Define selectivity - terminologies used in chromatography, Biology

Assignment Help:

Define Selectivity - terminologies used in chromatography?

Selectivity is a measure of preference a stationary phase shows for one solute over another and is expressed as:

       α =   K1/ K2

K1 and K2 are distribution coefficient for two different solutes. For convenience sake, K1 is referred to as slow moving solute.

Selectivity therefore describes relative rates of migration of two solutes and thus is a measurement of zone seperation. The greater the difference between distribution ratios larger is the value of selectivity (α) and hence better is the seperation.


Related Discussions:- Define selectivity - terminologies used in chromatography

Define type of instruments used in spectral techniques, Define Type of Inst...

Define Type of Instruments used in Spectral Techniques? A wide range of instruments are available, possessing a combination of features but there is no rigid classification of

Techniques of open mitral valvotomy , Open Mitral Valvotomy :  Techniqu...

Open Mitral Valvotomy :  Technique: A median stemotomy is done; peri cardium opened and stay sutures taken. After heparinisation ascending aorta is cannulated and then SVC

The glomerular filtrate in comparison to the blood, What is the main transf...

What is the main transformation presented by the glomerular filtrate in comparison to the blood? Glomerular filtrate is the name given to the plasma after it has passed the glo

Discuss about smooth muscles, Smooth muscles These muscles are beyond o...

Smooth muscles These muscles are beyond our control. That means these muscles are controlled by autonomic nervous system. They are non-voluntary muscles. They are found in thin

What are the main risk factors for hypertension, Q. What are the main risk ...

Q. What are the main risk factors for hypertension? The major risks factors for hypertension are tobacco smoking, stress, obesity, sedentary lifestyle and alcoholism.

Bacteria entering the blood system, Briefly describe the principal lines of...

Briefly describe the principal lines of defence against bacteria entering the blood system. A blood clot forms a barrier to entry by bacteria. White cells ingest and kill bacte

How is the excretory system of molluscs characterized, Q. How is the excret...

Q. How is the excretory system of molluscs characterized? Molluscs have one or two pair of spongelike nephridia, similar to kidneys

Social determinants of health - transport, Social Determinants of Health - ...

Social Determinants of Health - Transport Rising worldwide incomes have led to a massive use of automobiles and in particular cars. Cars are seen as a threat to health because

Functions of endosperm, Functions of Endosperm The tissue of young en...

Functions of Endosperm The tissue of young endosperm is rich in food materials and various growth hormones. It regulates the precise mode of embryo development and nourishes

Observation of bumpus, An interesting observation made by an American biolo...

An interesting observation made by an American biologist H.C. Bumpus (1899) provides a good explanation for normalising selection. Bumpus collected some 136 injured house sparrows

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