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Showing 46 to 60 of 244 results Save | Export
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Kohout, Victoria R.; Wooke, Zachary J.; McKee, Andrew G.; Thielges, Megan C.; Robinson, Jill K.; Pohl, Nicola L. B. – Journal of Chemical Education, 2018
Glycoscience continues to be an underrepresented topic in current undergraduate-biochemistry-laboratory curricula. Of the educational laboratories present in this subject area, few introduce students to cutting-edge methods and techniques related to carbohydrates. A multiweek series of experiments is described that highlights a recently published…
Descriptors: Science Instruction, College Science, Undergraduate Study, Biochemistry
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Van Bramer, Scott; Goodrich, Katherine R. – Journal of Chemical Education, 2015
This experiment combines analytical techniques of solid phase microextraction and gas chromatography-mass spectrometry with easily relatable and accessible plant volatile chemistry (floral and vegetative scents of local/available plants). The biosynthesis and structure of these chemicals are of interest in the areas of organic chemistry,…
Descriptors: Science Experiments, Science Activities, Plants (Botany), Chemistry
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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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Mirich, Anne; Miller, Trisha Hoette; Klotz, Elsbeth; Mattson, Bruce – Journal of Chemical Education, 2015
Two gas phase deuterium/hydrogen exchange reactions are described utilizing a simple inexpensive glass catalyst tube containing 0.5% Pd on alumina through which gas mixtures can be passed and products collected for analysis. The first of these exchange reactions involves H[subscript 2] + D[subscript 2], which proceeds at temperatures as low as 77…
Descriptors: Science Instruction, Undergraduate Study, College Science, Chemistry
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Kim, Danny H.; Eckhert, Curtis D.; Faull, Kym F. – Journal of Chemical Education, 2011
Mass spectrometry (MS) is a powerful analytical technique that is now widely used in the chemical, physical, engineering, and life sciences, with rapidly growing applications in many areas including clinical, forensic, pharmaceutical, and environmental fields. The increase in use of MS in both academic and industrial settings for research and…
Descriptors: Chemistry, College Science, Laboratory Experiments, Measurement Techniques
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Flowers, Paul A. – Journal of Chemical Education, 2011
A simple and versatile approach to incorporating basic optical microscopy in the undergraduate instrumental analysis laboratory is described. Attaching a miniature CCD spectrometer to the video port of a standard compound microscope yields a visible microspectrophotometer suitable for student investigations of fundamental spectrometry concepts,…
Descriptors: Video Technology, Chemistry, Science Laboratories, Science Experiments
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Arnold, Randy J.; Arndt, Brett; Blaser, Emilia; Blosser, Chris; Caulton, Dana; Chung, Won Sog; Fiorenza, Garrett; Heath, Wyatt; Jacobs, Alex; Kahng, Eunice; Koh, Eun; Le, Thao; Mandla, Kyle; McCory, Chelsey; Newman, Laura; Pithadia, Amit; Reckelhoff, Anna; Rheinhardt, Joseph; Skljarevski, Sonja; Stuart, Jordyn; Taylor, Cassie; Thomas, Scott; Tse, Kyle; Wall, Rachel; Warkentien, Chad – Journal of Chemical Education, 2011
A multivitamin tablet and liquid are analyzed for the elements calcium, magnesium, iron, zinc, copper, and manganese using atomic absorption spectrometry. Linear calibration and standard addition are used for all elements except calcium, allowing for an estimate of the matrix effects encountered for this complex sample. Sample preparation using…
Descriptors: Chemistry, Spectroscopy, Biochemistry, Nutrition
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Weiss, Dominik J.; Harris, Caroline; Maher, Kate; Bullen, Thomas – Journal of Chemical Education, 2013
Variations in the isotopic composition of elements have been widely used to study earth's climate, biosphere, and interior, and more recently to track the fate of contaminants. Within the broad range of elements that exhibit measureable isotopic variations, metal stable isotopes are increasingly applied across the biological, geological,…
Descriptors: Science Instruction, College Science, Chemistry, Metallurgy
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Gross, Deborah S.; Van Ryswyk, Hal – Journal of Chemical Education, 2014
Electrospray ionization mass spectrometry (ESI-MS) is a powerful tool for examining the charge of proteins in solution. The charge can be manipulated through choice of solvent and pH. Furthermore, solution-accessible, protonated lysine side chains can be specifically tagged with 18-crown-6 ether to form noncovalent adducts. Chemical derivatization…
Descriptors: Science Instruction, Chemistry, Spectroscopy, Science Laboratories
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Kusch, Peter – Journal of Chemical Education, 2014
An experiment for the identification of synthetic polymers and copolymers by analytical pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) was developed and performed in the polymer analysis courses for third-year undergraduate students of chemistry with material sciences, and for first-year postgraduate students of polymer sciences. In…
Descriptors: Chemistry, Science Experiments, Science Laboratories, Hands on Science
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Davis, Eric J.; Pauls, Steve; Dick, Jonathan – Journal of Chemical Education, 2017
Presented is a project-based learning (PBL) laboratory approach for an upper-division environmental chemistry or quantitative analysis course. In this work, a combined laboratory class of 11 environmental chemistry students developed a method based on published EPA methods for the extraction of dichlorodiphenyltrichloroethane (DDT) and its…
Descriptors: Student Projects, Teaching Methods, Active Learning, Chemistry
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Halepas, Steven; Hamchand, Randy; Lindeyer, Samuel E. D.; Bru¨ckner, Christian – Journal of Chemical Education, 2017
A laboratory experiment is described that extracts the tetrapyrrolic teal-colored biliverdin IXa, as its dimethyl ester, from commercially available emu eggshells. The extraction of ~10 mg samples of biliverdin is simple and requires two 3 h lab periods: A two-step acid digestion and liquid-liquid extraction, followed by short silica gel flash…
Descriptors: Animals, Science Instruction, Laboratory Experiments, Chemistry
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Harper, Clare S.; Macdonald, Faith V.; Braun, Kevin L. – Journal of Chemical Education, 2017
In this research-based experiment, students are introduced to the interdisciplinary field of archaeological chemistry by extracting and analyzing lipid residues absorbed in pottery. Reproduction archaeological pottery sherds are prepared by soaking ceramic fragments in individual or combinations of vegetable oils. Students crush and extract the…
Descriptors: Laboratory Experiments, Introductory Courses, Archaeology, Chemistry
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Albright, Jessica C.; Dassenko, David J.; Mohamed, Essa A.; Beussman, Douglas J. – Biochemistry and Molecular Biology Education, 2009
Matrix-assisted laser desorption/ionization (MALDI) mass spectrometry is an important bioanalytical technique in drug discovery, proteomics, and research at the biology-chemistry interface. This is an especially powerful tool when combined with gel separation of proteins and database mining using the mass spectral data. Currently, few hands-on…
Descriptors: Undergraduate Study, Chemistry, Databases, Laboratory Experiments
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Eurich, Chris; Fields, Peter A.; Rice, Elizabeth – American Biology Teacher, 2012
Proteomics is an emerging area of systems biology that allows simultaneous study of thousands of proteins expressed in cells, tissues, or whole organisms. We have developed this activity to enable high school or college students to explore proteomic databases using mass spectrometry data files generated from yeast proteins in a college laboratory…
Descriptors: Biology, Biochemistry, Science Instruction, Databases
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