| Journal Articles: 49 results |
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Colorful Column Chromatography: A Classroom Demonstration of a Three-Component Separation Lars V. Heumann
Describes a classroom demonstration for the separation of a ternary mixture consisting of intensely colored compounds using silica gel column chromatography.
Heumann, Lars V. J. Chem. Educ. 2008, 85, 524.
Chromatography |
Separation Science |
Thin Layer Chromatography
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A Simple Experiment in the Separation of a Solid-Phase Mixture and Infrared Spectroscopy for Introductory Chemistry Paul S. Szalay
In this guided-inquiry experiment, a two-component solid mixture of caffeine and ibuprofen is separated through a series of solution extractions and precipitations. The components are then analyzed using IR spectrophotometry to determine how effectively they were separated.
Szalay, Paul S. J. Chem. Educ. 2008, 85, 285.
Acids / Bases |
Drugs / Pharmaceuticals |
IR Spectroscopy |
Qualitative Analysis |
Separation Science |
Solutions / Solvents
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Quantitative Assay for Starch by Colorimetry Using a Desktop Scanner Kurt R. Mathews, James D. Landmark, and Douglas F. Stickle
Here we describe a procedure to produce a standard curve for quantification of starch concentration using colorimetry.
Mathews, Kurt R.; Landmark, James D.; Stickle, Douglas F. J. Chem. Educ. 2004, 81, 702.
Separation Science |
Quantitative Analysis |
Carbohydrates |
Food Science |
Natural Products |
UV-Vis Spectroscopy |
Laboratory Computing / Interfacing |
Laboratory Equipment / Apparatus
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Thin-Layer Electrophoresis Tom Lyons Fisher, Tara Leslie Fitzsimmons, and I. David Reingold
Thin-layer electrophoresis apparatus.
Fisher, Tom Lyons; Fitzsimmons, Tara Leslie; Reingold, I. David. J. Chem. Educ. 2001, 78, 1241.
Amino Acids |
Electrophoresis |
Laboratory Equipment / Apparatus |
Separation Science
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The Write Stuff: Using Paper Chromatography to Separate an Ink Mixture
Using a simple chromatographic technique, paper chromatography, to find out if ordinary black marking pens contain only black ink, or a mixture of colored dyes.
J. Chem. Educ. 2000, 77, 176A.
Chromatography |
Separation Science
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Student Understanding of Chromatography: A Hands-On Approach Robert D. Curtright, Randy Emry, and John Markwell*
This exercise sets up a collaborative activity that challenges students to develop a chromatographic solvent with the appropriate polarity to separate leaf chlorophyll and anthocyanin pigments by TLC. The suggested activity has been tested with both high-school advanced-chemistry students and with undergraduate students in an introductory biochemistry class.
Curtright, Robert D.; Emry, Randy; Markwell, John. J. Chem. Educ. 1999, 76, 249.
Chromatography |
Natural Products |
Separation Science |
Undergraduate Research |
Thin Layer Chromatography
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An Inexpensive Detector for Gas Chromatography Allan L. Smith, Edward J. Thorne, and Wolfgang Nadler
We have developed a low-cost (parts cost approximately $70) detector that can be used in a freshman level class to demonstrate the fundamental principles of gas chromatography (GC). The detector box can be used in a modification of experiments available in the literature which do not enable a quantitative method of analysis. We have used it with success in a freshman class of approximately 450 students in an experiment to separate chlorinated hydrocarbons via GC.
Smith, Allan L.; Thorne, Edward J.; Nadler, Wolfgang. J. Chem. Educ. 1998, 75, 1129.
Laboratory Equipment / Apparatus |
Gas Chromatography |
Separation Science
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Teaching Distillation Knowledge: A Video Film about Distillation Bridging a Gap Between Theory and Practice Martin J. Goedhart, Hanno van Keulen, Theo M. Mulder, Adri H. Verdonk, and Wobbe De Vos
The authors observed that first year students hardly used their knowledge of phase theory in the design and performance of distillations. They therefore developed a video in which they confront students with the boiling properties of liquid mixtures.
