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Journal Articles: 13 results
A Mass Spectral Chlorine Rule for Use in Structure Determinations in Sophomore Organic Chemistry  Ray A. Gross, Jr.
The number of chlorine atoms, n, is stoichiometrically related to the ratio of peak intensities of the lowest-mass-to-highest-mass molecular ions in ideal molecular-ion clusters displayed in the mass spectra of Br- and Cl-containing compounds. The chlorine rule provides a new tool for use in organic structure determination. A discovery exercise for the chlorine rule and the names of 69 compounds, the spectra of 68 of which have been successfully analyzed by students using the chlorine rule, are provided in the Supplemental Material.
Gross, Ray A., Jr. J. Chem. Educ. 2004, 81, 1161.
Isotopes |
Mass Spectrometry |
Stoichiometry
LC–MS of Metmyoglobin at pH = 2. Separation and Characterization of Apomyoglobin and Heme by ESI–MS and UV–Vis  Helen Cleary Stynes, Araceli Layo, and Richard W. Smith
This article describes an experiment employing LCMS where metmyoglobin is denatured to apomyoglobin and heme in a mobile phase gradient of acetonitrile H2O with 0.1% trifluoroacetic acid. The apomyoglobin is separated from the heme group by reversed-phase chromatography.
Stynes, Helen Cleary; Layo, Araceli; Smith, Richard W. J. Chem. Educ. 2004, 81, 266.
Biotechnology |
Chromatography |
Instrumental Methods |
Mass Spectrometry |
Proteins / Peptides |
UV-Vis Spectroscopy
Organic Spectroscopy–A Capstone Experience  Jan M. Fleischer
Experiment requiring students to make decisions regarding the likely structure of their sample based upon an IR spectrum before a final analysis with NMR spectroscopy.
Fleischer, Jan M. J. Chem. Educ. 2002, 79, 1247.
IR Spectroscopy |
Mass Spectrometry |
Fourier Transform Techniques |
NMR Spectroscopy |
Molecular Properties / Structure
Personalized Combined Organic Spectroscopy Problems--Online and in the Lab  Marjorie Kandel and Peter J. Tonge
Assigning individualized spectroscopy problems from SDBS, the Japanese National Institute of Materials and Chemical Research Spectroscopic Database, combined with a laboratory unknown.
Kandel, Marjorie; Tonge, Peter J. J. Chem. Educ. 2001, 78, 1208.
Spectroscopy |
IR Spectroscopy |
NMR Spectroscopy |
Mass Spectrometry
An Efficient Microscale Procedure for the Preparation of 3,5-Dinitrobenzoates  Richard F. Smith and Gaetano M. Cristalli
A laboratory to introduce the concept and technique of mass spectroscopy to introductory organic students; sample data and analysis included.
Smith, Richard F.; Cristalli, Gaetano M. J. Chem. Educ. 1995, 72, A160.
Mass Spectrometry |
Gas Chromatography |
Aldehydes / Ketones |
Instrumental Methods |
Qualitative Analysis |
Microscale Lab
Applications of autosampling GC-MS in an introductory organic chemistry laboratory   Asleson, Gary L.; Doig, Marion T.; Heldrich, Frederick J.
Incorporation of an automated GC-MS has allowed students to have access to state-of-the-art instrumentation in a cost-effective and pedagogically sound manner.
Asleson, Gary L.; Doig, Marion T.; Heldrich, Frederick J. J. Chem. Educ. 1993, 70, A290.
Instrumental Methods |
Gas Chromatography |
Mass Spectrometry
Mass spectra of organic compounds containing bromine and chlorine  Holdsworth, David K.
32. Bits and pieces, 12.
Holdsworth, David K. J. Chem. Educ. 1982, 59, 780.
Mass Spectrometry
APPLESEARCH - A mass spectral search system  Traeger, John C.
32. Bits and pieces, 12.
Traeger, John C. J. Chem. Educ. 1982, 59, 779.
Mass Spectrometry |
Physical Properties |
Molecular Properties / Structure
Simulation of chemical instrumentation. II: A program for the synthesis of mass spectral isotopic abundances  Brownawell, Marilyn L.; San Filippo, Joseph, Jr.
31.
Brownawell, Marilyn L.; San Filippo, Joseph, Jr. J. Chem. Educ. 1982, 59, 663.
Mass Spectrometry |
Isotopes
Spectroscopy in organic chemistry at the introductory level  Gurst, Jerome E.
This author has found that the use of a limited series of compounds allow students to focus attention on the spectra rather than the structural formulas of many compounds. This allows students to grasp the significance of the spectral measurements in a minimal time period.
Gurst, Jerome E. J. Chem. Educ. 1981, 58, 511.
Spectroscopy |
UV-Vis Spectroscopy |
Mass Spectrometry |
IR Spectroscopy |
NMR Spectroscopy
Illustrating gas chromatography and mass spectrometry. An undergraduate experiment  Gross, Michael L.; Olsen, Virgil K.; Forc, R. Ken
One lab period is used to separate and collect the components of a ketone mixture; the second lab period is used to explain and demonstrate the MS instrumentation and the interpretation of ketone spectra; and in part three the spectra of the separated ketones are analyzed by individual students.
Gross, Michael L.; Olsen, Virgil K.; Forc, R. Ken J. Chem. Educ. 1975, 52, 535.
Gas Chromatography |
Mass Spectrometry |
Aldehydes / Ketones
An interactive mass spectral search system  Heller, Stephen R.; Fales, Henry M.; Milne, G. W. A.
Briefly describes an interactive mass spectral search system and the options for searching the database.
Heller, Stephen R.; Fales, Henry M.; Milne, G. W. A. J. Chem. Educ. 1972, 49, 725.
Mass Spectrometry
Spectrometric identification of insect sex attractants  Silverstein, Robert M.
Uses spectrometric methods to identify the sex attractants of three types of beetle pests.
Silverstein, Robert M. J. Chem. Educ. 1968, 45, 794.
Spectroscopy |
IR Spectroscopy |
UV-Vis Spectroscopy |
Qualitative Analysis |
Mass Spectrometry |
NMR Spectroscopy