| Journal Articles: 98 results |
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If You Were a Molecule in a Chromatography Column, What Would You See? John Mattice
To visualize what takes place in a chromatography column, enlarge the molecules to human size and expand the columns to keep the ratio of size of molecule to size of column the same. Using such a model, this article explains how band broadening occurs as a result of resistance to mass transfer, multiple flow paths, and stagnant mobile phase.
Mattice, John. J. Chem. Educ. 2008, 85, 925.
Chromatography |
Gas Chromatography |
HPLC |
Separation Science
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Size Exclusion Chromatography: An Experiment for High School and Community College Chemistry and Biotechnology Laboratory Programs Linda S. Brunauer and Kathryn K. Davis
Describes an experiment in which students use column chromatography to separate and characterize biomolecules, thus expanding their exposure to chromatographic procedures beyond those more commonly employed at the secondary level (e.g., paper or thin-layer chromatography).
Brunauer, Linda S.; Davis, Kathryn K. J. Chem. Educ. 2008, 85, 683.
Biotechnology |
Chromatography |
Enzymes |
Separation Science |
Spectroscopy
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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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Enantioselective Reduction by Crude Plant Parts: Reduction of Benzofuran-2-yl Methyl Ketone with Carrot (Daucus carota) Bits Silvana Ravía, Daniela Gamenara, Valeria Schapiro, Ana Bellomo, Jorge Adum, Gustavo Seoane, and David Gonzalez
Presents the enantioselective reduction of a ketone by crude plant parts, using carrot (Daucus carota) as the reducing agent.
Ravía, Silvana; Gamenara, Daniela; Schapiro, Valeria; Bellomo, Ana; Adum, Jorge; Seoane, Gustavo; Gonzalez, David. J. Chem. Educ. 2006, 83, 1049.
Aldehydes / Ketones |
Biotechnology |
Catalysis |
Chromatography |
Green Chemistry |
Oxidation / Reduction |
Stereochemistry |
Separation Science
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Analysis of the Thickening Agents in Automotive Greases by GC–MS David Mayotte, Craig J. Donahue, and Cheryl A. Snyder
Describes a laboratory procedure for the identification of the thickening agents in lubricating greases by GCMS.
Mayotte, David; Donahue, Craig J.; Snyder, Cheryl A. J. Chem. Educ. 2006, 83, 902.
Applications of Chemistry |
Consumer Chemistry |
Gas Chromatography |
Industrial Chemistry |
Mass Spectrometry |
Separation Science |
Fatty Acids
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Checkerboard Chromatography Charles A. Smith
This hands-on activity allows students to simulate chromatographic simulations using a grid, colored pieces of paper, and a six-sided die. Students observe the separation as it is occurring and perform experiments on flow rate, column length, and mobile phase composition.
Smith, Charles A. J. Chem. Educ. 2004, 81, 384A.
Chromatography |
Instrumental Methods |
Separation Science
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An Improved Method for the Extraction and Thin-Layer Chromatography of Chlorophyll a and b from Spinach Hao T. Quach, Robert L. Steeper, and G. William Griffin
A direct method of extracting plant pigments from spinach leaves into a dry organic solvent is presented. This method avoids liquidliquid extractions and subsequent drying as is found in previously reported methods.
Quach, Hao T.; Steeper, Robert L.; Griffin, G. William. J. Chem. Educ. 2004, 81, 385.
Chromatography |
Natural Products |
Plant Chemistry |
Separation Science |
Thin Layer Chromatography
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Manual Microscale Column Chromatography Pressurization Apparatus Bruce W. Baldwin
Pressurization of a Pasteur pipet for microscale chromatography is simplified by connecting a 20- or 30-mL syringe to the pipet using a length of Tygon tubing. This simple system allows the student to easily dry-pack a column using common chromatography packing materials.
Baldwin, Bruce W. J. Chem. Educ. 2003, 80, 1182.