Goedhart, Martin J.; van Keulen, Hanno; Mulder, Theo M.; Verdonk, Adri H.; De Vos, Wobbe. J. Chem. Educ. 1998, 75, 378.
Learning Theories |
Phases / Phase Transitions / Diagrams |
Separation Science |
Liquids |
Physical Properties
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Thin-Layer Chromatography: Four Simple Activities for Undergraduate Students Jamil Anwar, Saeed Ahmad Nagra, Mehnaz Nagi
To simplify the conventional thin-layer chromatography, four TLC exercises are described which are easy to perform in a high school or college laboratory.
Anwar, Jamil; Nagra, Saeed Ahmad; Nagi, Mehnaz. J. Chem. Educ. 1996, 73, 977.
Separation Science |
Laboratory Equipment / Apparatus |
Thin Layer Chromatography
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The ABC's of Chromatography: A Colorful Demonstration. Reynolds, Robert C.; Comber, Robert N.
This demonstration involves the separation of combinations of seven highly colored dyes by thin layer chromatography to help explain separation science while capturing the attention of the audience by spelling words with these dyes.
Reynolds, Robert C.; Comber, Robert N. J. Chem. Educ. 1994, 71, 1075.
Thin Layer Chromatography |
Dyes / Pigments |
Separation Science
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Extraction of FD&C dyes from common food sources: Their separation utilizing column chromatography Bird, E. W.; Sturtevant, Floyd
A simple procedure for the extraction and separation of five FD&C food dyes from a variety of commercial food mixtures using a low pressure column chromatography apparatus.
Bird, E. W.; Sturtevant, Floyd J. Chem. Educ. 1992, 69, 996.
Chromatography |
Separation Science
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A thin-layer and column chromatography experiment adapted for use in secondary schools: A quick, safe, colorful, convenient introduction to two basic techniques Reynolds, Ronald C.; O'Dell, C. Allen
Two quick, safe, and convenient procedures for thin-layer and column chromatography appropriate for the high school classroom.
Reynolds, Ronald C.; O'Dell, C. Allen J. Chem. Educ. 1992, 69, 989.
Chromatography |
Thin Layer Chromatography |
Separation Science |
Dyes / Pigments
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Chromatography of M&M candies Kandel, Marjorie
Paper chromatography separation to detect the presence of yellow #5 (tartrazine) in M&M candies.
Kandel, Marjorie J. Chem. Educ. 1992, 69, 988.
Chromatography |
Separation Science |
Consumer Chemistry |
Dyes / Pigments
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T-shirt chromatography: A chromatogram you can wear Buccigross, Jeanne M.
Two methods for producing T-shirt chromatograms.
Buccigross, Jeanne M. J. Chem. Educ. 1992, 69, 977.
Chromatography |
Separation Science
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Amino acid chromatography: The "best" technique for student labs Helser, Terry L.
Comparisons of linear, conical, and circular chromatograms, as well as media and elutants.
Helser, Terry L. J. Chem. Educ. 1990, 67, 964.
Amino Acids |
Chromatography |
Separation Science
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A convenient method to recover the solvent from halogen-CCl4 mixtures Sabol, Joseph E.; Kurtz, David W.
An alternative to disposal and distillation which is easy to perform, allowing the solvent to be recovered and stored within one hour after the completion of the experiment is presented here.
Sabol, Joseph E.; Kurtz, David W. J. Chem. Educ. 1990, 67, 532.
Solutions / Solvents |
Separation Science |
Laboratory Management
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The separation of cobalt from nickel by anion exchange chromatography Kauffman, George B.; Adams, Matthew L.
The authors have modified other experiments, using "macro" amounts of ions, and have determined the optimum conditions to produce a visually observable demonstration that illustrates several fundamental principles of the general chemistry course.
Kauffman, George B.; Adams, Matthew L. J. Chem. Educ. 1989, 66, 166.
