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Showing 31 to 45 of 148 results Save | Export
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Jacques, V.; Hingant, B.; Allafort, A.; Pigeard, M.; Roch, J. F. – European Journal of Physics, 2009
In this paper, we describe two complementary nonlinear spectroscopy methods which both allow one to achieve Doppler-free spectra of atomic gases. First, saturated absorption spectroscopy is used to investigate the structure of the 5S[subscript 1/2] [right arrow] 5P[subscript 3/2] transition in rubidium. Using a slightly modified experimental…
Descriptors: Spectroscopy, Quantum Mechanics, Physics, Lasers
Karasek, F. W. – Research Development, 1977
Describes the present state of the art of instruments in the field of atomic absorption (AA) spectroscopy. (SL)
Descriptors: Atomic Theory, Computers, Laboratory Equipment, Nuclear Physics
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Puignou, L.; Llaurado, M. – Journal of Chemical Education, 2005
An experimental exercise on analytical proficiency studies in collaborative trials is proposed. This practical provides students in advanced undergraduate courses in chemistry, pharmacy, and biochemistry, with the opportunity to improve their quality assurance skills. It involves an environmental analysis, determining the concentration of a…
Descriptors: Science Laboratories, Chemistry, Pharmacy, Biochemistry
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Slavin, Walter – Analytical Chemistry, 1982
The status of current techniques and methods of atomic absorption (AA) spectroscopy (flame, hybrid, and furnace AA) is discussed, including limitations. Technological opportunities and how they may be used in AA are also discussed, focusing on automation, microprocessors, continuum AA, hybrid analyses, and others. (Author/JN)
Descriptors: Chemical Analysis, Chemistry, College Science, Higher Education
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Meighan, Michelle; MacNeil, Joseph; Falconer, Renee – Journal of Chemical Education, 2008
The relationship between pH and the aqueous solubility of heavy metals is explored by considering the environmental impact of acidic mine drainage. Acid mine drainage is an important environmental concern in many areas of the United States. Associated with coal mining in the East and hard rock mining in the West, the acidity originates primarily…
Descriptors: Mining, Chemistry, Environment, Metallurgy
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Fulghum, J. E.; And Others – Analytical Chemistry, 1989
This review is divided into the following analytical methods: ion spectroscopy, electron spectroscopy, scanning tunneling microscopy, atomic force microscopy, optical spectroscopy, desorption techniques, and X-ray techniques. (MVL)
Descriptors: Chemical Analysis, Chemical Reactions, Chemistry, College Science
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Carvalho, Filomena A.; Freitas, Teresa; Santos, Nuno C. – Advances in Physiology Education, 2015
Atomic force microscopy (AFM) is a useful and powerful tool to study molecular interactions applied to nanomedicine. The aim of the present study was to implement a hands-on atomic AFM course for graduated biosciences and medical students. The course comprises two distinct practical sessions, where students get in touch with the use of an atomic…
Descriptors: Medical Education, Laboratory Equipment, Spectroscopy, Molecular Structure
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Williamson, Mark A. – Journal of Chemical Education, 1989
Discusses a student exercise which requires the optimizing of the charring and atomization temperatures by producing a plot of absorbance versus temperature for each temperature parameter. Notes that although the graphite furnace atomic absorption spectroscopy technique has widespread industrial use, there are no published, structured experiments…
Descriptors: Chemical Analysis, Chemical Reactions, Chemistry, College Science
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Mattson, Bruce M.; And Others – Journal of Chemical Education, 1989
Describes a full day of chemistry fun and competition for high school chemistry students. Notes teams have five students from each high school. Lists five competitive events for each team: titration, qualitative analysis, balancing equations, general chemistry quiz, and quantitative analysis with atomic absorption spectroscopy. (MVL)
Descriptors: Chemical Analysis, Chemical Nomenclature, Chemical Reactions, Chemistry
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Brouwer, Henry – Journal of Chemical Education, 2005
A simple procedure to quickly screen different consumer products for the presence of lead, cadmium, and other metals is described. This screening technique avoids expending a lot of preparation time on samples known to contain low levels of hazardous metals where only samples testing positive for the desired elements need to be analyzed…
Descriptors: Metallurgy, Spectroscopy, Toys, Hazardous Materials
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Mowry, Curtis; Milofsky, Rob; Collins, William; Pimentel, Adam S. – Journal of Chemical Education, 2017
This laboratory introduces students to laser-induced breakdown spectroscopy (LIBS) for the analysis of metals in soil and rock samples. LIBS employs a laser-initiated spark to induce electronic excitation of metal atoms. Ensuing atomic emission allows for qualitative and semiquantitative analysis. The students use LIBS to analyze a series of…
Descriptors: Spectroscopy, Metallurgy, Qualitative Research, Simulation
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Ribaudo, Joseph – Physics Teacher, 2016
Without question, one of the most useful tools an astronomer or physicist can employ to study the universe is spectroscopy. However, for students in introductory physics or astronomy classes, spectroscopy is a relatively abstract concept that combines new physics topics such as thermal radiation, atomic physics, and the wave and particle nature of…
Descriptors: Spectroscopy, Light, Hands on Science, Introductory Courses
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Bretz, Stacey Lowery; Murata Mayo, Ana Vasquez – Journal of Chemical Education, 2018
This study reports the development of a 19-item Flame Test Concept Inventory, an assessment tool to measure students' understanding of atomic emission. Fifty-two students enrolled in secondary and postsecondary chemistry courses were interviewed about atomic emission and explicitly asked to explain flame test demonstrations and energy level…
Descriptors: Chemistry, Science Instruction, Secondary School Science, College Science
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Daugherty, Kenneth E.; Robertson, Les D. – Journal of Chemical Education, 1972
Practical chemical problems in the cement industry are being solved by such techniques as infrared spectroscopy, gas chromatography-mass spectrometry, X-ray diffraction, atomic absorption and arc spectroscopy, thermally evolved gas analysis, Mossbauer spectroscopy, transmission and scanning electron microscopy. (CP)
Descriptors: Cement Industry, Industry, Laboratory Techniques, Problems
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Rittenhouse, Robert C. – Journal of Chemical Education, 2015
The "atoms first" philosophy, adopted by a growing number of General Chemistry textbook authors, places greater emphasis on atomic structure as a key to a deeper understanding of the field of chemistry. A pivotal concept needed to understand the behavior of atoms is the restriction of an atom's energy to specific allowed values. However,…
Descriptors: Science Instruction, Chemistry, Undergraduate Study, College Science
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