Chromatography |
Laboratory Equipment / Apparatus |
Separation Science |
Microscale Lab
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Simulating Chromatographic Separations in the Classroom Charles A. Smith and F. Warren Villaescusa
Using this classroom simulation, students develop a set of rules used to investigate the effect of flow rate, column dimension, particle size, and mobile/stationary phase affinity on chromatographic separations. While performing the simulation, the concepts of longitudinal and eddy diffusion are dramatically illustrated.
Smith, Charles A.; Villaescusa, F. Warren. J. Chem. Educ. 2003, 80, 1023.
Chromatography |
Instrumental Methods |
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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Identification of Pharmaceuticals via Computer-Aided Thin Layer Chromatography Anthony J. Macherone Jr. and Theodore J. Siek
This analytical laboratory experiment demonstrates the methodology of TLC in its relation to toxicology and forensic chemistry. It is easily adapted for high school seniors or undergraduates and employs experimental techniques associated with TLC and post-lab data analysis with concomitant introduction of concepts.
Macherone, Anthony J., Jr.; Siek, Theodore J. J. Chem. Educ. 2000, 77, 366.
Forensic Chemistry |
Drugs / Pharmaceuticals |
Toxicology |
Thin Layer Chromatography |
Separation Science
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Chemistry of the Heaviest Elements-One Atom at a Time Darleane C. Hoffman and Diana M. Lee
A 75-year perspective of the chemistry of the heaviest elements, including a 50-year retrospective view of past developments, a summary of current research achievements and applications, and some predictions about exciting, new developments that might be envisioned within the next 25 years.
Hoffman, Darleane C.; Lee, Diana M. J. Chem. Educ. 1999, 76, 331.
Chromatography |
Instrumental Methods |
Isotopes |
Nuclear / Radiochemistry |
Separation Science |
Descriptive Chemistry |
Enrichment / Review Materials |
Atomic Properties / Structure
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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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A Simplified Method for the Microscale Extraction of Pigments from Spinach Kimberley R. Cousins and Kathleen M. Pierson
A method is presented for microscale sample preparation for the thin-layer chromatographic analysis of the pigments in spinach. A commercial vegetable juicer is used for the initial extraction from spinach. This is followed by filtration, liquid/liquid extraction, centrifugation, and evaporation.
Cousins, Kimberley R.; Pierson, Kathleen M. J. Chem. Educ. 1998, 75, 1268.
Chromatography |
Microscale Lab |
Plant Chemistry |
Dyes / Pigments |
Thin Layer Chromatography |
Separation Science
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Chromatographic Separation Techniques for Undergraduates Darwin B. Dahl, John T. Riley, and Thomas K. Green
Over the past several years the Chemistry Department at Western Kentucky University (WKU) has sought to strengthen its undergraduate program departmental through acquisition of FT-NMR, fluorescence, electrochemical, thermal analysis, laser Raman, microscale organic, and polymer laboratory instrumentation; this has enabled the department to build a successful undergraduate program.
Dahl, Darwin B.; Riley, John T.; Green, Thomas K. J. Chem. Educ. 1998, 75, 1209.
Separation Science |
Chromatography |
Fourier Transform Techniques |
NMR Spectroscopy |
Raman Spectroscopy |
Electrochemistry |
Photochemistry |
Thermal Analysis |
Microscale Lab
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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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Basic Laboratory Chemistry reviewed by Deborah McCool
Basic Laboratory Chemistry is a series of sixteen programs presenting demonstrations of many processes and experimental techniques used in the chemistry laboratory in both macroscale and microscale. Topics included in the programs are assembling macroscale and microscale apparatus, spectroscopy, chromatography, and procedures such as filtration, extraction, distillation, and titration.
McCool, Deborah. J. Chem. Educ. 1998, 75, 830.
