This is the BEST explanation of how chromatography works. It completely boggles my mind that I'm paying to sit in lectures and be "taught" lab techniques by professors who explain absolutely nothing about how this works when the explanation is so simple. Thank you!
holy crap, this is an unbeleivabal level of explaination. i'm hooked to this site and will recommend to all my students. bloody awesome work. Do keep making more.
Thanks, Daniel. Please share with your colleagues, friends and students. I am always working on new videos to add to my channel at ruclips.net/user/chemsurvival
he knows a lot about the science stuff, professor davis explains... OOPS wrong channel. Well you are pretty good teacher! thanks for your lessons, they help a lot (I struggle- biochem major :_D)
Hi, in paper chromatography, the stationary phase consists of water molecules embedded within the porous structure of the cellulose fibers. Thus, this stationary phase is polar in nature. However, the solvent used normally in separation of say a black ink typically involves the use of water as a solvent which is polar also. Thus, wouldn't the interaction between the solvent (water) and the stationary phase (polar) make the water molecules in the solvent be adsorbed more strongly onto the stationary phase? I'm confused as to how the water is able to travel up the chromatography paper when its interaction with the stationary phase is strong.
Hi Heider. during both paper and thin-layer chromatography, solvents migrate up the stationary phase through a phenomenon akin to capillary action (the same reason you see a convex meniscus when water is placed in a narrow cylinder). Solvent molecules have an attraction to both the paper and other solvent molecules, so they 'drag' one another along as they move upward, seeking out new stationary phase to interact with.
So a man with the surname Tsvet (which means 'colour' in Russian) invents a chromatography (which means 'colour'+'to write' in Greek). What a wonderful coincidence!
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thanks Prof Davis. u are a great animator
Please dont stop making great videos like this
This is the BEST explanation of how chromatography works. It completely boggles my mind that I'm paying to sit in lectures and be "taught" lab techniques by professors who explain absolutely nothing about how this works when the explanation is so simple. Thank you!
so true!
Thank you, Professor Davis. I hope you live a long and fulfilling life!
What a great, highly educational video!Thanks a lot, Professor Davis!
I love the simplicity of you presentation. I have alot to learn for myself as I tend to make things really complicated
holy crap, this is an unbeleivabal level of explaination. i'm hooked to this site and will recommend to all my students. bloody awesome work. Do keep making more.
+Gayantha Ekanayake Thanks! I work very hard on these videos. I hope you and your students fine them useful!
+ChemSurvival definitely prof. Davis. another thing, this scientist Tsvet looks identical to you. sure u noticed.
Big help for my quiz. You're one of my favorites to learn from. Thanks.
EXCELLENT explanation of the process. Thanks for preparing and posting this video.
Had the most fun chemistry practical today - partly thanks to your cool(srsly!) instruction videos!
Thanks, Daniel. Please share with your colleagues, friends and students. I am always working on new videos to add to my channel at ruclips.net/user/chemsurvival
Thank you so much for sharing such a depth knowledge of the topic.
This is video was GREAT!
awesome, best explaination of TLC priciple
he knows a lot about the science stuff, professor davis explains... OOPS wrong channel. Well you are pretty good teacher! thanks for your lessons, they help a lot (I struggle- biochem major :_D)
haha i thought the same thing
Omg Im crying right now. THANK YOU!!!!!😍
I love how he descried it!
Hi, in paper chromatography, the stationary phase consists of water molecules embedded within the porous structure of the cellulose fibers. Thus, this stationary phase is polar in nature. However, the solvent used normally in separation of say a black ink typically involves the use of water as a solvent which is polar also. Thus, wouldn't the interaction between the solvent (water) and the stationary phase (polar) make the water molecules in the solvent be adsorbed more strongly onto the stationary phase? I'm confused as to how the water is able to travel up the chromatography paper when its interaction with the stationary phase is strong.
Hi Heider.
during both paper and thin-layer chromatography, solvents migrate up the stationary phase through a phenomenon akin to capillary action (the same reason you see a convex meniscus when water is placed in a narrow cylinder). Solvent molecules have an attraction to both the paper and other solvent molecules, so they 'drag' one another along as they move upward, seeking out new stationary phase to interact with.
Very useful video Sir..would be of great help if you could kindly make one on HPLC and other Chromatography techniques..!!!
That has been on my list for a very long time, indeed! Hopefully someday I will find the time!
Pl try and complete one sir..it will be of great help...!!!
So a man with the surname Tsvet (which means 'colour' in Russian) invents a chromatography (which means 'colour'+'to write' in Greek).
What a wonderful coincidence!
Thanks.☺️☺️☺️☺️☺️
Warsow is not Russia...