| Journal Articles: 61 results |
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NMR and IR Spectroscopy for the Structural Characterization of Edible Fats and Oils Molly W. Crowther
This article describes an upper-level instrumental laboratory for undergraduates that explores the complementary nature of IR and NMR spectroscopy in the analysis of five edible and structurally similar fats and oils for average chain length, degree of unsaturation, and trans fat content.
Crowther, Molly W. J. Chem. Educ. 2008, 85, 1550.
Consumer Chemistry |
Food Science |
IR Spectroscopy |
NMR Spectroscopy |
Qualitative Analysis |
Spectroscopy |
Fatty Acids
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Identification of an Unknown Compound by Combined Use of IR, 1H NMR, 13C NMR, and Mass Spectrometry: A Real-Life Experience in Structure Determination Louis J. Liotta and Magdalena James-Pederson
In this introductory organic chemistry experiment, students are expected to operate NMR, IR, and GCMS instrumentation to obtain spectra which are interpreted to elucidate the chemical structure of the assigned compounds without the benefit of a list of possible unknowns.
Liotta, Louis J.; James-Pederson, Magdalena. J. Chem. Educ. 2008, 85, 832.
Gas Chromatography |
Instrumental Methods |
IR Spectroscopy |
Mass Spectrometry |
Molecular Properties / Structure |
NMR Spectroscopy |
Qualitative Analysis |
Spectroscopy
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ATR–FTIR Spectroscopy in the Undergraduate Chemistry Laboratory Jennifer D. Schuttlefield and Vicki H. Grassian
Presents several examples of the use of attenuated total reflectance-Fourier transform infrared spectroscopy in the undergraduate chemistry laboratory, including measuring the infrared spectra of solid and liquid organic compounds commonly used as unknowns and of inorganic solids synthesized by students.
Schuttlefield, Jennifer D.; Grassian, Vicki H. J. Chem. Educ. 2008, 85, 279.
IR Spectroscopy |
Liquids |
Qualitative Analysis |
Quantitative Analysis |
Solids |
Undergraduate Research
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A New Colorimetric Assay of Tabletop Sweeteners Using a Modified Biuret Reagent Christopher J. Fenk, Nathan Kaufman, and Donald G. Gerbig, Jr.
Presents a new, fast and effective colorimetric analysis of aspartame that incorporates a less caustic biuret reagent and visible spectroscopic analysis for selective detection in aqueous solutions using readily available instrumentation.
Fenk, Christopher J.; Kaufman, Nathan; Gerbig, Donald G., Jr. J. Chem. Educ. 2007, 84, 1676.
Consumer Chemistry |
Coordination Compounds |
Crystal Field / Ligand Field Theory |
Food Science |
Qualitative Analysis |
Quantitative Analysis |
UV-Vis Spectroscopy |
Amino Acids
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Optical Properties of Fluorescent Mixtures: Comparing Quantum Dots to Organic Dyes Benjamin M. Hutchins, Thomas T. Morgan, Miné G. Ucak-Astarlioglu, and Mary Elizabeth Williams
Visually observed fluorescent colors of quantum dots in conjunction with spectroscopic data show students the additive emission of such mixtures; while some appear to emit white light, their fluorescence peaks remain spectroscopically resolved.
Hutchins, Benjamin M.; Morgan, Thomas T.; Ucak-Astarlioglu, Miné G.; Williams, Mary Elizabeth. J. Chem. Educ. 2007, 84, 1301.
Dyes / Pigments |
Fluorescence Spectroscopy |
Materials Science |
Nanotechnology |
Photochemistry |
Qualitative Analysis |
Spectroscopy |
UV-Vis Spectroscopy
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Infrared Examination of the Transformation of Barium Sulfate into Barium Carbonate. An Inorganic Infrared Qualitative and Quantitative Experiment Gene E. Kalbus, Van T. Lieu, and Lee H. Kalbus
This experiment provides an interesting pedagogical exercise that not only demonstrates the value of infrared spectroscopy in the investigation of inorganic systems, but also visually illustrates a procedure used in classical wet chemical qualitative analysis for sample preparation.
Kalbus, Gene E.; Lieu, Van T.; Kalbus, Lee H. J. Chem. Educ. 2006, 83, 910.