Microscale Lab |
Spectroscopy |
Chromatography |
Separation Science |
Titration / Volumetric Analysis
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Extraction, Isolation, and Characterization of Fullerene C60: A Safe and Reliable Separation Experiment Jamey L. Anderson, Michele A. West, Christopher S. Foote
Appropriate for an advanced high school or introductory college chemistry laboratory, the experiment described here allows students to safely perform organic chemistry techniques in the absence of a fume hood.
Anderson, Jamey L.; West, Michele A.; Foote, Christopher S. J. Chem. Educ. 1997, 74, 311.
Separation Science |
Chromatography
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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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Thin-Layer Chromatography Experiments That Illustrate General Problems in Chromatography M. Lederer, E. Leipzig-Pagani
A number of chromatography experiments using cellulose thin layers and aqueous eluents are proposed to illustrate how chromatography can be used for "pattern recognition" of the inks of felt-tip pens, the principle of displacement chromatography of the constituents of the antiseptic Mercurochrome, salting-out chromatography for the separation of halides, and the impossibility to use chromatography alone as a method of identification.
Lederer, M.; Leipzig-Pagani, E. J. Chem. Educ. 1996, 73, 974.
Chromatography |
Dyes / Pigments |
Thin Layer Chromatography |
Separation Science
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First Day in Organic Lab Christine K. F. Hermann
This experiment is designed to introduce students to the techniques of reflux, distillation, gas chromatography, and the determination of boiling point and melting point during one lab period.
J. Chem. Educ. 1996, 73, 852.
Separation Science |
Gas Chromatography |
Physical Properties |
Qualitative Analysis |
Instrumental Methods
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Use of Gas Chromatography-Mass Spectrometry (GC-MS) in Nonscience Major Course Laboratory Experiments Keith S. Kostecka, Zafra M. Lerman, and Sanford A. Angelos
Our efforts have centered on introducing prospective science communicators (film, video, radio, television, and journalism majors) to science relative to their majors and personal interests. Quality lecture-discussion topics, "mystery"-based laboratory activities have assisted in introducing and/or explaining specific areas of chemistry that attempt to reduce fear of subject matter.
Keith S. Kostecka, Zafra M. Lerman, and Sanford A. Angelos. J. Chem. Educ. 1996, 73, 565.
Nonmajor Courses |
Gas Chromatography |
Mass Spectrometry |
Chromatography |
Forensic Chemistry |
Separation Science
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Determination of Polychlorinated Biphenyls (PCBs) in River and Bay Sediments: An Undergraduate Laboratory Experiment in Environmental Chemistry Using Capillary Gas Chromatography with Electron Capture Detection Susan E. Kegley, Kristen J. Hansen, and Kevin L. Cunningham
This paper briefly discusses the history of PCB use and provides guidelines for finding and evaluating PCB-contaminated sites as a way to interest students by showing them an application of chemistry to the "real world."
Kegley, Susan E.; Hansen, Kristen J.; Cunningham, Kevin L. J. Chem. Educ. 1996, 73, 558.
Water / Water Chemistry |
Gas Chromatography |
Applications of Chemistry |
Separation Science |
Solutions / Solvents
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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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Chromatographic Separation of Plant Pigments Using Sand as the Adsorbant: An Inexpensive Chromatographic Technique Lalitha, Nagubandi
Separating grass pigments using sand as the adsorbant.
Lalitha, Nagubandi J. Chem. Educ. 1994, 71, 432.
Plant Chemistry |
Dyes / Pigments |
Chromatography |
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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Combined ascending-descending paper chromatography McCullough, Thomas; Rocabado, Walter
A modification of paper chromatography that includes both ascending and descending flow using readily available equipment.
McCullough, Thomas; Rocabado, Walter J. Chem. Educ. 1992, 69, 995.
Chromatography |
Separation Science
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Size-exclusion chromatography: Separating large molecules from small McLoughlin, Daniel J.
Description, theory, demonstration, and experimental procedure regarding size-exclusion chromatography.
McLoughlin, Daniel J. J. Chem. Educ. 1992, 69, 993.
Chromatography |
Separation Science
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Separation science and chromatography: A colorful introduction Wigman, Larry S.; Kelsch, Catherine T.
Two-dye separation experiments (extraction and column chromatography) to introduce the concepts of phases, partitioning, equilibrium, plate height, and resolution.
Wigman, Larry S.; Kelsch, Catherine T. J. Chem. Educ. 1992, 69, 991.
Chromatography |
Separation Science |
Gas Chromatography |
Dyes / Pigments
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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
|
Supermarket column chromatography of leaf pigments Kimbrough, Doris R.
Simple and effective method of column chromatography of leaf pigments using chemicals and equipment that can be purchased at most grocery, hardware, and/or drugstores.
Kimbrough, Doris R. J. Chem. Educ. 1992, 69, 987.
Chromatography |
Separation Science |
Plant Chemistry |
Dyes / Pigments
|
Making radial chromatography creative chromatography: For fun flowers on fabrics Becker, Robert; Ihde, John; Cox, Kersti; Sarquis, Jerry L.
Doing chromatographic separations on T-shirts and creating flower patterns on filter paper.
Becker, Robert; Ihde, John; Cox, Kersti; Sarquis, Jerry L. J. Chem. Educ. 1992, 69, 979.
Chromatography |
Separation Science
|
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
|
Constructing a complete temperature-composition diagram for a binary mixture: A new experiment that uses quantitative gas chromatography. Cheng, Ru-Jen; Hsu, Chih-Li; Tsai, Yu-Fang.
Experiment to help students appreciate fractional distillation and a fundamental application of gas chromatography.
Cheng, Ru-Jen; Hsu, Chih-Li; Tsai, Yu-Fang. J. Chem. Educ. 1992, 69, 581.
Gas Chromatography |
Separation Science
|
A sensual separation science experiment: Solvent extraction and chromatographic separation of menthol utilizing various consumer products Furton, Kenneth G.; Perez, Maria I.
Evaluation of the utility of all the commercially available laundry detergents as general purpose column packing for chromatography.
Furton, Kenneth G.; Perez, Maria I. J. Chem. Educ. 1991, 68, 946.
Consumer Chemistry |
Gas Chromatography |
Separation Science |
Surface Science
|
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
|
A simple computerized gas chromatograph Fox, John N.; Shaner, Robert A.
Transforming an Apple computer into a versatile gas chromatograph.
Fox, John N.; Shaner, Robert A. J. Chem. Educ. 1990, 67, 694.
Laboratory Equipment / Apparatus |
Laboratory Computing / Interfacing |
Gas Chromatography |
Separation Science
|
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
|
An integrated first-year laboratory experiment involving synthesis, spectroscopy, and chromatography of metal acetylacetonates Glidewell, Christopher; McKenchnic, James S.
This article presents a comprehensive experiment, involving synthesis, thin-layer chromatography, interpretation of two types of NMR and mass spectra.
Glidewell, Christopher; McKenchnic, James S. J. Chem. Educ. 1988, 65, 1015.
NMR Spectroscopy |
Mass Spectrometry |
Synthesis |
Separation Science |
Thin Layer Chromatography
|
A simple method for purifying silica gel for column chromatography Guarconi, Antonio E.; Ferreira, Victor F.
A quick and efficient way to get maximum use out of silica gel.
Guarconi, Antonio E.; Ferreira, Victor F. J. Chem. Educ. 1988, 65, 891.
Laboratory Equipment / Apparatus |
Laboratory Management |
Chromatography |
Separation Science
|
Analysis of aspartame and its hydrolysis products by thin-layer chromatography Conklin, Alfred R.
Separating and identifying the amino acids found in aspartame.
Conklin, Alfred R. J. Chem. Educ. 1987, 64, 1065.
Thin Layer Chromatography |
Amino Acids |
Food Science |
Separation Science |
Qualitative Analysis
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Countercurrent extraction of ink: A demonstration of the chromatographic mechanism Bricker, Clark E.; Sloop, Gregory T.