Chromatography |
Separation Science |
Ion Exchange
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Gel electrophoresis in a covered butter dish Hopkins, T. R.; Sreekrishna, K.
The construction and use of a low-cost horizontal gel electrophoresis apparatus.
Hopkins, T. R.; Sreekrishna, K. J. Chem. Educ. 1987, 64, 279.
Electrophoresis |
Separation Science |
Biotechnology
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Gel filtration - An innovative separation technique Blumenfeld, Fred; Gardner, James
Discusses the theory behind gel filtration and a procedure for using this method for separating organic and inorganic molecules.
Blumenfeld, Fred; Gardner, James J. Chem. Educ. 1985, 62, 715.
Separation Science |
Chromatography
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An inexpensive and quick method for demonstrating column chromatography of plant pigments of spinach extract Mewaldt, William; Rodolph, Dawn; Sady, Michael
Constructing a simple column chromatograph from a disposable pipet.
Mewaldt, William; Rodolph, Dawn; Sady, Michael J. Chem. Educ. 1985, 62, 530.
Chromatography |
Dyes / Pigments |
Separation Science
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Separation and identification of commonly used drugs: A thin-layer chromatography experiment for freshman chemistry Bonicamp, Judith M.
Using a simplified and accelerated TLC kit for drug detection.
Bonicamp, Judith M. J. Chem. Educ. 1985, 62, 160.
Separation Science |
Thin Layer Chromatography |
Drugs / Pharmaceuticals
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An inexpensive experiment for the introduction of high performance liquid chromatography Bidlingmeyer, Brian A.; Warren, F. Vincent, Jr.
Separates the food dyes found in grape-flavored Kool-Aid using isocratic and gradient solution methods. [Debut]
Bidlingmeyer, Brian A.; Warren, F. Vincent, Jr. J. Chem. Educ. 1984, 61, 716.
Chromatography |
HPLC |
Separation Science |
Dyes / Pigments
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The extraction of gold and its simulation with copper Bradley, J. D.; Brand, M.; Louli, J. A. M.
The simulation of the extraction of gold by the use of its analog, copper, makes it possible to capitalize on the glamor of gold without sacrificing any chemical principles.
Bradley, J. D.; Brand, M.; Louli, J. A. M. J. Chem. Educ. 1984, 61, 634.
Separation Science |
Metallurgy |
Industrial Chemistry |
Applications of Chemistry |
Oxidation / Reduction |
Metals
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Chlorophyll separation and spectral identification Diehl-Jones, Susan M.
Extracting chlorophyl a and b from spinach and separating them using thin-layer and column chromatography.
Diehl-Jones, Susan M. J. Chem. Educ. 1984, 61, 454.
Separation Science |
Spectroscopy |
Plant Chemistry |
Photosynthesis |
Dyes / Pigments |
Thin Layer Chromatography |
Chromatography
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Isolation, separation and identification of synthetic food colors Dixon, E. A.; Renyk, G.
A simple, inexpensive experiment for the extraction of synthetic dyes permitted in foodstuffs, and their separation and identification using thin-layer chromatography and ultraviolet/visible spectroscopy.
Dixon, E. A.; Renyk, G. J. Chem. Educ. 1982, 59, 67.
Separation Science |
Food Science |
Chromatography |
Thin Layer Chromatography |
Consumer Chemistry |
UV-Vis Spectroscopy |
Qualitative Analysis
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Separation technology: I. Chromatography Mickey, Charles D.
This article covers the development of and the many different types of chromatography available and offers a good overview of the powers of this tool of analytical chemistry.
Mickey, Charles D. J. Chem. Educ. 1981, 58, 997.
Chromatography |
Separation Science
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The electrophoresis of indicators: An analogy to isoenzyme separation Daugherty, N. A.; Lavallee, D. K.
A lecture demonstration that illustrates the principles involved in the separation of isoenzymes but avoids the problems inherent in isoenzyme separations.
Daugherty, N. A.; Lavallee, D. K. J. Chem. Educ. 1979, 56, 353.
