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Journal Articles: 37 results
Illustrating the Concepts of Isotopes and Mass Spectrometry in Introductory Courses: A MALDI-TOF Mass Spectrometry Laboratory Experiment  Nancy Carter Dopke and Timothy Neal Lovett
This article describes a matrix-assisted laser desorption/ionization (MALDI) mass spectrometry experiment in which students prepare peptide samples for mass analysis and then collect and analyze mass spectral data. The lab provides hands-on experience with research instrumentation and reinforces the concepts of isotopes, molecular masses, and molecular formulas.
Dopke, Nancy Carter; Lovett, Timothy Neal. J. Chem. Educ. 2007, 84, 1968.
Isotopes |
Mass Spectrometry |
Proteins / Peptides
Understanding Isotopic Distributions in Mass Spectrometry  Juris Meija
Offers a simple graphical tool for obtaining complex isotopic distributions.
Meija, Juris. J. Chem. Educ. 2006, 83, 1761.
Mass Spectrometry |
Isotopes |
Chemometrics
Measurement of the Isotopic Ratio of 10B/11B in NaBH4 by 1H NMR  Murray Zanger and Guillermo Moyna
A simple and remarkably accurate method for estimating the isotopic ratio between 10B and 11B through the use of 1H nuclear magnetic resonance (NMR) spectroscopy is presented. The experiment relies on the splitting caused by 10B (I = 3) and 11B (I = 3/2) on the 1H signal of a proton directly bound to boron, a phenomenon readily observed on an aqueous sample of NaBH4. In combination with a brief lecture or prelaboratory presentation, this laboratory can serve to introduce students to magnetic properties as well as theoretical and experimental aspects of NMR spectroscopy as early as the freshman-level chemistry.
Zanger, Murray; Moyna, Guillermo. J. Chem. Educ. 2005, 82, 1390.
Instrumental Methods |
Magnetic Properties |
NMR Spectroscopy |
Atomic Properties / Structure |
Isotopes
How Radioactive Is Your Banana?  David W. Ball
This exercise uses a banana to illustrate the level of radioactivity (in this case, from K-40) in an everyday object.
Ball, David W. J. Chem. Educ. 2004, 81, 1440.
Food Science |
Nuclear / Radiochemistry |
Isotopes
A Strategy for Incorporating Hands-On GC-MS into the General Chemistry Lecture and Laboratory Courses  Perry C. Reeves and Kim L. Pamplin
Students use the GC-MS to obtain spectra of the various halobenzenes. This vividly illustrates the differences in isotopic distributions of the halogens and the complications these differences present in calculating molar masses of compounds. The isotopic distribution of iron is then obtained from the mass spectrum of Fe(CO)5, and the students calculate the atomic mass of iron from this data.
Reeves, Perry C.; Pamplin, Kim L. J. Chem. Educ. 2001, 78, 368.
Chromatography |
Isotopes |
Mass Spectrometry |
Gas Chromatography |
Aromatic Compounds
No, the Molecular Mass of Bromobenzene Is Not 157 amu: An Exercise in Mass Spectrometry and Isotopes for Early General Chemistry  Steven M. Schildcrout
Even with no background in bonding and structure, students can successfully interpret the output of a modern research instrument. They learn to identify an isotope pattern, assign chemical formulas to ions giving mass spectral peaks, calculate an average atomic weight (for bromine) from measured isotopic abundances, and write balanced equations for ion fragmentation reactions.
Schildcrout, Steven M. J. Chem. Educ. 2000, 77, 1433.
Isotopes |
Mass Spectrometry |
Atomic Properties / Structure |
Molecular Properties / Structure
A Different Approach to a 3-D Periodic System Including Stable Isotopes  Alexandru T. Balaban
On a Periodic System with the two dimensions represented by Periods and Columns, one may stack each stable nuclide of an element along the third dimension. This "Downtown Area" representation is helpful for interconnecting concepts of: element, isotope or nuclide (stable vs. radioactive), atomic weight, atomic number, mass number.
