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Undergraduate Separations Utilizing Flash Chromatography
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Abstract
This article describes the procedures used to carry out four flash chromatography experiments: the isolation of the carotenes, chlorophylls and xanthophylls from a spinach extract; the separation of ß-carotene from tetraphenyl cyclopentadienone; the isolation of (+) and (-) carvone from caraway and spearmint oil; and the purification of benzil from benzoin. Apparatus used is nonbreakable, easy to use, and inexpensive.
Keywords (Audience):
Second-Year UndergraduateKeywords (Domain):
Organic ChemistryKeywords (Pedagogy):
Hands-On Learning / ManipulativesKeywords (Subject):
ChromatographyCiting Articles
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This article has been cited by 8 ACS Journal articles (5 most recent appear below).
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Jessie A. Key, Matthew D. Li, and Christopher W. CairoJournal of Chemical Education2011 88 (1), 98-100Normal-phase chromatography is an essential technique for monitoring chemical reactions, identifying the presence of specific components, as well as the purification of organic compounds. An experiment to facilitate the instruction and understanding of ...
Flash Chromatography: A Novel Pressurization Apparatus
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Jeffrey D. Butler, Wonken Choung, and Mark J. KurthJournal of Chemical Education2010 87 (11), 1265-1265An inexpensive and safe alternative apparatus to pressurize a flash chromatography column is reported. This simple setup utilizes a blood pressure bulb to address the pressurized glassware safety concern of flash chromatography, provide a suitable method ...
Acylation, Diastereoselective Alkylation, and Cleavage of an Oxazolidinone Chiral Auxiliary
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Thomas E. Smith , David P. Richardson , George A. Truran , Katherine Belecki and Megumi OnishiJournal of Chemical Education2008 85 (5), 695An introduction to the concepts and experimental techniques of diastereoselective synthesis using a chiral auxiliary is described. The 4-benzyl-2-oxazolidinone chiral auxiliary developed by Evans is acylated with propionic anhydride under mild conditions ...
Measurement of Iron in Egg Yolk: An Instrumental Analysis Experiment Using Biochemical Principles
Kevin M. Maloney , Emmanuel M. Quiazon and Ramee IndralingamJournal of Chemical Education2008 85 (3), 399Measurement of Iron in Egg Yolk: An Instrumental Analysis Experiment Using Biochemical Principles
Kevin M. Maloney , Emmanuel M. Quiazon and Ramee IndralingamJournal of Chemical Education2008 85 (3), 399The generally accepted method to determine iron content in food is by acid digestion or dry ashing and subsequent flame atomic absorption spectrometry or inductively coupled plasma atomic emission spectrometry. We have developed an experiment that ...
Isolation of Three Components from Spearmint Oil: An Exercise in Column and Thin-Layer Chromatography
Don R. Davies and Todd M. JohnsonJournal of Chemical Education2007 84 (2), 318Isolation of Three Components from Spearmint Oil: An Exercise in Column and Thin-Layer Chromatography
Don R. Davies and Todd M. JohnsonJournal of Chemical Education2007 84 (2), 318Three major components of spearmint oil, (+)-limonene, L-(−)-carvone, and (1R,2R,4R)-dihydrocarveol, are separated by silica gel column chromatography. The separation is monitored by thin-layer chromatography (TLC), with IR analysis employed to verify the ...
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History
- Received: August 03, 2009
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