Instrumental Methods |
IR Spectroscopy |
Qualitative Analysis |
Quantitative Analysis |
Solids
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Presumptive and Confirmatory Drug Tests Craig Anderson
Tests for illegal drugs were performed on unknowns obtained from over-the-counter cold medicines. Substances that tested positive for the qualitative Marquis color test were found to be false positives for illegal substances, while scopolamine hydrochloride shows a false positive for cocaine hydrochloride with the cobalt thiocyanate reagent.
Anderson, Craig. J. Chem. Educ. 2005, 82, 1809.
Drugs / Pharmaceuticals |
Qualitative Analysis |
Acids / Bases |
Gas Chromatography |
IR Spectroscopy |
Mass Spectrometry
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The Virtual ChemLab Project: A Realistic and Sophisticated Simulation of Organic Synthesis and Organic Qualitative Analysis Brian F. Woodfield, Merritt B. Andrus, Gregory L. Waddoups, Melissa S. Moore, Richard Swan, Rob Allen, Greg Bodily, Tricia Andersen, Jordan Miller, Bryon Simmons, and Richard Stanger
Describes a set of sophisticated and realistic laboratory simulations for use in freshman- and sophomore-level chemistry classes and laboratories called Virtual ChemLab. The purpose of these simulations is to reinforce concepts taught in the classroom, provide an environment for creative learning, and emphasize the thinking behind instructional laboratory experiments.
Woodfield, Brian F.; Andrus, Merritt B.; Waddoups, Gregory L.; Moore, Melissa S.; Swan, Richard; Allen, Rob; Bodily, Greg; Andersen, Tricia; Miller, Jordan; Simmons, Bryon; Stanger, Richard. J. Chem. Educ. 2005, 82, 1728.
IR Spectroscopy |
NMR Spectroscopy |
Qualitative Analysis |
Synthesis |
Reactions |
Thin Layer Chromatography
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Preparation, Analysis, and Characterization of Some Transition Metal Complexes—A Holistic Approach Kristy M. Blyth, Lindsay R. Mullings, David N. Phillips, David Pritchard, and Wilhelm van Bronswijk
In this laboratory procedure, a wide range of complexes are characterized by IR and UVvis spectroscopy, magnetochemistry, and conductance. The results allow one to the deduce the nature and strength of the bonding of the ligand to the central atom and the number of ions that the complex produces in aqueous solution.
Blyth, Kristy M.; Mullings, Lindsay R.; Phillips, David N.; Pritchard, David; van Bronswijk, Wilhelm. J. Chem. Educ. 2005, 82, 1667.
IR Spectroscopy |
Magnetic Properties |
UV-Vis Spectroscopy |
Coordination Compounds |
Qualitative Analysis |
Synthesis |
Conductivity
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NMR Analysis of Unknowns: An Introduction to 2D NMR Spectroscopy David E. Alonso and Steven E. Warren
Second-year organic chemistry students analyze and compare the spectral data of three unknown ketones (2-heptanone, 3-heptanone, and 4-heptanone). Students acquire one-dimensional proton and carbon NMR data for each unknown and make signal assignments based on chemical shifts, integration values, and splitting patterns of signals. Difficulties are encountered during interpretation of NMR data for 2- and 3-heptanone. Acquiring and analyzing the two-dimensional NMR spectra of the heptanones resolve these problems.
Alonso, David E.; Warren, Steven E. J. Chem. Educ. 2005, 82, 1385.
Instrumental Methods |
NMR Spectroscopy |
Qualitative Analysis
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Organic Spectroscopy Laboratory: Utilizing IR and NMR in the Identification of an Unknown Substance Neil M. Glagovich and Timothy D. Shine
An undergraduate organic laboratory designed to teach the use of IR and NMR spectra interpretation in the identification of an unknown substance has been developed. This laboratory requires the student to obtain the IR spectrum of an unknown substance and, from the interpretation of that spectrum, determine which of several possible functional groups is present in the molecule. Using this information and either the melting point or boiling point of the unknown, the student is able to determine a list of likely candidates (usually between eight and twelve suspects collated from a supplied table of possible compounds). The student will then draw the structures for all candidate compounds and, from those structures, predict the 1H- and 13C-NMR spectra for each.
