Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Define about the Column chromatography?
In column chromatography, a tube is filled with the material constituting the stationary phase, plus a solvent (mobile phase). The general adsorbent (stationary phase) used are alumina, silica gel, activated carbon, calcium phosphate and hydroxyapatite. The substances to be separated are dissolved in the smallest possible volume of a suitable solvent and applied on the top of the stationary phase and allowed to enter the column. The chromatogram is then developed by flowing a solvent (the mobile phase) through the column. As different substances move through the column, they separate and appear in the effluent when particular volumes of liquid have passed through the column. The liquid leaving the column (the eluent) is usually collected as discrete fractions, using an automatic collector.
The separated components are then identified by testing aliquots of each fraction by one or a combination of the following methods viz. colorimetry, UV absorption, fluorimetry, scintillation counting, refractive index, spectral diode array system, electrochemical detection, radioimmunoassay and enzyme immunoassay. When automatic fraction collector is used the recorder automatically draws each peak and the area of each peak is proportional to the amount of sample component present in it. The simplest form of column chromatography is adsorption chromatography. Separation of components by this method depends upon differences both in their degree of adsorption by the adsorbent and solubility in the solvent used for separation. These physiochemical factors are governed by the molecular structure of the compound.
Late recurrence of artgirza: This is a reflection of progress of disease in the native coronary arteries distal to the grafts or narrowing or blockage of one or more of the g
what is the chemical reaction of respiration in cockroach?
What is the Still Retorts? Still Retorts are used in canning plants for heating foods in glass containers or different sizes of cans. These retorts are usually cylindrical in s
Standardisation Research of Luria Nebraska There are published manuals for the Luria Nebraska that define the battery in detail and provide information pertinent to validity,
Polyenes: amphotericin b Amphotericin B products are the only polyenes currently available for systemic treatment of fungal infections. Nystatin, another polyene, is only avai
WHY NETWORKING IN HOSPITALS Sharing of data is essential, especially in any kind of hospital setting. For staff and doctors of a hospital, if they have details of patients rea
What are the constituent elements of the blood? The blood is made of a liquid and a cellular part. The fluid part is known as plasma and in it there are several substances, suc
In at least single eukaryote, Tetrahymena, the pre-rRNA molecule holds an intron. Erasing of the intron in running processing of the pre-rRNA does not require the assi
Explain about the Nutrition Security? Food security is a part of the broader concept of nutrition security. A household can be said to be nutritionally secure if it is able to
9. A simple and inexpensive screening method has been developed to identify individuals with HIV infection at routine medical check-ups. To study the sensitivity and specificity, t
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd