our web report is not final and we will improve on it further as we continue on our project and we will like further investigate if the situation allows us.


Study the air pollution in singapore and their influence on plants growth through rainwater

Thank You! Plants Growth


Study the air pollution in singapore and their influence on plants growth through rainwater

Any Questions??? Plants Growth