Title Page Chelsea Maksin Organic Chemistry Laboratory 1 Column and Thin Layer Chromatography: The Separation of Spinach Pigments Russ Hoburg 02/15/2012 Abstract The main goal in doing the column and thin layer chromatography was to separate spinach extract into its components based on polarity and then to analyze the components. The separation of the spinach extract was done using the column chromatography with the wet/slurry packing method. Alumina was inserted into the column to act as
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Thin Film is first generated in the 20th Century. With the rapid development of resource and advance scientific knowledge on preparation‚ structure evolution and the properties of thin film‚ more advance and sophisticated thin film are created by preparation devices and method based on advances in vacuum technology[1]. Thin Film is a second generation of solar cells after silicon solar cells. This smart material reacts to temperature variations‚ electricity or magnetic fields or pressure variation
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Oral and Written Workshop - Mrs Nievas Graciela Date: May 23th‚ 2011 Student: Chuichuy‚ D. Nicolás Paper Nº 3 – Describing People - First Draft A Kindly Child Oliver‚ my step son‚ is a young‚ good-hearted and kind boy. I first met him in a book shop years ago where he was forced to steal a handkerchief silk from my pocket; however‚ he was not the one who committed the pickpocket. At first glance you
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Different types of syntactic foregrounding are examined in this essay when applied to poems. There are three poems that are analysed‚ ‘Child’ by Sylvia Plath‚ ‘Women and Children First’ by Ingrid de Kok and ‘Bitter-Berry Daybreak’ by Ingrid Jonker which are used to analyse the terms accentuation‚ creation of hierarchies‚ shifts of accent‚ ambiguity‚ semanticisation and the creation of hierarchical relationships and how they affect literature. Accentuation is evident in all three of the poems. Accentuation
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Micro-extraction of urine and/or stomach contents and analysis by TLC Abstract Thin Layer Chromatography (TLC) is one of the oldest chromatographic techniques used for the identification of compounds and for determination of the presence of trace impurities. The aim of the experiment was to determine two unknown samples (X and Y) by comparing results to the known standard drugs‚ of which there was five‚ using a specific TLC method. The same technique was used for the determination of
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nonrenewable resources of energy and minerals‚ and that the world’s population continues to increase‚ how do you think human societies will adjust in the future? Do we have a resource problem or a population problem (or both)? | | | 5. | Some people think that sustainable development is not a useful concept‚ because it may be impossible to implement—or even to define—in the case of nonrenewable resources. Others think that it is an extremely important concept‚ if only because it makes us think
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Column and Thin Layer Chromatography: The Separation of Spinach Pigment Abstract Spinach extract was separated into fractions containing compounds of similar polarity by column chromatography. Based on solid-liquid phase partitioning‚ this separation technique exploited the different polarity of the compounds in the spinach extract. Three fractions with different colors were obtained. The extract and its fractions were analyzed using thin layer chromatography (TLC). The TLC results showed that
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Title Identification of Analgesic Compounds Using Thin Layer Chromatography Abstract The objective of laboratory experiment six was to identify an unknown analgesic tablet using Thin Layer Chromatography (TLC) analysis. The procedure involved preparing TLC plates‚ solubilizing standard analgesics (ibuprofen‚ aspirin‚ acetaminophen‚ caffeine) and the unknown in isopropyl alcohol (IPA)‚ and developing the plates in acetone. Rf values were calculated for each compound. The unknown tablet showed an Rf
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edge of the lake‚ with part of a downed tree in the shallows half hidden by the bank. Lane A. Dean‚ Jr.‚ and his girlfriend‚ both in bluejeans and button-up shirts. They sat up on the table’s top portion and had their shoes on the bench part that people sat on to picnic or fellowship together in carefree times. They’d gone to different high schools but the same junior college‚ where they had met in campus ministries. It was springtime‚ and the park’s grass was very green and the air suffused with
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explain what the media is‚ how it influences young people ’s body image and in what way it affects young people ’s health. The media is an important aspect of life in our culture. About 95% of people own a Television set and watch an average of 3-4 hours per day. By the end of the last century over 60% of men and 50% of women read a newspaper each day and nearly half of all girls‚ from the age of 7 read a girls magazine each week. In addition‚ people interact with a wide variety of other media such
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