A simple system that can demonstrate the significance of discontinuous countercurrent extraction.
Bricker, Clark E.; Sloop, Gregory T. J. Chem. Educ. 1985, 62, 1109.
Separation Science |
Chromatography
|
An inexpensive developing chamber for radial chromatography Gadwood, Robert C.
Design and advantages of a radial chromatography chamber.
Gadwood, Robert C. J. Chem. Educ. 1985, 62, 820.
Laboratory Equipment / Apparatus |
Chromatography |
Separation Science
|
Reverse-phase separation of FD & C dyes using a solvent gradient Ondrus, Martin G.
An impressive separation of FD&C dyes in aqueous solution can be demonstrated with a C18 Sep Pak and a 10-mL disposable syringe.
Ondrus, Martin G. J. Chem. Educ. 1985, 62, 798.
Dyes / Pigments |
Separation Science |
Chromatography
|
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
|
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
|
A science fair display of chromatography of inks Breneman, G. L.; Parker, O. J.
60. Bits and pieces, 23. Solving a chromatography mystery simulated on an Apple II.
Breneman, G. L.; Parker, O. J. J. Chem. Educ. 1985, 62, 410.
Chromatography |
Separation Science |
Dyes / Pigments
|
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
|
An improved method for visualizing TLC plates using iodine Roberbon, John
Mixing iodine with silica gel and pouring it onto a thin layer chromatography plate for faster visualization.
Roberbon, John J. Chem. Educ. 1985, 62, 156.
Thin Layer Chromatography |
Laboratory Management |
Separation Science
|
Chromatography: Use of a microcomputer to introduce laboratory techniques Holdsworth, David K.
54. Bits and pieces, 21. Program to introduce paper, thin-layer, column, and gas-liquid chromatography.
Holdsworth, David K. J. Chem. Educ. 1984, 61, 790.
Chromatography |
Separation Science |
Thin Layer Chromatography
|
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
|
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
|
Lecture experiment in gas-liquid chromatography with a simple gas chromatograph at room temperature Wollrah, Adalbert
Apparatus and method for separating mixtures of pentane / hexane and methyl chloride / carbon tetrachloride.
Wollrah, Adalbert J. Chem. Educ. 1982, 59, 1042.
Chromatography |
Separation Science |
Alkanes / Cycloalkanes
|
Classroom chromatography Bauer, Christopher F.
A classroom demonstration in which students are used to illustrate the operation of a chromatographic column.
Bauer, Christopher F. J. Chem. Educ. 1982, 59, 846.
Chromatography |
Separation Science
|
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
|
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
|
Thin layer chromatographic separation of common analgesics - A consumer experiment Cormier, Russell A.; Hudson, William B.; Siegel, Jay A.
A simple method for determining which analgesics have which ingredients.
Cormier, Russell A.; Hudson, William B.; Siegel, Jay A. J. Chem. Educ. 1979, 56, 180.
Consumer Chemistry |
Chromatography |
Separation Science |
Medicinal Chemistry |
Qualitative Analysis
|
Isolation of dyes for analysis Levinson, Alfred S.
The use of ion exchange resin for the isolation of dyes from beverages, gelatin desserts, and other foods.
Levinson, Alfred S. J. Chem. Educ. 1977, 54, 460.
Separation Science |
Dyes / Pigments |
Chromatography |
Thin Layer Chromatography |
Food Science |
Consumer Chemistry |
Ion Exchange
|
Paper chromatography of carbohydrates Croft, L. R.; Haghighi, S.
A simple detection reagent for carbohydrates.
Croft, L. R.; Haghighi, S. J. Chem. Educ. 1977, 54, 112.
Chromatography |
Separation Science |
Carbohydrates
|
Chromatography on chalk Wollrab, Adalbert
Describes how a variety of mixtures can be separated using a piece of chalk.
