INTRODUCTION Plant pigments consist of four main chemicals. These are Chlorophylls‚ The carotenoids‚ Anthocyanin and Betacaine. The aims of this experiment is to separate the plant pigment into different colours using solvents and column chromatography. The hypothesis of this experiment is that this plant pigment from spinach will contain the chlorophyll pigment or may contain the others too. Chlorophyll: Chlorophyll a is the main component of the plant pigments. This is used for the most
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Problem: Why do leaves change color in the fall? Background: Leaves contain many pigments such as chlorophyll b‚ xanthophyll‚ and beta carotene besides chlorophyll a. They are part of the photosystem in the thylakoids. Pigment molecules can be separated by a procedure called chromatography. The procedure uses a special paper and solvent. The chlorophyll molecules adhere to the paper. The solvent molecules move up the paper by capillary action. Each chlorophyll molecule will travel up the paper at
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Experiment 5 Analysis of Plant Pigment Purpose: Chromatography is used for separation. In this case the separation of plant pigments. After placing the plant sample in the column the separation will be easy to see and the samples will be analyzed using VIS spectrophotometry. This is used to isolate and identify the different lipids causing the different pigmentations. Introduction: Lipids are chemically diverse substances found in cells. Lipids are water-insoluble‚ structural components
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Chromatography: How can we separate a mixture? Purpose The chromatography lab is to understand how molecules with similar molecular properties can be separated with paper chromatography. These differences will be interpreted to see the distinction of separate chemical substances. Pre Lab Questions 1. Explain capillary action as it pertains to water and paper. Capillary action makes water draw up the paper. As paper absorbs water mixes with the solutions in the paper. 2. What is the
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provided for. Good luck!!! CHROMATOGRAPHY (By: Mayflor Markusic) KALIKASAN: Everyday Science in Action Volume 4 No. 1; pages 22-24 a) What is chromatography? 1 2 3 4 ____________________________________________________________ ________________ b) Give examples of mixtures which can be separated through chromatography. 4 5 6 7 ________________________________________ ______________________________________ c) How is chromatography done? 4 5 6 7 ________
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Paper chromatography is an important separation technique that depends upon differences in how strongly the dyes are adsorbed onto the paper (stationary phase) and how soluble the dyes are in the developing solvent (mobile phase). In paper chromatography‚ a small amount of the mixture to be separated is placed close to the edge of a piece of paper. The edge of the paper is then immersed in a developing solution. As the developing solution ascends up the paper by capillary action‚ the. components
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The History of Paint Pigments Chem 111-404 April 24‚ 2013 Introduction: This report expresses five different pigments that were formed during chemical reactions. Three out of the total five reactions went through a metathesis‚ or double-replacment reaction. A metathesis reaction can be defined as “a chemical reaction in which an element or radical in one compound exchanges places with another element or radical in another compound.” (Webster). The other two pigments underwent a neutralization
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Search the web. Some interesting sites are listed below. Note that some of these sites go into much more depth than is reasonable for this course. http://en.wikipedia.org/wiki/Chromatography http://ull.chemistry.uakron.edu/analytical/Chromatography/ http://orgchem.colorado.edu/hndbksupport/TLC/TLC.html this is for TLC – similar to paper http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/C/Chromatography_paper.html http://jchemed.chem.wisc.edu/JCESoft/Programs/CPL/Sample/modules/paprchrom/paprchromdesc
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Liquid Chromatography Purpose: The purpose of this lab was to separate substances based on their polarity by using liquid chromatography. Data Table: Red Dye Blue Dye Run#1 Run#2 Run#3 Run#1 Run#2 Run#3 Start of Band(mL) 1.50 2.20 1.00 2.70 3.00 2.00 End of Band(mL) 2.70 3.00 2.00 6.40 5.50 6.00 Beaker Eluant Observations 1 H2O White powder 2 5%isopropyl Red powder 3 28%isopropyl Blue powder 4 70%isopropyl Oily residual Calculations: W = Vend – Vstart
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Paper chromatography Presented by – Miss. Shruti Vilas Kharat. SYBSc / FS13164 History- Paper Chromatography (PC) was first introduced by German scientist Christian Friedrich Schonbein (1865). PC is considered to be the simplest and most widely used of the chromatographic techniques because of its applicability to isolation‚ identification and quantitative determination of organic and inorganic compounds. Definition- Paper chromatography is an analytical method technique for separating and
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