5.05 Ink Chromatography Basic Lab Components Background Information and Research: 1. Paper chromatography type of method that is used to separate mixtures of substances from a solution. 2. There are many uses for paper chromatography‚ especially concerning the fields of chemistry and biology. One use is to allow scientists to detect any sort of contaminants is rainwater. Another use is to identify clues at a crime scene such as blood‚ ink‚ or drugs. However‚ the more common use is to
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Chromatography: Separating Mixtures Introduction: Magic marker inks are often mixtures of several compounds. Paper chromatography is a common method of separating various components of a mixture. After separation‚ you can observe the different colors that make up a particular color of magic marker ink. You can also calculate a ratio Rf‚ which compares how far each compound traveled to how far each solvent (substance that dissolves another substance) traveled during the experiment.
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Introduction Juicing is a great way to integrate fruits and vegetables into your diet‚ especially if you do not like to eat whole fruits and vegetables. It can help you meet the daily recommendations for these foods as well as allow you to consume a wide variety of fruits and vegetables in a tasty way. Juicing is usually done with a machine which turns raw fruits and vegetables into liquid and pulp. The machine chops the fruits and vegetables into tiny pieces and spins them‚ separating the juice
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W. (1987)‚ The spectral distribution of radiation in two neotropical rainforests. Biotropica‚ 19‚ 161-166 Melis‚ A.‚ Spangfort‚ M.‚ Andersson‚ B. (1987)‚ Light-absorption and electron-transport balance between photosystems II and photosystem I in spinach chloroplasts. Photochemsitry and Photobiology‚ 45‚ 129-136 Oren-Shamir‚ M.‚ Gussakovsky‚ E.E.‚ Shpiegel‚ E.‚ Nissim-Levi‚ A.‚ Ratner‚ K.‚ Ovadia‚ R.‚ Giller‚ Y.E.‚ Shahak‚ Y. (2001)‚ Coloured shade nets can improve the yield and quality of green decorative
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Component Replacement (GCR) are techniques used in the separation of color for reproduction on a four color printing press. The two processes are different so we will discuss them separately. UCR Theoretically‚ when all the process colors cyan‚ magenta‚ and yellow are printed on the same piece of paper‚ they should absorb all the colors reflected from the surface of the paper and thus create black. However because of the nature of the pigments used‚ the combination of equal amounts of the three
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PATHOPHYSIOLOGY Age- related macular degeneration (AMD)‚ a chronic‚ progressive disorder of the retina‚ is the most common cause of blindness in individuals over the age of 60. The macula is the part of the retina which provides high resolution color vision (Redmond &While 2008). As the macula degenerates‚ individuals lose their central vision and color vision. There are two types of macular degeneration: wet‚ or choroidal neovascularization and dry‚ or nonneovascular . Dry AMD is the more
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SYNOPSIS: *INTRODUCTION *FOOD SOURCES *ORAC IN FOODS *VITAMINS *CAROTENOID TERPENOIDS *FLAVONOIDS *PHENOLIC ACIDS AND THEIR ESTER *OTHER NONFLAVONOID PHENOLICS *POTENTIAL ORGANIC ANTIOXIDANT *ANTIOXIDANT IN FRUITS *CONCLUSION ANTI-OXIDANT INTRODUCTION: *An antioxidant is a molecule that inhibits the oxidation of other molecules. * Oxidation is a chemical reaction that transfers electrons or hydrogen from a substance to an oxidizing agent. Oxidation reactions can produce
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paper chromatography to determine the components of the unknown sample. The mobile phase allowed the compounds to be moved. In identifying the sample‚ the color‚ number of spots and Rf values were observed. Introduction Chromatography is a separation technique based on the partition between two phases‚ mobile and stationary. This technique involves a sample to be dissolve in a solvent (mobile phase) then forced into the stationary mobile. From the two phases‚ the sample would travel along the
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ORGANIC CHEMISTRY ============ Organic Chemistry Laboratory - CH 201 (2010-2011) Experiment 4B Column and Thin-Layer Chromatography of Capsicum Frutescens L. Pigments John Cyril Abanto*‚ Vernalyn Abarintos and Clarice Gail Abella Department of Chemistry‚ College of Science University of Santo Tomas‚ Espana Street‚ Manila 1050 Date Submitted: September‚ 2010 ____________________________________________________________
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Data: Analysis of Drug Store Items Knowns Rf Values Aspirin .91 cm Acetaminophen .85 cm Ascorbic Acid .86 cm Unknown .97 cm Identity of unknown mixture Acetaminophen Analysis of Paprika Pigments Spot Number Rf Color 1 1 Red-orange 2 1 Red-orange Calculations A. Analysis of Paprika picture sample B. Flower sample for paper chromatography Analysis of Drug Store Items Knowns Rf Values= a/f Aspirin 7.0/7.7= .91 cm Acetaminophen
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