Wollrab, Adalbert J. Chem. Educ. 1975, 52, 809.
Chromatography |
Separation Science |
Dyes / Pigments |
Solutions / Solvents
|
A simple gas chromatograph for teaching purposes Wollrab, Adalbert
A simple apparatus for demonstrating the separation of a mixture of pentane and hexane gas.
Wollrab, Adalbert J. Chem. Educ. 1975, 52, 200.
Chromatography |
Gas Chromatography |
Laboratory Equipment / Apparatus |
Separation Science |
Alkanes / Cycloalkanes |
Gases
|
Fiber tip chromatography hints Falkin, Harlan
Suggestions for chromatography paper and method.
Falkin, Harlan J. Chem. Educ. 1973, 50, 448.
Chromatography |
Separation Science |
Laboratory Management |
Dyes / Pigments
|
Fiber tipped pens as a chromatography experiment Kasimer, Philip
Allowing students to develop their own solvent mixtures for separating the constituent dyes in fiber tipped pens.
Kasimer, Philip J. Chem. Educ. 1973, 50, 158.
Chromatography |
Separation Science |
Dyes / Pigments
|
TLC detection of caffeine in commercial products Pavlik, James W.
An introductory experiment that involves the thin layer chromatography detection of caffeine in a variety of familiar pharmaceutical products.
Pavlik, James W. J. Chem. Educ. 1973, 50, 134.
Thin Layer Chromatography |
Chromatography |
Separation Science |
Consumer Chemistry |
Drugs / Pharmaceuticals |
Qualitative Analysis
|
The thin-layer chromatography of drugs. A laboratory experiment Neman, R. L.
Students are introduced to thin layer chromatography, are provided samples known to contain alkaloids and barbiturates, separate the mixtures using tlc, determine the components of their unknowns, and calculate Rf values for the components.
Neman, R. L. J. Chem. Educ. 1972, 49, 834.
Chromatography |
Thin Layer Chromatography |
Separation Science |
Drugs / Pharmaceuticals
|
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
|
Circular chromatography of inks Wan, Alfred S. C.
Circular chromatography provides a very convenient and rapid method for demonstrating the principles of paper chromatography.
Wan, Alfred S. C. J. Chem. Educ. 1972, 49, 335.
Chromatography |
Separation Science |
Dyes / Pigments
|
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
|
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
|
A simple separation and identification of radium D, E, and F. Glasoe, Paul K.
The author provides a modification to general chemistry lab involving a separation and identification of a radium sample.
Glasoe, Paul K. J. Chem. Educ. 1971, 48, 268.
Separation Science |
Chromatography
|
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
|
A simple laboratory experiment on PVP column chromatography Lerner, Joseph
This experiment deals with the separation of three colored biochemicals, two of which are vitamins, the other a protein.
Lerner, Joseph J. Chem. Educ. 1970, 47, 32.
Chromatography |
Separation Science |
Vitamins
|
A versatile and compact chromatographic chamber Lehrfeld, J.
This simple and inexpensive glass chamber facilitates thin-layer chromatography separations of a large number of samples within 5 minutes.
Lehrfeld, J. J. Chem. Educ. 1969, 46, 848.
Laboratory Equipment / Apparatus |
Separation Science |
Thin Layer Chromatography
|
An introduction to chromatography Gaucher, G. M.
The object of this presentation is to serve as a preliminary practical introduction and guide to chromatography.
Gaucher, G. M. J. Chem. Educ. 1969, 46, 729.
Chromatography |
Separation Science |
Thin Layer Chromatography |
Gas Chromatography |
Ion Exchange
|
Modifications of solution chromatography illustrated with chloroplast pigments Strain, Harold H.; Sherma, Joseph
Using plant pigments to demonstrate various chromatographic techniques, including column adsorption, paper adsorption, paper partition, column partition, and thin layer chromatography.
Strain, Harold H.; Sherma, Joseph J. Chem. Educ. 1969, 46, 476.
