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Showing 1 to 15 of 38 results Save | Export
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Samarasekara, Dulani; Hill, Courtney; Mlsna, Deb – Journal of Chemical Education, 2018
A simple and inexpensive paper chromatography experiment that separates and identifies major organic acids in wine and fruit juices has been developed for introductory organic undergraduate students to teach the basics of chromatography. This experiment reinforces several concepts for students such as compound separation via extraction and…
Descriptors: Organic Chemistry, Science Instruction, Identification, Science Experiments
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Bott, Tina M.; Wan, Hayley – Journal of Chemical Education, 2013
Students sometimes have difficulty grasping the importance of when and how basic distillation techniques, column chromatography, TLC, and basic spectroscopy (IR and NMR) can be used to identify unknown compounds within a mixture. This two-part experiment uses mixtures of pleasant-smelling, readily available terpenoid compounds as unknowns to…
Descriptors: Science Instruction, College Science, Undergraduate Study, Organic Chemistry
Brantley, L. Reed, Sr.; Demanche, Edna L.; Klemm, E. Barbara; Kyselka, Will; Phillips, Edwin A.; Pottenger, Francis M.; Yamamoto, Karen N.; Young, Donald B. – 2003
This booklet presents some activities on chromatography. Directions for preparing leaf pigment extracts using alcohol are given, and paper chromatography and thin-layer chromatography are described as modifications of the basic principles of chromatography. (KHR)
Descriptors: Chemical Analysis, Chemistry, Chromatography, Instructional Materials
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Gros, Natasa; Vrtacnik, Margareta – Journal of Chemical Education, 2005
The design and application of a small-scale portable gas chromatograph for learning of the basic concepts of chromatography is described. The apparatus consists of two basic separable units, which includes a chromatographic unit and an electronic unit.
Descriptors: Chemistry, Scientific Concepts, Laboratory Equipment, Experiential Learning
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Maitland, Pamela D.; Maitland, David P. – Journal of Biological Education, 2002
Explains the basics of chromatography which is used to demonstrate the separation of plant photosynthetic pigments. Reports the results of an evaluative study that explored textbook errors in explaining how chromatography works. (Contains 13 references.) (Author/YDS)
Descriptors: Biology, Chemical Analysis, Chromatography, Higher Education
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Alneyadi, Aysha; Shah, Iltaf; Ashraf, Syed Salman – Biochemistry and Molecular Biology Education, 2019
Active-learning strategies such as undergraduate research courses and course-based undergraduate research experiences (CUREs), which engage students in the practical experiments, have been reported as efficient ways for effective teaching and training of graduating students. Recently, many practical examples have been published in various fields…
Descriptors: Research Projects, Undergraduate Students, Active Learning, Student Research
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Mac Fhionnlaoich, Niamh; Ibsen, Stuart; Serrano, Luis A.; Taylor, Alaric; Qi, Runzhang; Guldin, Stefan – Journal of Chemical Education, 2018
Thin-layer chromatography (TLC) is one of the basic analytical procedures in chemistry and allows the demonstration of various chemical principles in an educational setting. An often-overlooked aspect of TLC is the capability to quantify isolated target compounds in an unknown sample. Here, we present a suitable route to implement quantitative…
Descriptors: Science Instruction, Chemistry, College Science, Undergraduate Study
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Torres y Torres, Janelle L.; Hiley, Shauna L.; Lorimor, Steven P.; Rhoad, Jonathan S.; Caldwell, Benjamin D.; Zweerink, Gerald L.; Ducey, Michael – Journal of Chemical Education, 2015
The Characterization and Analysis of a Product (CAP) project is used to introduce first-semester general chemistry students to chemical instrumentation through the analysis of caffeine-containing beverage products. Some examples of these products have included coffee, tea, and energy drinks. Students perform at least three instrumental experiments…
Descriptors: Science Instruction, College Science, Chemistry, Science Laboratories
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Walters, Rodney R. – Analytical Chemistry, 1985
Supports, affinity ligands, immobilization, elution methods, and a number of applications are among the topics considered in this discussion of affinity chromatography. An outline of the basic principles of affinity chromatography is included. (JN)
Descriptors: Chemical Reactions, Chemistry, Chromatography, College Science
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Binder, Rudolf; Lämmle, Carina – Journal of Chemical Education, 2019
When student projects require an analytical step that is robust and sufficiently selective, high performance thin layer chromatography (HPTLC) is a method to be considered. However, for student laboratories not equipped for HPTLC, sample application as a sharp narrow band is a hurdle. The low eluting power of water on reversed phase plates can be…
Descriptors: Chemistry, Science Instruction, Science Laboratories, Student Projects
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He, Ping; Colon, Luis A.; Aga, Diana S. – Journal of Chemical Education, 2016
A two-part laboratory experiment was designed for upper-level analytical chemistry students to provide hands-on experience in the use of high performance liquid chromatography (HPLC) for separation and inductively coupled plasma mass spectrometry (ICP-MS) for detection. In the first part of the experiment, the students analyze total arsenic in…
Descriptors: Science Instruction, Science Experiments, Laboratory Experiments, Science Laboratories
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Bower, Nathan W.; Blanchet, Conor J. K. – Journal of Chemical Education, 2010
Despite a long history of use across multiple disciplines, analytical pyrolysis is rarely taught in undergraduate curricula. We briefly review some interesting applications and discuss the three types of analytical pyrolyzers available commercially. We also describe a low-cost alternative that can be used to teach the basic principles of…
Descriptors: Computer Assisted Instruction, Interdisciplinary Approach, Undergraduate Study, Science Education
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Gochman, Nathan; And Others – Analytical Chemistry, 1979
A discussion of the basic design and characteristics of gas chromatography-mass spectrometry systems used in clinical chemistry. A comparison of three specific systems: the Vitek Olfax IIA, Hewlett-Packard HP5992, and Du Pont DP-102 are included. (BB)
Descriptors: Biomedical Equipment, Chemical Analysis, Chemistry, Chromatography
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Evans, Steven T.; Huang, Xinqun; Cramer, Steven M. – Chemical Engineering Education, 2010
The commercial simulator Aspen Chromatography was employed to study and optimize an important new industrial separation process, weak partitioning chromatography. This case study on antibody purification was implemented in a chromatographic separations course. Parametric simulations were performed to investigate the effect of operating parameters…
Descriptors: Computer Simulation, Biotechnology, Problem Based Learning, Courses
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Riccio, Daniel; Wood, Derrick C.; Miller, James M. – Journal of Chemical Education, 2008
Headspace (HS) gas chromatography (GC) is commonly used to analyze samples that contain non-volatiles. In 1996, a new sampling technique called single drop microextraction, SDME, was introduced, and in 2001 it was applied to HS analysis. It is a simple technique that uses equipment normally found in the undergraduate laboratory, making it ideal…
Descriptors: Chemistry, Science Instruction, Science Experiments, College Science
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