United Kingdom
2

1420
points earned by our 575 teams

Chromatography Investigation
Posted by Corbridge Middle School, United Kingdom on 29 January 2019

As part of our planned fashion show which will happen in the summer term we talked about dyes and how they might affect the environment.

We used coloured pens and chromatography paper to see which colours are mixed for each pen. We cut the paper into short strips and placed a coloured dot of ink near the base of each strip. We then placed the bottom of the paper strip into a beaker containing a few drops of water. We then waited for the water to rise up the absorbent paper and watched as the colours separated out.

We found that different inks are made of different colours:

Ink colour

Dyes present

Brown

Blue, red, purple

Black

Pink, orange, brown blue

Dark blue

Pink, purple, blue

Purple

Pink, purple, blue

Red

Orange, brown, yellow

Green

Blue, orange, green, yellow

Black Sharpie

Did not run

The different inks are mixtures of different colours. As the ink is soluble in water they move up the absorbent paper. The more soluble the ink the higher up it rises. The black Sharpie pen did not run as the ink is not soluble in water.

Dyes for clothing are also made from mixtures of different colours. Man-made dyes can be harmful and may contain toxic metals. We want to protect our water supplies from pollutants. So we want to look at plant dyes as they would be less harmful to the environment. We will try roots such as turmeric, berries, bark, leaves, and wood.


|
Likes
 (3)

|
Likes
 (3)

Opportunities
Completing Challenges will help you climb the Water Explorer leaderboard. In addition, your project work can be used to support CREST and Eco-Schools Awards.

CREST Award (British Science Association)
Each year, over 32,000 CREST Awards are undertaken by 11-to-19-year-olds, giving them opportunities to explore real-world science, technology, engineering and maths projects in an exciting way.

Use Water Explorer Challenges as a basis for a CREST Bronze Award. To get the Award, you’ll need to spend at least 10 hours on your project. Find out more about CREST Bronze Award here.

Eco-Schools Award
Tackle Water Explorer Challenges and gather evidence to apply for an Eco-Schools Award. Challenges address several Eco-School topics including Water, Waste, Biodiversity and Global Citizenship. Take the plunge and go for your Green Flag Award! Find out more about Eco-Schools England here.

Contact the Water Explorer team through [email protected] with any questions on how Water Explorer can help you achieve sustainability success.

Local Partner Global Action Plan

Global Action Plan UK (GAP UK) is an environmental behaviour change charity that has been helping people to adopt more sustainable lifestyles for over 20 years. GAP UK works with schools, communities and businesses to develop and deliver programmes that change behaviours. 

GAP UK led the design of the global WaterExplorer programme and is coordinating its delivery across the 11 countries. You can find out more about us at www.globalactionplan.org.uk 

Water Explorer is supported by the
HSBC Water Programme
and is a Global Action Plan initiative
in association with
9.75 MB