Glagovich, Neil M.; Shine, Timothy D. J. Chem. Educ. 2005, 82, 1382.
IR Spectroscopy |
NMR Spectroscopy |
Qualitative Analysis |
Solids |
Liquids
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Screening Technique for Lead and Cadmium in Toys and Other Materials Using Atomic Absorption Spectroscopy Henry Brouwer
This article describes a simple method to determine the presence of metals such as lead and cadmium in plastic toys, paints, and other solids using an atomic absorption spectrometer (AAS) without going through the time-consuming sample preparation steps. Basically, the method involves transferring solid sample to a nichrome wire by placing a small sample on a wire loop or touching the heated wire to the sample and then heating the wire in the AAS flame. By choosing the appropriate radiation source and wavelength, the presence of different metals may be determined qualitatively.
Brouwer, Henry. J. Chem. Educ. 2005, 82, 611.
Atomic Spectroscopy |
Consumer Chemistry |
Metals |
Qualitative Analysis |
Metals
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The Separation and Identification of Two Unknown Solid Organic Compounds: An Experiment for the Sophomore Organic Chemistry Laboratory Patty L. Feist
Students are given a mixture of a solid ketone and a solid alcohol and asked to separate and identify the two components. First the students use TLC to determine the optimum solvent system to separate the two compounds, then they separate the unknowns on a microscale flash chromatography column. The students acquire the melting point, and if possible, the IR and 1H NMR spectra for each separated compound and identify them by matching the observed data with that of known compounds.
Feist, Patty L. J. Chem. Educ. 2004, 81, 109.
Chromatography |
IR Spectroscopy |
Microscale Lab |
NMR Spectroscopy |
Separation Science |
Qualitative Analysis
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Classification of Vegetable Oils by Principal Component Analysis of FTIR Spectra David A. Rusak, Leah M. Brown, and Scott D. Martin
Comparing unknown samples of vegetable oils to known samples using FTIR and principal component analysis (PCA) and nearest means classification (NMC).
Rusak, David A.; Brown, Leah M.; Martin, Scott D. J. Chem. Educ. 2003, 80, 541.
IR Spectroscopy |
Instrumental Methods |
Food Science |
Lipids |
Chemometrics |
Qualitative Analysis |
Fourier Transform Techniques |
Consumer Chemistry |
Applications of Chemistry
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Analysis of Carbon Monoxide in Blood Benjamin P. Huddle and Joseph C. Stephens
Qualitative and quantitative analysis of carbon monoxide in blood using the Conway diffusion method.
Huddle, Benjamin P.; Stephens, Joseph C. J. Chem. Educ. 2003, 80, 441.
Gases |
Toxicology |
UV-Vis Spectroscopy |
Qualitative Analysis |
Quantitative Analysis |
Applications of Chemistry |
Forensic Chemistry
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Basic Atomic and Molecular Spectroscopy ( J. Michael Hollas) Brian K. Taylor
Covers the concepts of quantitative and qualitative spectroscopy without significant mathematical detail.
Taylor, Brian K. J. Chem. Educ. 2003, 80, 389.
Atomic Spectroscopy |
Qualitative Analysis |
Quantitative Analysis
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Micelle-Mediated Extraction of Heavy Metals from Environmental Samples: An Environmental Green Chemistry Laboratory Experiment Dimosthenis L. Giokas, Evangelos K. Paleologos, and Miltiades I. Karayannis
A laboratory focussing on the determination of metallic elements in drinking water through cloud-point extraction.
Giokas, Dimosthenis L.; Paleologos, Evangelos K.; Karayannis, Miltiades I. J. Chem. Educ. 2003, 80, 61.
Atomic Spectroscopy |
Metals |
Micelles |
Separation Science |
Green Chemistry |
Qualitative Analysis |
Quantitative Analysis
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The Analysis of Seawater: A Laboratory-Centered Learning Project in General Chemistry Jodye I. Selco, Julian L. Roberts, Jr., and Daniel B. Wacks
Experiment designed to introduce students to qualitative and quantitative analysis methods (gravimetric analysis, potentiometric titration, ion-selective electrodes, and atomic absorption and atomic emission spectroscopy) in the context of an overall analysis of an environmental sample.