Chromatography |
Separation Science |
Plant Chemistry |
Dyes / Pigments |
Natural Products |
Thin Layer Chromatography
|
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
|
The use of cellophane sheets for direct reading and recording of Rf values Chortyk, O. T.; Kushnir, I.
Describes the use of cellophane sheets for direct reading and recording of Rf values.
Chortyk, O. T.; Kushnir, I. J. Chem. Educ. 1968, 45, 506.
Chromatography |
Thin Layer Chromatography |
Separation Science
|
A simple sprayer for quantitative thin-layer chromatography Samuels, Stanley
A simple, inexpensive sprayer for chromatographic use that can be constructed by a student as a laboratory project.
Samuels, Stanley J. Chem. Educ. 1968, 45, 438.
Laboratory Equipment / Apparatus |
Thin Layer Chromatography |
Chromatography |
Separation Science
|
Chromatography: Inorganic separations using chalkboard chalk Lauren, Paul M.
This demonstration involves separating several combinations of aqueous ions.
Lauren, Paul M. J. Chem. Educ. 1967, 44, A345.
Chromatography |
Separation Science |
Aqueous Solution Chemistry
|
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
|
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
|
The use of talc as a tlc adsorbent Walsh, Brother Joseph M.
Describes the use of talc as a thin layer chromatography adsorbent, particularly with respect to the separation of flavonoids, sugars, and proteins.
Walsh, Brother Joseph M. J. Chem. Educ. 1967, 44, 294.
Thin Layer Chromatography |
Chromatography |
Separation Science |
Proteins / Peptides |
Carbohydrates
|
Separation by adsorption chromatography: An experiment on a colorless mixture Pine, Stanley H.
Acetophenone and alpha-phenylethanol are separated through adsorption chromatography.
Pine, Stanley H. J. Chem. Educ. 1966, 43, 672.
Chromatography |
Separation Science
|
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
|
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
|
Test tube TLC BeMiller, J. N.
Builds on several earlier articles regarding rapid demonstrations of thin-layer chromatography using test tubes.
BeMiller, J. N. J. Chem. Educ. 1964, 41, 608.
Chromatography |
Separation Science |
Thin Layer Chromatography
|
Chromatography Saurer, J. M.
A stick of soft chalk is used to separate a cadmium and lead nitrate.
Saurer, J. M. J. Chem. Educ. 1963, 40, A535.
Chromatography |
Separation Science
|
TLC separation of ink pigments Druding, Leonard F.
The separation of inks into their component pigments was chosen for its simplicity in illustrating techniques and choice of solvent for thin layer chromatography; it also affords the student the opportunity to visually observe the course of the separation.
Druding, Leonard F. J. Chem. Educ. 1963, 40, 536.
Dyes / Pigments |
Chromatography |
Separation Science |
Thin Layer Chromatography
|
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
|
Thin layer chromatographic separation of leaf pigments: A rapid demonstration Rollins, Charles
Eleven pigment spots can be detected from an extract of grass leaves by a rapid TLC separation on silicic acid.
Rollins, Charles J. Chem. Educ. 1963, 40, 32.
Plant Chemistry |
Dyes / Pigments |
Separation Science |
Chromatography |
Thin Layer Chromatography
|
Separation of plant pigments by thin layer chromatography Anwar, M. H.
Describes a lab activity to separate chloroplast pigments over a thin layer of silicic acid.
Anwar, M. H. J. Chem. Educ. 1963, 40, 29.
Separation Science |
Plant Chemistry |
Thin Layer Chromatography |
Chromatography
|
A chromatographic chamber for the student laboratory Wiggans, Donald S.
The construction of an effective chromatographic tank can be accomplished by means of two beakers.
Wiggans, Donald S. J. Chem. Educ. 1957, 34, 536.
Chromatography |
Separation Science |
Laboratory Equipment / Apparatus
|
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
|
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
|
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
|
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
|
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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