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Analysis of Peppermint Leaf and Spearmint Leaf Extracts by Thin-Layer ChromatographyLibbie S. W. Pelter, Andrea Amico, Natalie Gordon, Chylah Martin, Dessalyn Sandifer, and Michael W. Pelter In this inquiry-based activity, the usefulness of thin-layer chromatography to visualize the difference between spearmint and peppermint is explored. Pelter, Libbie S. W.; Amico, Andrea; Gordon, Natalie; Martin, Chylah; Sandifer, Dessalyn; Pelter, Michael W. J. Chem. Educ.2008, 85, 133.
Natural Products |
Plant Chemistry |
Thin Layer Chromatography
Let's get the nonscience majors into the lab!Griffin, Roger W., Jr. The author shares his experiences with a successful laboratory course for nonmajors. Experiments which have been carried out include: geometry of molecules, measurements and errors, separation and purification, spectroscopy, chromatography, colored natural products, and dyes. Griffin, Roger W., Jr. J. Chem. Educ.1971, 48, 685.
Nonmajor Courses |
Dyes / Pigments |
Natural Products |
Chromatography |
Separation Science |
Quantitative Analysis |
VSEPR Theory |
Spectroscopy
Other Resources: First 3 results
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.
Chromatography
ChromatographyEd Vitz, John W. Moore A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
