Experiment 8. Identification of an Adulterated Herb or Spice by Thin Layer Chromatography (TLC), 246
Click on the title of a resource to view it. To save screen space, only the first 3 resources are shown. You can display more resources by scrolling down and clicking on “View all xx results”.
For the textbook, chapter, and section you specified we found
Assessing Nitration Products of Benzene Derivatives Using TLC AnalysisRita K. Hessley Thin layer chromatography is applied to an earlier published, guided discovery experiment using GCMS analyses to identify isomers formed by the nitration of mono-substituted benzenes. Hessley, Rita K. J. Chem. Educ.2008, 85, 1623.
Thin Layer Chromatography |
Gas Chromatography |
Mass Spectrometry |
Aromatic Compounds
Identification of Secondary Metabolites in Citrus Fruit Using Gas Chromatography and Mass SpectroscopyJean-Michel Lavoie, Esteban Chornet, and André Pelletier Using a simple extraction and a gas chromatograph coupled with a mass spectrometer, this protocol allows students in analytical or organic chemistry to quantify and qualify monoterpenes from the peels of limes, grapefruits, and oranges. Lavoie, Jean-Michel; Chornet, Esteban; Pelletier, André. J. Chem. Educ.2008, 85, 1555.
Alkenes |
Food Science |
Gas Chromatography |
Mass Spectrometry |
Natural Products |
Plant Chemistry |
Qualitative Analysis |
Quantitative Analysis
Borohydride Reduction of EstroneAnimesh Aditya, David E. Nichols, and G. Marc Loudon This experiment presents a guided-inquiry approach to the demonstration of diastereoselectivity using chiral hindered ketones that undergo facile reduction with sodium borohydride. The resulting diastereomeric estradiols can be analyzed and differentiated by thin-layer chromatography and melting point. Aditya, Animesh; Nichols, David E.; Loudon, G. Marc. J. Chem. Educ.2008, 85, 1535.
Chromatography, Thin Layer (ChemPages Lab)John W. Moore, Jerrold J. Jacobsen, Joe L. March Chromatography, Thin Layer: this is a resource in the collection "ChemPages Laboratory Resources". Thin layer chromatography (TLC) is a method for identifying substances and testing the purity of compounds. TLC is a useful technique because it is relatively quick and requires small quantities of material. The ChemPages Laboratory Resources are a set of web pages that include text, images, video, and self check questions. The topics included are those that are commonly encountered in the first-year chemistry laboratory. They have been put together for use as both a pre-laboratory preparation tool and an in-laboratory reference source.
Chromatography |
Thin Layer Chromatography |
Laboratory Equipment / Apparatus
Chromatography, Paper (ChemPages Lab)John W. Moore, Jerrold J. Jacobsen, Joe L. March Chromatography, Paper: this is a resource in the collection "ChemPages Laboratory Resources". Paper chromatography is one method for testing the purity of compounds and identifying substances. Paper chromatography is a useful technique because it is relatively quick and requires small quantities of material. The ChemPages Laboratory Resources are a set of web pages that include text, images, video, and self check questions. The topics included are those that are commonly encountered in the first-year chemistry laboratory. They have been put together for use as both a pre-laboratory preparation tool and an in-laboratory reference source.
Chromatography
Principles of Gel Permeation ChromatographyGuilherme Andrade Marson, Bayardo Baptista Torres Principles of Gel Permeation Chromatography presents the principles of gel permeation chromatography (GPC) for students in introductory undergraduate courses of chemistry and biochemistry. These principles are presented in four sections: Introduction, Real Lab, Virtual Lab, and Microscopic Model. The Introduction and Real Lab sections present a brief view of the basic experimental apparatus typically used in laboratory GPC in order to provide a concrete connection of the real process of separation. The basic elements of column chromatography, emphasizing the stationary and mobile phases, are presented in the Introduction, followed by a sequence of pictures and texts describing major steps in GPC analysis in the Real Lab section. The Virtual Lab section is a simulator. Three samples are available for a virtual GPC experiment: sample 1, containing hemoglobin; sample 2, containing methylene blue; and sample 3, containing both methylene blue and hemoglobin. Each sample undergoes a virtual separation run, which is dynamically represented in three ways in the software: a virtual column, the collected fractions, and a virtual chromatogram. This threefold representation allows the simultaneous view of key aspects of the process to demonstrate the correlation between the experimental procedure and the resulting chromatogram.
