<body><script type="text/javascript"> function setAttributeOnload(object, attribute, val) { if(window.addEventListener) { window.addEventListener('load', function(){ object[attribute] = val; }, false); } else { window.attachEvent('onload', function(){ object[attribute] = val; }); } } </script> <div id="navbar-iframe-container"></div> <script type="text/javascript" src="https://apis.google.com/js/platform.js"></script> <script type="text/javascript"> gapi.load("gapi.iframes:gapi.iframes.style.bubble", function() { if (gapi.iframes && gapi.iframes.getContext) { gapi.iframes.getContext().openChild({ url: 'https://www.blogger.com/navbar/752581107199496452?origin\x3dhttp://3n1-combinescience.blogspot.com', where: document.getElementById("navbar-iframe-container"), id: "navbar-iframe" }); } }); </script>
3N1's Combine Science (:
profile
Do show some respect to us when you're here.
This is where our dream begins;D
Failure is an event, Never a person!
3N1! Jiayou!!^^

wishlist
Pass our Chemistry and Physics with Flying colours:D

tagboard

ShoutMix chat widget

exits
3N1:D

flashback
March 2010
April 2010
May 2010

credits
Layout: Kary-yan/Missyan.
Hosts: x o x o x o

Date : Thursday, April 15, 2010
Time : 2:15 PM
Title :

Chromatography a feasible possible method to separate the bucket of mixed paint.

Advantages:
Column chromatography is advantageous over most other chromatographic techniques because it can be used in both analytical and preparative applications.Not only can column chromatography be used to determine the number of components of a mixture, but it can also be used to separate and purify substantial quantities of those components for subsequent analysis. This is in contrast to paper chromatography, which is solely an analytical method.
This analytical method is quick to perform and easy to master.Another advantage of this method is that it requires a relatively small sample and is very inexpensive - a big plus in today's cost-conscious world.

Disadvantages:
With all its advantages and preparative power, column chromatography does have its complications. Properly setting up the column (something that will be done for you prior to experiment) requires some technical skill and manual dexterity, and takes some time. Column chromatography is less foolproof than paper chromatography and requires constant attention while the experiment is being performed: collection vessels must be frequently switched and solvent levels need to be topped up.
Some mixtures are very difficult to separate by paper chromatography; and any species that is not coloured is difficult to observe on the chromatogram.

Types of chromatography:

gas chromatography
paper chromatography
liquid chromatography
thin layer chromatography
ion exchange chromatography
column chromatography

url: http://www.chem.ubc.ca/courseware/154/tutorials/exp3A/columnchrom/
http://www.chem.ubc.ca/courseware/121/tutorials/exp3A/paperchrom/

video of chromatography:http://www.youtube.com/watch?v=uxP9qwpUBBU

By: Ivy_3N1