2. Methods



Author: PUB
Article Name: ABC waters learning trails-Sungei Ulu Pandan
Link: http://www.abcwaterslearningtrails.sg/web/sungei-ulu-pandan.php

School of Science and Technology has started using the site as a venue for water quality experiments since 2012 and will continue to do comparative water quality studies. As part of Queensway Secondary School's Check and Patrol programme, the school will be patrolling Sungei Ulu Pandan to monitor the health of the environment around Sungei Ulu Pandan and watch out for littering or vandalism acts and offer feedback

Author: Ministry for the Environment and Water Resources
Article Name: Oral Reply by Dr Vivian Balakrishnan
Link: http://app.mewr.gov.sg/web/contents/contents.aspx?contid=1768

It is about water catchment. So two thirds of Singapore’s land area today is water catchment and eventually it could go up to 80% or 90%. What that means is that every drop of water on the ground or in the drain has a very high chance -- a 90% chance -- of ending up in the glass of water that you would drink.


Equipment list:
1.)Bucket (appx:700ml)--------------------------------------------------x1
2.)Rope (appx:5m)-------------------------------------------------------x1
3.)pH Sensors (Data Logger and pH probe)-----------------------------x1
4.)Water Containers (appx:200ml)-------------------------------------x10
5.Ionized water (pH level Neutral)--------------------------------x1 bottle
6.)Universal indicator (Paper form)-------------------------------------x50
7.)Macbook (provided by self)--------------------------------------------x3
8.Paper towels (for cleaning bucket)---------------------------------x1 roll

Materials Needed for the experiment

• Procedures: Detail all procedures and experimental design to be used for data collection

Collection of the water

1. Walk to Ulu Pandan River
2. Collect 100 ml of water from the river from different points.
3.If the water level is high, then attach a string to a bucket and drop the bucket into the river to collect the water.
If the water level is low, then head down into the river and collect the water using a bucket.
4.After collecting the water, use the pH data sensor(after dripping pure water on it to neutralize it) and test how acidic it is.
5.Head back to the lab to record the pH level of the water sample/s down.

Water condition of Ulu Pandan Canal

Data Collection

1.Dab the pH probe with ionized water and neutralize it.
2. Take the water collected from the river and place the pH probe into the water.
3. Test the water for it’s pH level.

The pH probe is inserted into the water

4.Take the pH level of the water and compare it with tap water’s pH level
5. Deduce if the water collected is neutral, acidic or alkalic

The datalogger show the pH level of the water.

pH level scale

• Risk and Safety: Identify any potential risks and safety precautions to be taken.
-Risky decisions and harm it could cause us. e.g. collection of water sample

•How to avoid risks and potential safety hazards
-During the collection of water we should not enter the canal or go to the canal without adult supervision.We should also use the bucket and the rope to collect the water instead of directly entering the canal and collecting up the water.

-Be careful in not accidentally spilling the water onto datalogger

• Data Analysis: Describe the procedures you will use to analyze the data/results that answer research questions or hypotheses

1. Observe at the pH level on the datalogger
2. Record down the pH level.
3. Repeat steps 1-2 for all other points of collection
4. Conclude our findings on the pH levels
5. Depending on our result (pH levels e.g. alkalic water,neutral water,acidic water) we will design a brochure with (charts,tables,graphs) in order to raise awareness to the surrounding residents about how changes of pH level in the canal can cause severe consequences.

litter in the canal

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