Selco, Jodye I.; Roberts, Julian L., Jr.; Wacks, Daniel B. J. Chem. Educ. 2003, 80, 54.
Aqueous Solution Chemistry |
Instrumental Methods |
Qualitative Analysis |
Quantitative Analysis |
Water / Water Chemistry |
Gravimetric Analysis |
Titration / Volumetric Analysis |
Ion Selective Electrodes |
Atomic Spectroscopy |
Potentiometry
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Synthesis and Characterization of a Gasoline Oxygenate, Ethyl tert-Butyl Ether Craig J. Donahue, Teresa D'Amico, and Jennifer A. Exline
Procedure for the synthesis and characterization of ethyl tert-butyl ether.
Donahue, Craig J.; D'Amico, Teresa; Exline, Jennifer A. J. Chem. Educ. 2002, 79, 724.
Chromatography |
Synthesis |
Ethers |
Gas Chromatography |
IR Spectroscopy |
Qualitative Analysis
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Fractional Distillation and GC Analysis of Hydrocarbon Mixtures Craig J. Donahue
Separating and identifying the components of a three-hydrocarbon mixture through fractional distillation and gas chromatography.
Donahue, Craig J. J. Chem. Educ. 2002, 79, 721.
Chromatography |
Gas Chromatography |
Separation Science |
Alkanes / Cycloalkanes |
Alkenes |
Aromatic Compounds |
IR Spectroscopy |
NMR Spectroscopy |
Qualitative Analysis
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Raman Spectroscopy with a Fiber-Optic Probe and Multichannel Detection Thomas J. Vickers, Jeanne Pecha, and Charles K. Mann
Exercise emphasizing instrumental methods of chemical analysis of solids and liquids relying on Raman spectroscopy.
Vickers, Thomas J.; Pecha, Jeanne; Mann, Charles K. J. Chem. Educ. 2001, 78, 1674.
Instrumental Methods |
Raman Spectroscopy |
Qualitative Analysis
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Cigarette Smoke Analysis Using an Inexpensive Gas-Phase IR Cell N. Garizi, A. Macias, T. Furch, R. Fan, P. Wagenknecht, and K. A. Singmaster
A PVC gas cell used to collect and analyze cigarette smoke and car exhaust through IR spectroscopy.
Garizi, N.; Macias, A.; Furch, T.; Fan, R.; Wagenknecht, P.; Singmaster, K. A. J. Chem. Educ. 2001, 78, 1665.
Atmospheric Chemistry |
IR Spectroscopy |
Fourier Transform Techniques |
Laboratory Equipment / Apparatus |
Qualitative Analysis
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Distinguishing Calcium Carbonate from Calcium Sulfate Dihydrate by Instrumental Methods. A Set of Laboratory Experiments for Analytical Chemistry and Spectroscopy Eugenio Garribba, Giovanni Micera, Liliana Strinna-Erre, and Giovanna Stara
Distinguishing calcium carbonate from calcium sulfate dihydrate through chemical analysis, thermal analysis and decomposition, IR spectroscopy, NIR spectroscopy, and EDXRF spectroscopy.
Garribba, Eugenio; Micera, Giovanni; Strinna-Erre, Liliana; Stara, Giovanna. J. Chem. Educ. 2001, 78, 1090.
Instrumental Methods |
IR Spectroscopy |
Thermal Analysis |
Qualitative Analysis
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A More Realistic Teaching Style in Spectroscopic Instruction Mar Gómez Gallego, Santiago Romano, Miguel A. Sierra, and Enrique Nieto
A practical application of spectroscopic analysis in intermediate and advanced organic chemistry to determine reaction mechanisms and identify products; provides three specific problems.
Gallego, Mar Gómez; Romano, Santiago; Sierra, Miguel A.; Nieto, Enrique. J. Chem. Educ. 2001, 78, 765.
Mechanisms of Reactions |
NMR Spectroscopy |
Learning Theories |
Spectroscopy |
Molecular Properties / Structure |
Qualitative Analysis
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Sampling Technique for Organic Solids in IR Spectroscopy: Thin Solid Films as the Method of Choice in Teaching Laboratories Patty L. Feist
Techniques for sampling solid organic compounds for FTIR spectroscopy are briefly compared and contrasted. One method, called thin solid films, stands out as the method of choice in undergraduate laboratories because they are easy and inexpensive to prepare; the spectra obtained are of good to excellent quality.
