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Showing 61 to 75 of 244 results Save | Export
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Hartzell-Baguley, Brittany; Hipp, Rachael E.; Morgan, Neal R.; Morgan, Stephen L. – Journal of Chemical Education, 2007
An experiment in which gas chromatography-mass spectrometry (GC-MS) is used for latent fingerprint extraction and analysis on glass beads or glass slides is conducted. The results determine that the fingerprint residues are gender dependent.
Descriptors: Chemistry, Laboratory Experiments, Science Experiments, Crime
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Homem, Vera; Alves, Arminda; Santos, Lu´cia – Journal of Chemical Education, 2014
A laboratory application with a strong component in analytical chemistry was designed for undergraduate students, in order to introduce a current problem in the environmental science field, the water contamination by antibiotics. Therefore, a simple and rapid method based on direct injection and high performance liquid chromatography-tandem mass…
Descriptors: Science Instruction, Science Laboratories, Chemistry, Conservation (Environment)
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Harmon, Christopher W.; Mang, Stephen A.; Greaves, John; Finlayson-Pitts, Barbara J. – Journal of Chemical Education, 2010
Electrospray ionization mass spectrometry (ESI-MS) and matrix-assisted laser desorption ionization mass spectrometry (MALDI-MS) have found increasing application in the analysis of biological samples. Using these techniques to solve problems in analytical chemistry should be an essential component of the training of undergraduate chemists. We…
Descriptors: Undergraduate Study, Organic Chemistry, Biochemistry, Lasers
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Pacot, Giselle Mae M.; Lee, Lyn May; Chin, Sung-Tong; Marriott, Philip J. – Journal of Chemical Education, 2016
Gas chromatography-mass spectrometry (GC-MS) and GC-tandem MS (GC-MS/MS) are useful in many separation and characterization procedures. GC-MS is now a common tool in industry and research, and increasingly, GC-MS/MS is applied to the measurement of trace components in complex mixtures. This report describes an upper-level undergraduate experiment…
Descriptors: Spectroscopy, Undergraduate Students, Science Experiments, Laboratory Procedures
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Fisher, Amanda; Sekera, Emily; Payne, Jill; Craig, Paul – Biochemistry and Molecular Biology Education, 2012
In proteomics, complex mixtures of proteins are separated (usually by chromatography or electrophoresis) and identified by mass spectrometry. We have created 2DE Tandem MS, a computer program designed for use in the biochemistry, proteomics, or bioinformatics classroom. It contains two simulations--2D electrophoresis and tandem mass spectrometry.…
Descriptors: Biochemistry, Computer Software, Spectroscopy, Science Instruction
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Owens, Janel E.; Zimmerman, Laura B.; Gardner, Michael A.; Lowe, Luis E. – Journal of Chemical Education, 2016
Analysis of whiskey samples prepared by a green microextraction technique, dispersive liquid-liquid microextraction (DLLME), before analysis by a qualitative gas chromatography-mass spectrometry (GC/MS) method, is described as a laboratory experiment for an upper division instrumental methods of analysis laboratory course. Here, aroma compounds in…
Descriptors: Science Instruction, Science Laboratories, Spectroscopy, Chemistry
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Jurisevic, Mojca; Vrtacnik, Margareta; Kwiatkowski, Marek; Gros, Natasa – Chemistry Education Research and Practice, 2012
The purpose of the study was to determine the relationship between students' motivational orientations and their chemistry achievements and perception of learning within the original case of the hands-on approach to visible spectrometry. A total of 295 students from Polish and Slovenian vocational and technical high schools participated in the…
Descriptors: High School Students, Student Motivation, Student Attitudes, Chemistry
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Thompson, Robert Q. – Journal of Chemical Education, 2008
An advanced analytical chemistry laboratory experiment is described that involves environmental analysis and gas chromatography-mass spectrometry. Students analyze lint from clothes dryers for traces of flame retardant chemicals, polybrominated diphenylethers (PBDEs), compounds receiving much attention recently. In a typical experiment, ng/g…
Descriptors: Chemistry, Laboratory Experiments, Spectroscopy, Environmental Education
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Giarikos, Dimitrios G.; Patel, Sagir; Lister, Andrew; Razeghifard, Reza – Journal of Chemical Education, 2013
Gas chromatography-mass spectrometry (GC-MS) is a powerful analytical tool for detection, identification, and quantification of many volatile organic compounds. However, many colleges and universities have not fully incorporated this technique into undergraduate teaching laboratories despite its wide application and ease of use in organic…
Descriptors: College Science, Spectroscopy, Science Instruction, Organic Chemistry
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Bain, Ryan M.; Pulliam, Christopher J.; Raab, Shannon A.; Cooks, R. Graham – Journal of Chemical Education, 2016
In this laboratory, students perform a synthetic reaction in two ways: (i) by traditional bulk-phase reaction and (ii) in the course of reactive paper spray ionization. Mass spectrometry (MS) is used both as an analytical method and a means of accelerating organic syntheses. The main focus of this laboratory exercise is that the same ionization…
Descriptors: Undergraduate Students, Laboratory Experiments, Organic Chemistry, Hands on Science
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Schwarz, Gunnar; Burger, Marcel; Guex, Kevin; Gundlach-Graham, Alexander; Ka¨ser, Debora; Koch, Joachim; Velicsanyi, Peter; Wu, Chung-Che; Gu¨nther, Detlef; Hattendorf, Bodo – Journal of Chemical Education, 2016
A public demonstration of laser ablation inductively coupled plasma mass spectrometry (LA-ICPMS) for fast and sensitive qualitative elemental analysis of solid everyday objects is described. This demonstration served as a showcase model for modern instrumentation (and for elemental analysis, in particular) to the public. Several steps were made to…
Descriptors: Outreach Programs, Demonstrations (Educational), Spectroscopy, Instrumentation
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Kleber, Jörg; Chen, Yi-Chun; Michels, Birgit; Saumweber, Timo; Schleyer, Michael; Kähne, Thilo; Buchner, Erich; Gerber, Bertram – Learning & Memory, 2016
Synapsin is an evolutionarily conserved presynaptic phosphoprotein. It is encoded by only one gene in the "Drosophila" genome and is expressed throughout the nervous system. It regulates the balance between reserve and releasable vesicles, is required to maintain transmission upon heavy demand, and is essential for proper memory function…
Descriptors: Associative Learning, Genetics, Scores, Short Term Memory
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Wells, Gary; Haaf, Michael – Journal of Chemical Education, 2013
Inspired in part by Chemistry Collaborations, Workshops, and Community of Scholars workshops, the Chemistry and Art course offered at Ithaca College is team-taught by a chemist and an art historian, underscoring the complementary nature of the two disciplines. The course, populated primarily by nonscience majors, highlights the importance of using…
Descriptors: Science Instruction, College Science, Undergraduate Study, Art Products
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Armenta, Sergio; de la Guardia, Miguel – Journal of Chemical Education, 2011
Green analytical chemistry principles were introduced to undergraduate students in a laboratory experiment focused on determining the mercury concentration in cow and goat milk. In addition to traditional goals, such as accuracy, precision, sensitivity, and limits of detection in method selection and development, attention was paid to the…
Descriptors: Undergraduate Students, Chemistry, Laboratory Experiments, Food
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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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