Electrochemistry |
Electrophoresis |
Dyes / Pigments |
Enzymes |
Separation Science
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An industrial steam distillation: Separation of rosin and turpentine from pine gum Potter, Frederick S.; Schuerch, Conrad
Procedure for converting a tacky intractable mass - pine gum - into two recognizable and useful materials - a fragrant water-white liquid (turpentine) and a hard amber-colored resin (rosin).
Potter, Frederick S.; Schuerch, Conrad J. Chem. Educ. 1975, 52, 672.
Separation Science |
Natural Products
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Thiocyanato chromium(III) complexes. Separation by paper electrophoresis and estimate of stability constants Larsen, Erik; Eriksen, J.
Differently charged species of thiocyanato chromium(III) complexes are separated by paper electrophoresis.
Larsen, Erik; Eriksen, J. J. Chem. Educ. 1975, 52, 122.
Separation Science |
Coordination Compounds |
Electrophoresis
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Small-scale thin-layer chromatography. Experiments for teaching purposes Brinkman, U. A. Th.; De Vries, G.
Describes a number of rapid thin-layer chromatography separations that can be conveniently used to introduce chromatography in the teaching laboratory.
Brinkman, U. A. Th.; De Vries, G. J. Chem. Educ. 1972, 49, 545.
Thin Layer Chromatography |
Chromatography |
Microscale Lab |
Separation Science
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A simple apparatus for teaching the principles of chromatography Kellomaki, Aarre
A device that follows the elution of electrolytes through liquid column chromatography by continuously measuring the conductivity of the effluent.
Kellomaki, Aarre J. Chem. Educ. 1972, 49, 139.
Chromatography |
Laboratory Equipment / Apparatus |
Separation Science
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Trimyristin from nutmeg Frank, Forrest; Roberts, Theodore; Snell, Jane; Yates, Christy; Collins, Joseph
The author proposes the isolation and saponification of trimytistin from nutmeg as an excellent experiment to introduce general chemistry students to laboratory techniques or for use with the organic chemistry course in which case more techniques an be introduces.
Frank, Forrest; Roberts, Theodore; Snell, Jane; Yates, Christy; Collins, Joseph J. Chem. Educ. 1971, 48, 255.
Natural Products |
Food Science |
Separation Science
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A thin-layer chromatography experiment for general chemistry Lincoln, S.; Pohl, R. A.; Haworth, D. T.
Describes an experiment that can be used to separate the classical groups of inorganic cations thin layer chromatography analysis using microcrystalline cellulose.
Lincoln, S.; Pohl, R. A.; Haworth, D. T. J. Chem. Educ. 1970, 47, 401.
Chromatography |
Separation Science |
Thin Layer Chromatography |
Quantitative Analysis
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Cylindrical thin-layer chromatography Jordan, David
This short note describes the use and advantages of cylindrical thin-layer chromatography.
Jordan, David J. Chem. Educ. 1968, 45, 510.
Chromatography |
Thin Layer Chromatography |
Separation Science |
Dyes / Pigments
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Qualitative analysis with paper chromatography Poonia, N. S.
A spot of an unknown mixture is subjected to radial development, and the circular chromatogram is divided into a number of segments used for the detection of different cations or groups of cations.
Poonia, N. S. J. Chem. Educ. 1967, 44, 477.
Qualitative Analysis |
Chromatography |
Separation Science
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Laboratory demonstration of fractional distillation Coleman, H. M.
The method described here permits a quick analysis of the several distillates by direct visualization of one of the two components of a binary mixture containing toluene and acetone.
Coleman, H. M. J. Chem. Educ. 1967, 44, 476.
Phases / Phase Transitions / Diagrams |
Separation Science
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Test tube and glass rod tlc Ikan, Raphael; Rapaport, Eliezer
Describes the use of test tubes and glass rods coated on their outer surfaces for thin layer chromatography.
Ikan, Raphael; Rapaport, Eliezer J. Chem. Educ. 1967, 44, 297.
