Aug 20 2012

Chemistry Principles: Performing Simple Chromatography

Posted by admin in Chromatography

Chromatography is the art of suspending a substance’s chemical structure and breaking down each part that creates its chemical structure. Professors in chemistry classes often make use of simple chromatography experiments to clearly demonstrate its principles to students. Here is a simple chromatography procedure that most professors introduce to their students when it comes to chromatography.

1. The Items You’ll Need

You’ll need the following to perform the procedure:

1.) Coffee Filter
2.) Pencil
3.) A small cup
4.) Water

2. Preparations

First, cut a strip of the coffee filter, ensuring that it is thin and wide enough to stick out from the cup and wide enough for you to see the chromatography. Usually, two inches and the height of the cup is enough for the coffee filter. Then, draw a thick line on the coffee filter above the water’s edge. Two thirds on the way down is effective. Tape the filter to the pen or pencil to stretch it out. Be sure it is taped tightly.

3. Chromatography Proper

Fill the cup with half an inch of water. The mark on the coffee filter shouldn’t touch the water’s edge. Place the coffee filter inside the cup and allow the pencil to rest on top of the cup’s mouth. If the filter is not touching the water, add more water. Wait for a while. If the coffee strip is quite long, just leave it overnight. In a few hours, you’ll find that the colors used to make the marker’s ink or any pigment used run up from the marker’s edge to the pencil like a rainbow.

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