Feist, Patty L. J. Chem. Educ. 2001, 78, 351.
IR Spectroscopy |
Instrumental Methods |
Fourier Transform Techniques |
Qualitative Analysis
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Analysis of Soft Drinks Using Nuclear Magnetic Resonance Spectroscopy: A Mentorship Arkim Wilson, Craig Myers, George Crull, Michael Curtis, and Pamela Pasciak Patterson
This mentorship was designed to expose a student to the laboratory routine for a chemist at Bristol Myers Squibb Company (BMS). The student visited BMS, collaborated with BMS scientists, and actually completed a project on site. He was asked to determine the identity of an unknown sample of soft drink retrieved from a fictitious crime scene using NMR spectroscopy.
Wilson, Arkim; Myers, Craig; Crull, George; Curtis, Michael; Pasciak, Pamela M. J. Chem. Educ. 1999, 76, 1414.
Instrumental Methods |
Atomic Properties / Structure |
NMR Spectroscopy |
Qualitative Analysis |
Separation Science |
Student / Career Counseling
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Spectrophotometric Determination of Thiocyanate in Human Saliva Markku Lahti*, Juhani Vilpo, and Jari Hovinen
Here is described how qualitative and quantitative analysis of human saliva thiocyanate ion can be performed as a part of the laboratory exercise for the determination of chemical equilibrium between Fe+3 and SCN- ions.
Lahti, Markku; Vilpo, Juhani; Hovinen, Jari. J. Chem. Educ. 1999, 76, 1281.
UV-Vis Spectroscopy |
Undergraduate Research |
Medicinal Chemistry |
Qualitative Analysis |
Quantitative Analysis
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Chromatography, Absorption, and Fluorescence: A New Instrumental Analysis Experiment on the Measurement of Polycyclic Aromatic Hydrocarbons in Cigarette Smoke Lisa M. Wingen, Jason C. Low, and Barbara J. Finlayson-Pitts
An experiment suitable for an undergraduate junior/senior-level instrumental analysis laboratory which illustrates the principles of high-performance liquid chromatography (HPLC) and its application to the identification and measurement of polycyclic aromatic hydrocarbons (PAH) in tobacco smoke.
Wingen, Lisa M.; Low, Jason C.; Finlayson-Pitts, Barbara J. J. Chem. Educ. 1998, 75, 1599.
Instrumental Methods |
Chromatography |
Qualitative Analysis |
Quantitative Analysis |
Fluorescence Spectroscopy |
Aromatic Compounds
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Infrared Spectroscopy Determination of Lead Binding to Ethylenediaminotetraacetic Acid Alanah Fitch and Simona Dragan
In an attempt to improve a thematic lab sequence based on lead analysis of community derived samples, we have considered infrared spectroscopy as a method of determining the lead bound to ethylenediaminotetraacetic acid (EDTA).
Fitch, Alanah; Dragan, Simona. J. Chem. Educ. 1998, 75, 1018.
IR Spectroscopy |
Qualitative Analysis |
Quantitative Analysis |
Coordination Compounds
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Incorporating Organic Name Reactions and Minimizing Qualitative Analysis in an Unknown Identification Experiment Claire Castro and William Karney
The authors have developed a new type of unknown identification experiment for the introductory organic chemistry laboratory. The unknown sample the student is provided with is the product of an organic name reaction. The student is only informed of the starting material and conditions used in the compound's synthesis, and must then: (1) deduce the compound's structure, (2) determine the name reaction and corresponding mechanism that yields the compound, and (3) present his/her results to the class.
Claire Castro and William Karney. J. Chem. Educ. 1998, 75, 472.
IR Spectroscopy |
NMR Spectroscopy |
Qualitative Analysis |
Nomenclature / Units / Symbols |
Reactions |
Mechanisms of Reactions |
Molecular Properties / Structure
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Effects of Solution Physical Properties on Copper and Chromium Signals in Flame Atomic Absorption Spectrometry Fàbio R. P. Rocha, Joaquim A. Nòbrega
Instrumental techniques, such as flame atomic absorption spectrometry (FAAS), are frequently used in chemical analysis. Independently of the technique used, the chemical principles must be considered to assure that the analytical results are correct.
