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Paper chromatography
Posted: Mon Feb 22, 2010 5:30 pm
by imabeast
why do diffrent inks move diffrent armounts?
and if you cant tell me why how can I figure it out?
something to do with the rf vaulue?
Re: Paper chromatography
Posted: Mon Feb 22, 2010 6:00 pm
by kgudger
Hello and welcome to the forums.
Have you tried typing "paper chromatography" into your favorite search engine? The first entry in mine was the Wikipedia page, which says:
Different compounds in the sample mixture travel at different rates due to differences in solubility in the solvent, and due to differences in their attraction to the fibers in the paper. The more soluble the component the further it goes.
Let us know if you have more questions.
Keith
Re: Paper chromatography
Posted: Tue Feb 23, 2010 6:31 pm
by deleted-42343
Just to add to what kgudger already said,
take a look at the introduction of this project idea, which will give you some more details about how chromatography works:
https://www.sciencebuddies.org/science- ... p008.shtml
Good luck!