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Lapanantnoppakhun, Somchai; Tengjaroensakul, Urai; Mungkornasawakul, Pitchaya; Puangpila, Chanida; Kittiwachana, Sila; Saengtempiam, Jeeraphithak; Hartwell, Supaporn Kradtap – Journal of Chemical Education, 2020
A green chemistry experiment is presented for teaching an undergraduate quantitative analysis/analytical chemistry laboratory class through the use of black tea leaf extract for the determination of iron in supplement tablets. Dried tea leaf is a safe, low cost, and widely available source of natural extract that can be used in place of more toxic…
Descriptors: Chemistry, Science Experiments, Spectroscopy, College Science
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Wedlich, Richard C.; Pires, Amanda; Fazzino, Lisa; Fransen, Joseph M. – Journal of Chemical Education, 2013
Laboratories submitting experimental results to the Food and Drug Administration (FDA) or the Environmental Protection Agency (EPA) in support of Good Laboratory Practice (GLP) nonclinical laboratory studies must conduct such work in compliance with the GLP regulations. To consistently meet these requirements, lab managers employ a "divide…
Descriptors: Science Instruction, College Science, Undergraduate Study, Graduate Study
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Hoffman, Adam R.; Britton, Stephanie L.; Cadwell, Katie D.; Walz, Kenneth A. – Journal of Chemical Education, 2011
Students explore the fundamental chemical concepts of vapor pressure and flash point in a real-world technical context, while gaining insight into the contemporary societal issue of biofuels. Lab activities were developed using a closed-cup instrument to measure the flash point of various biodiesel samples. Pre- and post-tests revealed that the…
Descriptors: Fuels, Chemistry, College Science, Scientific Concepts
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Rowland-Goldsmith, Melissa – Biochemistry and Molecular Biology Education, 2009
DNA microarray is an ordered grid containing known sequences of DNA, which represent many of the genes in a particular organism. Each DNA sequence is unique to a specific gene. This technology enables the researcher to screen many genes from cells or tissue grown in different conditions. We developed an undergraduate lecture and laboratory…
Descriptors: Interdisciplinary Approach, Quality Control, Genetics, Laboratories
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Schazmann, Benjamin; Regan, Fiona; Ross, Mary; Diamond, Dermot; Paull, Brett – Journal of Chemical Education, 2009
Quality control (QC) measures are less prevalent in teaching laboratories than commercial settings possibly owing to a lack of commercial incentives or teaching resources. This article focuses on the use of QC assessment in the analytical techniques of high performance liquid chromatography (HPLC) and ultraviolet-visible spectroscopy (UV-vis) at…
Descriptors: Charts, Chemistry, Quality Control, Science Laboratories
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Stock, Naomi L.; Martin, Jonathan W.; Ye, Yun; Mabury, Scott A. – Journal of Chemical Education, 2007
A laboratory experiment that provides students a hands-on introduction to the specific techniques of liquid chromatography-tandem mass spectrometry (LC-MS/MS) and electrospray ionization is presented. The students can thus practice the analytical principles of sample extraction, detection, quantification, and quality control using a fresh fish…
Descriptors: Laboratory Experiments, Quality Control, Animals, Chemistry