Define ascending type of paper chromatography, Biology

Assignment Help:

Define ascending type of paper chromatography?

The ascending type consists in dipping the lower end of the paper containing the sample spots into the solvent so that it is above the solvent depth and then allowing it to rise up the paper by capillary action. The mobile phase or solvent moves in the upward direction against the gravitational force. The rate of movement of solvent becomes slower with increasing height which provides enough time for partition equilibrium between the two phases to take place. However the disadvantage in this is that compounds with low Rf values may not separate well.


Related Discussions:- Define ascending type of paper chromatography

Long term potentiation, It is a neural mechanism that plays a role in encod...

It is a neural mechanism that plays a role in encoding of new information. Encoding takes place as a result of changes in the strength of synapses among neurons in neuronal network

Respiration, Can you define respiration in 5 oganisms

Can you define respiration in 5 oganisms

Compare and contrast covalent and ionic bonds, Compare and contrast covalen...

Compare and contrast covalent and ionic bonds in molecules, give an example of each.

Chicken infectious anemia (cia), C h ic k e n infectious anemia (CIA) ...

C h ic k e n infectious anemia (CIA) Chicken infectious anemia virus (CIAV), a member of genus Gyrovirus of the family Circoviridae, is the causative agent of chicken infe

General preventive measures for animals, GENERAL PREVENTIVE MEASURES - ...

GENERAL PREVENTIVE MEASURES - 1.      Infected animal should be immediately isolated and looked after. 2.      The premises should be disinfected whenever there is an outbre

Define factors which may lead to errors in count, Define Factors Which May ...

Define Factors Which May Lead To Errors in Count? There are many factors, which may lead to errors in count. (i) Counts may be low if the agar medium used in the technique d

Bile acid sequestrants for coronary prevention, These are safe and free of ...

These are safe and free of systemic side effects. However, gastrointestinal side effects are common, and compliance is poor. The average LDL decreases by approximately 15 per cent

Blood cells, BLOO D CORPUSCLES (= BLOOD CELLS) - Blood corpuscles are ...

BLOO D CORPUSCLES (= BLOOD CELLS) - Blood corpuscles are of the following three types: Erythrocytes, Leucocytes and Thrombocytes. (A )     Erythrocytes (Red Blood Corpusc

Acrodynamics, ACRODYNAM IC S Division of air in lungs. Measured by sp...

ACRODYNAM IC S Division of air in lungs. Measured by spirometer. 1. Tidal Air (T.A.): Quantity of air taken in or given out in a breath 500 cc. 2. Inspiratory Reserv

Explain in brief about the diseases sleep paralysis, Explain in brief about...

Explain in brief about the diseases Sleep paralysis This is an episode of paralysis in the transition between wakefulness and sleep. The period of paralysis is usually brief bu

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd