By Anonymous on Monday, March 26, 2001 - 12:20 pm:
hi i am doing a lesson plan on chromatography for a class i am in and i am wondering where is chromatography used, what are some jobs that use chromatography, and why is this an important lesson to be taught? is there anyone out there that can help me by answering these questions? i would really appreciate it. thanks for your time
CBerles
GVSU Student
Allendale, MI
By bill tindall on Wednesday, March 28, 2001 - 12:16 pm:
I am unclear on what you need. Are you a teacher preparing a lesson for a class? If so, tell me what grade and I will provide the information you requested targeted to the appropriate grade level. Also I can provide a nice chromatography experiment for 4th grade and up students that I have used with success.
By Anonymous on Friday, March 30, 2001 - 12:18 pm:
I've done a neat paper chromatography experiment using a non-indelible black magic marker, 70% isopropanol (can be bought at the drug store), a coffee filter (the bigger the better) and a tank that will hold the paper umright. Cut the filter into roughly square shape, and using a ruler, make a thick black line about 1 inch up from the bottom, from one side of the paper to the other. Pour the 70%IPA into the tank to fill about 1/2inch. Place the paper in the tank so that the black line is just above the level of the IPA. Cover the top (foil or film wrap will do) and let delevop. As the solvent moves up the paper, the dyes (red, green, blue, etc)will begin to separate into bands. This technique is one of the oldest forms of chromatography called paper chromatography. The end result is a rainbow of colors. You can explain that black ink is the presence of all colors. After it has developed, let dry, cut into strips and hand out to the students to use as bookmarks.
By Anonymous on Wednesday, April 4, 2001 - 11:14 am:
there are different kinds of chromatography. there is solid-liquid, liquid-liquid and liquid gas. (stationary and mobile phase)explanations of these can be obtained in various books.
uses are in the determination of sugars in food samples.(food industry)
dyes present in paint(paint industry)
determination of purity of gas in gas( gas industry)
in the petrol industry to determine it's purity
in the water industry to investigate if there are any contaminants both cations and anions.
well since i don't know what school level you are talking about i'm limited by how much i can send and the depth
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