Balaban, Alexandru T. J. Chem. Educ. 1999, 76, 359.
Periodicity / Periodic Table |
Isotopes |
Nuclear / Radiochemistry
Nucleogenesis! A Game with Natural Rules for Teaching Nuclear Synthesis and Decay  Donald J. Olbris and Judith Herzfeld
Nucleogenesis! is a simple and engaging game designed to introduce undergraduate physics or chemistry students to nuclear synthesis and decay by simulation of these processes. By playing the game, students become more familiar with nuclear reactions and the "geography" of the table of isotopes.
Olbris, Donald J.; Herzfeld, Judith. J. Chem. Educ. 1999, 76, 349.
Isotopes |
Nuclear / Radiochemistry |
Nonmajor Courses
Chemistry of the Heaviest Elements-One Atom at a Time  Darleane C. Hoffman and Diana M. Lee
A 75-year perspective of the chemistry of the heaviest elements, including a 50-year retrospective view of past developments, a summary of current research achievements and applications, and some predictions about exciting, new developments that might be envisioned within the next 25 years.
Hoffman, Darleane C.; Lee, Diana M. J. Chem. Educ. 1999, 76, 331.
Chromatography |
Instrumental Methods |
Isotopes |
Nuclear / Radiochemistry |
Separation Science |
Descriptive Chemistry |
Enrichment / Review Materials |
Atomic Properties / Structure
Radioactivity in Everyday Life  S. G. Hutchison, F. I. Hutchison
This paper discusses the terminology appropriate to radiation exposure and dose, the three sources of natural background radiation (cosmic radiation, cosmogenic radiation, and terrestrial radiation), and several radioactive isotopes that are significant contributors to the radiation exposure received by individuals.
Hutchison, S. G.; Hutchison, F. I. J. Chem. Educ. 1997, 74, 501.
Learning Theories |
Nuclear / Radiochemistry |
Isotopes |
Consumer Chemistry
Dramatizing isotopes: Deuterated ice cubes sink   Ellis, Arthur B.; Adler, Edward A.; Juergens, Frederick H.
The authors describe a safe, striking demonstration of the effect of isotopic substitution.
Ellis, Arthur B.; Adler, Edward A.; Juergens, Frederick H. J. Chem. Educ. 1990, 67, 159.
Water / Water Chemistry |
Isotopes
Predicting nuclear stability using the periodic table  Blanck, Harvey F.
Develops several empirical rules to use with the periodic table as an aid to recalling those nuclides that are stable.
Blanck, Harvey F. J. Chem. Educ. 1989, 66, 757.
Nuclear / Radiochemistry |
Periodicity / Periodic Table |
Isotopes
Radioactive dating: A method for geochronology  Rowe, M. W.
The discovery of radioactivity, radioactive dating, and various dating methods.
Rowe, M. W. J. Chem. Educ. 1985, 62, 580.
Geochemistry |
Nuclear / Radiochemistry |
Isotopes |
Mass Spectrometry
Nuclear synthesis and identification of new elements  Seaborg, Glenn T.
Review of descriptive terms, nuclear reactions, radioactive decay modes, and experimental methods in nuclear chemistry.
Seaborg, Glenn T. J. Chem. Educ. 1985, 62, 392.
Nuclear / Radiochemistry |
Nomenclature / Units / Symbols |
Isotopes
It's beanium!!   Miller, Gregory C.
Pinto, navy, and blackeye beans can be used to help students develop a macroscopic understanding of how isotopes are calculated.
Miller, Gregory C. J. Chem. Educ. 1981, 58, 507.
Isotopes
The case of the isotopic artist  O'Connor, Rod
A problem regarding the decay of isotopes in pigments used to determine an art forgery.
O'Connor, Rod J. Chem. Educ. 1980, 57, 271.
Isotopes |
Nuclear / Radiochemistry |
Applications of Chemistry |
Dyes / Pigments
Elemental evolution and isotopic composition  Rydberg, J.; Choppin, G. R.
