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

What is a pigment, What is a pigment?  Scientifically, a chemical that ...

What is a pigment?  Scientifically, a chemical that can impart colour and is insoluble in the solvent in which it is used, is referred to as a 'pigment'. Well, you would agree

Agro industrial-chemical composition and nutritive values, Chemical Composi...

Chemical Composition and Nutritive Values The nutritional quality of an oil meal protein will be affected by the processing conditions to which it is been exposed. Three major

Determine about the term - copper, Determine about the term - Copper   ...

Determine about the term - Copper   Copper is known to act as an electron carrier in enzymes which bring about oxidation - reduction and regulates respiratory activity in plant

Poultry and duck diseases-fowl pox, Fowl pox Fowl-pox is a highly infec...

Fowl pox Fowl-pox is a highly infectious disease of poultry, especially chickens and turkeys. Pheasants, ducks, geese and guineafowls also suffer from an infection similar to f

Nature of neuropsychological tests, Nature of neuropsychological tests ...

Nature of neuropsychological tests Neuropsychological tests are aids in the neuropsychological examination. The tests calculates specified psychological processes including the

How is the concept of chromosome related to the gene, How is the concept of...

How is the concept of chromosome related to the concept of the gene? A chromosome is a DNA molecule. A chromosome may have several dissimilar genes and also DNA portions tha

Explain adverse effects of famciclovir, Adverse Effects of Famciclovir ...

Adverse Effects of Famciclovir Famciclovir has been generally well tolerated. Headache, nausea and diarrhea have been reported. Like acyclovir, famciclovir has been associated

Assisting in procedure of biopsy, ASSISTING IN PROCEDURE OF BIOPSY Bio...

ASSISTING IN PROCEDURE OF BIOPSY Biopsies are removal of a small piece of tissue for examination under microscope. Such examinations are called hist to pathological examina

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