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.
Cleft grafting The stem of the stock is cut across. A 'V' shaped insertion is made at the end of the stock. The scion is cut in shape. The scion is inserted into the 'V'
State the term - neuropsychologists Disorders of speech, language, reading, writing, and mathematical abilities are understood in terms of linguistics and the psychology of lan
What is Risk Risk : A function of the probability of an adverse effect and the magnitude of that effect, consequential to hazard(s) in food.
What are the disadvantages of protozoa
Metabolic Alterations and the Resultant Nutritional Problems/ Clinical Manifestations Associated With Cancer? Several research studies have shown that malignant growth (cancer)
Explain the Economics in Nutrition? We mentioned earlier that nutritional problems affect the productivity of the individual, which, in turn affects the productivity of the nat
Polysaccharides and Oligosaccharides are both parts of carbohydrate molecules, but they vary in complexity and size. The Oligosaccharides are much easier and smaller, according to
You have 200 cells and find 120 in interphase, 57 in prophase, 8 in prometaphase, and 5 in metaphase, 8 in anaphase and 2 in telophase. (None in G0 phase). it takes 18 hours to com
Planning of Nursing Care Prevent and control bleeding. Administer replacement therapy of factor VIII and IX as advised. Educate and support the patient and family.
Patients with heart failure have a high incidence of both symptomatic and asymptomatic arrhythmias. About 10 per cent of patients have syncope or presyncope resulting from ventr
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