{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

3AL-Lecture6 - Chromatography Separation of Different...

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
Chromatography ! Partition ! Adsorption Separation of Different Compounds
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
stationary phase (side view) adsorb compounds onto stationary phase mobile phase TIME Adsorption Chromatography Compounds that have Different Interactions with the Mobile Phase Versus the Stationary Phase can be Separated Compound C Stronger interactions with the mobile phase and/or weak interactions with the stationary phase leads to more time moving with the mobile phase. Compound A Stronger interactions with the stationary phase leads to less time moving with the mobile phase. A A A B B B C C C A A A BB B C C C A C A A B B C C B A B C add solvent A A B B C C C B A
Background image of page 2
Stationary Phases Polar Non-Polar Ionic Si O Si O Si O Si O Si O O O H O O O O O O O O H H ! - ! - ! - ! - ! - ! - ! - ! + ! + ! + silica gel alumina Si O Si O Si O Si O Si O O O O O O O O O O O reverse phase S O O O Na S O O O Na Me 3 N Me 3 N Cl Cl cation exchange anion exchange Al O O O O O O Al O O Al O O O O Al O O O O ! - ! - ! - ! - ! - ! - ! -
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Si O Si O Si O Si O Si O O O H O O O O O O O O H H Si O Si O Si O Si O Si
Background image of page 4
Image of page 5
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}