Paper Chromatography Terms

Paper Chromatography Terms-57
The radiochemical purity was found to be more than 99% for the Azer spheres in saline and acetone solution.And it was less than 95% for the Azar spheres in saline solution.Paper chromatography with acetone and 0.9% Na Cl was shown to be a simple and quick method for routine quality control of radiopharmaceuticals.

The radiochemical purity was found to be more than 99% for the Azer spheres in saline and acetone solution.And it was less than 95% for the Azar spheres in saline solution.Paper chromatography with acetone and 0.9% Na Cl was shown to be a simple and quick method for routine quality control of radiopharmaceuticals.

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This study developed a type of paper chromatography to determine the radiochemical purity of radioactive microspheres.

Microsphere preparation The present study developed a type of paper chromatography for determination and comparison of the radiochemical purity of radioactive yttrium-90 microspheres produced by sol gel method and different composition 1) TEOS: H, (Az spheres) [17].

These microspheres were subsequently added to a 10 ml vial with 5 ml of saline to form an elution.

These radioactive microspheres were then analyzed to determine their radiochemical purity.

THE AMERICAN HERITAGE® DICTIONARY OF THE ENGLISH LANGUAGE, FIFTH EDITION by the Editors of the American Heritage Dictionaries.

Copyright © 2016, 2011 by Houghton Mifflin Harcourt Publishing Company.Radiochemical purity Paper chromatography was used to determine the radiochemical impurities in the radioactive microspheres.The radiochemical purity of a radiopharmaceutical is defined as the fraction of total activity in the desired chemical form in the sample [18-20].The definition of chromatography is a process of separating out different parts of chemical mixtures onto an absorbent material that can then be individually analyzed because different parts are caught on the material at different rates.Any of various techniques for the separation of complex mixtures that rely on the differential affinities of substances for a mobile (gas or liquid) medium and for a stationary adsorbing (liquid or solid) medium through which they pass, such as paper, gelatin, or silica.These impurities arise from incomplete labeling, breakdown of the labeled products over time caused by instability, and introduction of extraneous labeled ingredients during synthesis.Impurities can cause altered in vivo bio distribution after administration which can result in an unnecessary radiation dose to the patient. 3 chromatography paper sheets were cut into 1 cm × 8 cm strips and placed into empty 10 ml glass pharmaceutical vials.The impurities were calculated by expressing the percentage of activity corresponding to the total activity on the plate.The chromatography spectrums of Azer sphere 1, Azar sphere 1 and Az sphere 1 and those for free Al Azer sphere 2, Azar sphere 2 and Az sphere 2 are shown in Figures 1 and 2.The impurities were calculated by expressing the percentage of activity corresponding to the total activity on the plate (Tables 1 and 2).Table 2: Radiochemical purity of different microspheres in acetone solution.

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