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Why do leaf pigments fade on paper?
Posted: Thu Oct 18, 2007 9:16 pm
by cobra14
Hi, I am a high school student taking biology. We did a chromatography experiment in class using leaf pigments and used ether as the solvent. I was wondering why after only a few days some of the papers have faded a lot (they were kept in the classroom). I kept some in my binder and they have not faded. Do any of you, knowing much better than me, know why?
Posted: Thu Oct 18, 2007 9:57 pm
by chromatographer1
Let me ask a couple of questions of you:
Was it dark inside your binder? in the classroom?
Was it drafty inside your binder? in the classroom?
I lied. I need to ask another question:
Do these two questions give you any ideas?
best wishes,
Rod
Posted: Fri Oct 19, 2007 1:13 am
by cobra14
Yes they do but my teacher said that temperature was a big part of the answer. Any help there?
Posted: Fri Oct 19, 2007 6:12 pm
by Mary Carson
Have you ever been to an art museum? Have you noticed that the paintings are usually kept well away from the windows? There's a reason for that.
Posted: Mon Oct 22, 2007 7:20 am
by HW Mueller
And another question: Was your binder kept at a different temperature than the class room?