Ion Exchange Chromatography Week 10 TAG Question 1: Chapter 6-4 of your technique book provides a detailed description of how to run a ion- exchange column. Assume you have a cation-exchange column already prepared and ready to use. Create an outline of no more than 10 steps describing how you will regenerate the column‚ load your sample and collect the hydronium ion released. 1. Open the stopcock at the bottom of the column and allow solution to drain out until the solution level in the
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A simple‚ rapid‚ specific and highly sensitive spectrofluorimetric method has been developed for the quantification of dabigatran etexilate mesylate (DAB) in bulk and capsule dosage form. A linear relationship was found between fluorescence intensity and DAB concentration in the range of 0.01-1.0 μg/ml in DMSO as solvent at an emission wavelength of 391 nm after excitation at 334 nm‚ with a good correlation coefficient (0.989). The detection and quantification limits were found to be 0.005 and 0
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Name _____________________________ Date ____________ Period _______ Completing the Square Day 1 For each expression‚ find the number you would add to make it a perfect square trinomial. Leave fraction answers as improper fractions (no mixed numbers or decimals). Then factor each trinomial. 1. x2 + 10x + _______ 2. y2 – 6y + ¬¬¬¬_______ 3. z2 – 8z + _______ _____________________ _____________________ _____________________ 4. x2 + 12x + _______ 5. x2 – x + _______ 6.
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MCOPS‚ Manipal ANALYTICAL METHODS FOR RESIDUAL SOLVENTS INTRODUCTION: Organic solvents are routinely applied during synthesis of drug substances‚ excipients‚ or during drug product formulation. They are not desirable in the final product‚ mainly because of their toxicity‚ their influence on the quality of crystals of the drug substance and their odor or taste‚ which can be unpleasant for patients. To remove them‚ various manufacturing processes or techniques (usually under
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ANALYSIS OF MOUTHWASH Background Information: Commercial mouthwashes are mixtures of water‚ alcohol‚ dyes‚ flavorings‚ and other compounds. In this experiment‚ you will use gas chromatography to determine the alcohol content of the mouthwash. Since the volumes of alcohol and water are not additive when mixed‚ a calibration curve must be used. It will provide the correction factor needed for alcohol-water mixtures. The calibration curve will be prepared by placing a known amount of alcohol
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Kayla Adkins Forensic Chemistry Exam 2 I have been honest and observed no dishonesty. 1. In specific detail‚ describe a published procedure for the definitive identification of Heroin utilizing gas chromatography-mass spectroscopy (GCMS). Heroin is a white crystalline powder with no odor and a bitter taste. It is a derivative of morphine in that the –OH (hydroxyl group) is replaced by an acetyl group‚ -OCOCH3 and has a molecular formula is C21H23NO5 with a molecular weight of 369.42
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CHE 213-451 11-1-11 Title: Radical Chlorination of 1-Chlorobutane Abstract: The purpose of the lab is to form 4 different dichlorobutanes by reacting chlorine radicals with 1-chlorobutane. This is then analyzed by gas chromatography to determine the experimental abundance of each isomer. Results: 1‚1-dichlorobutane had an experimental abundance of 5.9%‚ 1‚2-dichlorobutane had an experimental abundance of 21.1%‚ 1‚3-dichlorobutane had an experimental abundance of 48.7%‚ 1‚4-dichlorobutane
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magnesium‚ to use the reagent prepared to synthesise a tertiary alcohol (triphenylmethanol) by reacting reagent and ester (methyl benzoate)‚ and the product formed is analyse by infrared spectroscopy (IR)‚ melting point‚ thin layer chromatography (TLC)‚ gas chromatography mass spectrum (GCMS) and finally Nuclear Magnetic Resonance spectroscopy. Introduction Formation of long hydrocarbon chain compound as becomes very useful in organic chemistry synthesis. In 1912‚ Victor Grignard a French chemist
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combined all three sources and represented them as the dependence of the theoretical plate height (HETP) on the mobile phase linear velocity. Originally‚ it was introduced for gas chromatography‚ but it happened that the same physical processes occurs in HPLC‚ and this equation is perfectly fit for liquid chromatography. Multiple path The velocity of mobile phase in the column may vary significantly across the column diameter‚ depending on the particle shape‚ porosity‚ and the whole bed structure
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GM‚ Kriz GS‚ Engel RG. (2011). A Small Scale Approach to Organic Laboratory Techniques. Location: Unknown. Publisher: Mary Finch (August 10‚ 2006). Retrieved November 13‚ 2012‚ from http://www.chem.ucla.edu/~bacher/General/30BL/gc/theory.html Chromatography. Introductory Theory. Retrieved November 13‚ 2012‚ from http://teaching.shu.ac.uk/hwb/chemistry/tutorials/chrom/chrom1.htm
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