Reviews elemental abundances and the processes of elemental creation.
Rydberg, J.; Choppin, G. R. J. Chem. Educ. 1977, 54, 742.
Astrochemistry |
Periodicity / Periodic Table |
Atomic Properties / Structure |
Isotopes |
Nuclear / Radiochemistry |
Geochemistry
What is an element?  Kolb, Doris
Reviews the history of the discovery, naming, and representation of the elements; the development of the spectroscope and the periodic table; radioactive elements and isotopes; allotropes; and the synthesis of future elements.
Kolb, Doris J. Chem. Educ. 1977, 54, 696.
Periodicity / Periodic Table |
Nuclear / Radiochemistry |
Nomenclature / Units / Symbols |
Isotopes
Questions [and] Answers  Campbell, J. A.
193-197. Five biochemical questions and their answers.
Campbell, J. A. J. Chem. Educ. 1975, 52, 457.
Enrichment / Review Materials |
pH |
Isotopes |
Water / Water Chemistry
Questions [and] Answers  Campbell, J. A.
Five questions requiring an application of basic chemical principles.
Campbell, J. A. J. Chem. Educ. 1972, 49, 328.
Enrichment / Review Materials |
Applications of Chemistry |
Nuclear / Radiochemistry |
Thermodynamics |
Mass Spectrometry |
Isotopes
Isotopy. A general chemistry experiment  Ehlert, Thomas C.
The author describes an inexpensive paper-and-pencil experiment which has been used successfully as the first experiment in an introductory course for nonmajors.
Ehlert, Thomas C. J. Chem. Educ. 1971, 48, 273.
Nonmajor Courses |
Isotopes
Chemical queries. Especially for introductory chemistry teachers  Young, J. A.; Malik, J. G.; Choppin, Gregory R.; Young, J. P.
(1) Is there more to nuclear stability than only the neutron to proton ration? - answer by Choppin. (2) What are the products generated by the electrolysis of molten potassium nitrate with stainless steel electrodes? - answer by Young.
Young, J. A.; Malik, J. G.; Choppin, Gregory R.; Young, J. P. J. Chem. Educ. 1970, 47, 73.
Nuclear / Radiochemistry |
Isotopes |
Atomic Properties / Structure |
Electrochemistry
Stable isotopes of the atmosphere  Eck, C. F.
This article briefly presents the composition of air, the discovery of isotopes, their concentration in air, and reviews their current enrichment status.
Eck, C. F. J. Chem. Educ. 1969, 46, 706.
Atmospheric Chemistry |
Isotopes |
Nuclear / Radiochemistry
Radioisotope generators for introductory laboratory use  Crater, H. L.; Macchione, J. B.; Gemmill, W. J.; Kramer, H. H.
Describes the use of simple radioisotope generators in 23 different experiments involving nuclear theory.
Crater, H. L.; Macchione, J. B.; Gemmill, W. J.; Kramer, H. H. J. Chem. Educ. 1969, 46, 287.
Nuclear / Radiochemistry |
Isotopes |
Laboratory Equipment / Apparatus
A kinetics experiment for first year chemistry  Shaefer, William P.
The exchange of iodine atoms between organic and inorganic iodides serves as a kinetics experiment for first year chemistry.
Shaefer, William P. J. Chem. Educ. 1964, 41, 558.
Kinetics |
Isotopes |
Rate Law
Dating of uranium minerals by the specific radioactivity of lead  Fairhall, A. W.
This paper discusses a method for estimating the age of a uranium mineral without recourse to elaborate mass-spectrometric techniques and presents an experimental procedure for doing so.
Fairhall, A. W. J. Chem. Educ. 1963, 40, 626.
Nuclear / Radiochemistry |
Isotopes |
Geochemistry
Radioisotope demonstration of common ion effect on solubility  Roig, E.; Rieckehoff, I. C.; Russo, G. S.; Curet, J. D.
