Paper chromatography uses selective adsorption on a strip of paper. It is used for separating and identifying mixtures that are or can be colored, especially pigments. This can also be used in secondary or primary colors in ink experiments.
Is it used for Contaminants in rainwater, Analysis of narcotics, and Detection of substances in urine.
• The purpose of this lab is to see the separation of dye on the candy.
Data and Observations
Prediction - Alcohol
Prediction - Salt Solution
Actual Results - Alcohol
Actual Results - Salt Solution
I saw that the water actually rose faster than the alcohol did through the paper slip.
Discussion and Conclusion:
A comparison of how each solution (salt water and alcohol) separated the pigments from each color of candy or ink type. Which solution worked better at separating each of the pigments (it may be different for different candy colors or inks), and why do you think that is?
If you had allowed less time for the lab (stopping the separation process when the solution was halfway up the paper), how do you think that would have affected your results? The colors wouldn’t have gone that far up.
What pigment colors traveled farther up the paper? What pigment traveled the least? Was it the same or different when those pigments appeared in other candy colors or inks? Was it the same or different when separated by alcohol instead of salt water? Red and orange traveled the farthest for the alcohol solution and green traveled the furthest for the salt solution. For the salt solution and for the alcohol solution the least was the pigment green. It was different . the alcohol seemed to separate the colors more.