Thin Layer Chromatography |
Chromatography |
Separation Science
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Liquid-liquid extraction Joseph-Nathan, P.
Describes how liquid-liquid extraction can be done using commercially available substances and an apparatus of small dimensions that still allows an experiment to be followed visually.
Joseph-Nathan, P. J. Chem. Educ. 1967, 44, 176.
Separation Science |
Liquids |
Laboratory Equipment / Apparatus
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Column chromatography experiment using unknowns Marmor, Solomon
Students are asked to separate an unknown mixture consisting of two colorless solids through column chromatography.
Marmor, Solomon J. Chem. Educ. 1965, 42, 272.
Chromatography |
Separation Science
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Electrophoresis using thin layer materials Criddle, W. J.; Moody, G. J.; Thomas, J. D. R.
Thin layer materials prepared for chromatography are used for electrophoresis.
Criddle, W. J.; Moody, G. J.; Thomas, J. D. R. J. Chem. Educ. 1964, 41, 609.
Electrochemistry |
Electrophoresis |
Separation Science |
Thin Layer Chromatography
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Clathrates: Compounds in cages Hagan, Mary Martinette, B. V. M.
Introduces clathrate compounds and examines some of their uses and applications.
Hagan, Mary Martinette, B. V. M. J. Chem. Educ. 1963, 40, 643.
Molecular Properties / Structure |
Applications of Chemistry |
Separation Science
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TLCVersatile tool Malins, Donald C.; Wekell, John C.
Examines apparatus and techniques, lecture demonstrations, laboratory experiments and general applications associated with thin layer chromatography.
Malins, Donald C.; Wekell, John C. J. Chem. Educ. 1963, 40, 531.
Chromatography |
Thin Layer Chromatography |
Separation Science
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The separation of rare earths: A project for high school chemistry students Powell, J. E.; Spedding, F. H.; James, D. B.
The separation of rare earths on an ion-exchange column is a very interesting and dramatic experiment to perform, since it represents the solution of one of the most formidable chemical separation problems confronting the inorganic chemist.
Powell, J. E.; Spedding, F. H.; James, D. B. J. Chem. Educ. 1960, 37, 629.
Metals |
Transition Elements |
Separation Science |
Ion Exchange
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Separation of Ce144 from Pr144: A radiochemistry demonstration Bradley, Arthur; Adamowicz, Michael
This demonstration/experiment involves the separation of two radioisotopes through filtration of an insoluble precipitate.
Bradley, Arthur; Adamowicz, Michael J. Chem. Educ. 1959, 36, 136.
Isotopes |
Separation Science
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The nature of chromatography Cassidy, Harold G.
Provides a definition of chromatography and a description of gas chromatography.
Cassidy, Harold G. J. Chem. Educ. 1956, 33, 482.
Chromatography |
Separation Science |
Qualitative Analysis |
Gas Chromatography
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A chromatographic demonstration Forss, David A.
Describes a chromatographic demonstration that does not really on flammable and odorous organic solvents.
Forss, David A. J. Chem. Educ. 1955, 32, 306.
Chromatography |
Separation Science
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Apparatus for demonstrating paper chromatography Baker, Philip S.
Presents a very simple and convenient arrangement for demonstrating paper chromatography.
Baker, Philip S. J. Chem. Educ. 1954, 31, 237.
Chromatography |
Laboratory Equipment / Apparatus |
Separation Science
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Paper chromatography for students Blackwell, R. Quentin
Describes a simple method whereby various mixtures can be separated using paper chromatography under a variety of conditions.
Blackwell, R. Quentin J. Chem. Educ. 1953, 30, 614.
Chromatography |
Separation Science
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Introductory experiments in inorganic paper chromatography Surak, John G.; Schlueter, Donald P.
Presents a simple, small-scale method of paper chromatography appropriate for a freshman qualitative-analysis class.
Surak, John G.; Schlueter, Donald P. J. Chem. Educ. 1952, 29, 144.
Chromatography |
Separation Science |
Qualitative Analysis
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