This paper reports a direct demonstration of the effect of common ion concentration on the solubility of a uni-univalent salt, thallium(I) chloride.
Roig, E.; Rieckehoff, I. C.; Russo, G. S.; Curet, J. D. J. Chem. Educ. 1961, 38, 350.
Aqueous Solution Chemistry |
Precipitation / Solubility |
Nuclear / Radiochemistry |
Isotopes
Incorporating radioisotope techniques into the chemistry curriculum  Radin, Norman S.
Presents a list of radioisotope experiments suitable for a wide range of different domains and levels in chemistry.
Radin, Norman S. J. Chem. Educ. 1961, 38, 344.
Nuclear / Radiochemistry |
Isotopes
Nuclear and radiochemistry in the curriculum in general chemistry  Garrett, A. B.
The author summarizes how he integrates nuclear and radiochemistry into the general chemistry curriculum.
Garrett, A. B. J. Chem. Educ. 1960, 37, 384.
Nuclear / Radiochemistry |
Isotopes
Acceleration of biochemical research by recent analytical developments  Anthony, David S.
The development of several kinds of chromatography and the wide spread availability of isotopes as well as associated counting equipment permitted experimentation in areas that could not previously be explored.
Anthony, David S. J. Chem. Educ. 1959, 36, 540.
Chromatography |
Ion Exchange |
Gas Chromatography |
Isotopes |
Nuclear / Radiochemistry
A half-life experiment for general chemistry students  Smith, W. T.; Wood, J. H.
This paper describes the authors' experiences with the measurement of the half-life of bismuth-210.
Smith, W. T.; Wood, J. H. J. Chem. Educ. 1959, 36, 492.
Nuclear / Radiochemistry |
Isotopes
Separation of Ce144 from Pr144: A radiochemistry demonstration  Bradley, Arthur; Adamowicz, Michael
This demonstration/experiment involves the separation of two radioisotopes through filtration of an insoluble precipitate.
Bradley, Arthur; Adamowicz, Michael J. Chem. Educ. 1959, 36, 136.
Isotopes |
Separation Science
Use of radioisotopes in the college chemistry laboratory  Phillips, David; Maybury, Robert H.
Provides experiments and experiences working with constructed Geiger counters and radioisotopes.
Phillips, David; Maybury, Robert H. J. Chem. Educ. 1959, 36, 133.
Nuclear / Radiochemistry |
Isotopes |
Instrumental Methods |
Qualitative Analysis |
Kinetics
Atomic-weight variations in nature  Boggs, James E.
Atoms of the same element may have different masses (due to isotopic differences) depending on their source.
Boggs, James E. J. Chem. Educ. 1955, 32, 400.
Atomic Properties / Structure |
Nuclear / Radiochemistry |
Isotopes
Naturally occurring radioisotopes  Asimov, Isaac
Examines half-life calculations, long-lived radioactive isotopes, and the formation of short-lived radioactive isotopes.
Asimov, Isaac J. Chem. Educ. 1953, 30, 398.
Nuclear / Radiochemistry |
Isotopes |
Geochemistry
Recent history of the notion of a chemical species  Bulloff, Jack J.
Quantum and nuclear chemistry have challenged the doctrine that chemical elements are homogeneous entities while studies of the structure and stoichiometry of solids invite a change in our ideas of definite proportions in chemical combinations.
Bulloff, Jack J. J. Chem. Educ. 1953, 30, 78.
Nuclear / Radiochemistry |
Isotopes |
Stoichiometry |
Solids
Experiments on radioactivity in the first course in college chemistry  Brown, Charles A.; Rochow, E. G.
Experiments described include the detection and measurement of radioactivity; comparing the penetrative power of beta and gamma radiation; separating thorium from uranium; and determining the half-life of iodine 128.
Brown, Charles A.; Rochow, E. G. J. Chem. Educ. 1951, 28, 521.
Nuclear / Radiochemistry |
Isotopes |
Separation Science