Rocha, Fàbio R. P.; Nòbrega , Joaquim A. J. Chem. Educ. 1996, 73, 982.
Physical Properties |
Atomic Spectroscopy |
Qualitative Analysis |
Solutions / Solvents |
Instrumental Methods
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A Demonstration of Crystal-Field Effects in Octahedral Complexes Edward Koubek and Mark Elert
The simple demonstration described here can perhaps enhance the presentation of crystal field splitting and magnetic properties in octahedral complexes.
Koubek, Edward; Elert, Mark. J. Chem. Educ. 1996, 73, 947.
Crystal Field / Ligand Field Theory |
Spectroscopy |
Qualitative Analysis |
Magnetic Properties |
Coordination Compounds
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A New Photochemistry Experiment, A Simple 2+2 Photocycloaddition that Poses an Interesting NMR Problem John T. Magner, Matthias Selke, Arlene A. Russell, Orville L. Chapman
The cycloaddition of -nitrostyrene to 2,3-dimethyl-1,3-butadiene provides an extremely clean example of 2 + 2 cycloaddition. This laboratory exercise combines theory, technique, spectroscopy, and data interpretation.
J. Chem. Educ. 1996, 73, 854.
Photochemistry |
NMR Spectroscopy |
Qualitative Analysis |
Instrumental Methods |
Addition Reactions |
Mechanisms of Reactions
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GC-MS and GC-FTIR Characterization of Products: From Classical Freshman and Sophomore Syntheses D. S. Amenta, T. C. Devore, T. N. Gallaher, C. M. Zook, and J. A. Mosbo
The GC separation of ferrocene, acetylferrocene, and diacetylferrocene is accomplished in less than ten minutes. In addition to the operation of the instrument, the students are introduced to the interpretation of mass spectra and library aided spectral identification.
D. S. Amenta, T. C. Devore, T. N. Gallaher, C. M. Zook, and J. A. Mosbo. J. Chem. Educ. 1996, 73, 572.
Instrumental Methods |
Gas Chromatography |
IR Spectroscopy |
Qualitative Analysis
|
A Pedagogical Approach to Qualitative Organic Analysis: Simulating the Integration of Wet Tests, Spectroscopy, and Common Sense Adrian J. Blackman
185. Students, by using a computer simulation, are able to discover and rehearse the strategy of identifying an organic unknown in a situation free from the additional uncertainties of performing unfamiliar laboratory work and then relying on the results.
Blackman, Adrian J. J. Chem. Educ. 1996, 73, 434.
Spectroscopy |
Qualitative Analysis
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Organic Qualitative Analysis at the Microscale Level Craig, Rhoda E. R.; Kaufman, Kurt K.
Project requiring students to identify pure unknowns and the components of mixtures using a variety of chromatography and spectrometry techniques.
Craig, Rhoda E. R.; Kaufman, Kurt K. J. Chem. Educ. 1995, 72, A102.
NMR Spectroscopy |
IR Spectroscopy |
Chromatography |
Separation Science |
Qualitative Analysis |
Acids / Bases
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A Microscale Purification and Qualitative Spectroscopic Examination of C60 (Buckminsterfullerene): An Experiment Suitable for Undergraduate Organic Laboratory Courses Marecek, James F.; Kuduk, Scott D.
A simple and inexpensive purification procedure for isolating C60.
Marecek, James F.; Kuduk, Scott D. J. Chem. Educ. 1994, 71, A141.
Microscale Lab |
Spectroscopy |
Qualitative Analysis |
Separation Science
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A Qualitative Experiment for Organic Chemistry Lab Hermann, Christine K. F.
This experiment was introduced near the end of second semester. The students were told that the unknowns were either an alcohol, a carboxylic acid, an amine, an aldehyde, or a ketone. The identifications were based on melting points or boiling points, the IR and NMR spectra, and a set of four classification tests.
Hermann, Christine K. F. J. Chem. Educ. 1994, 71, 991.
Qualitative Analysis |
IR Spectroscopy |
NMR Spectroscopy
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Microscale qualitative organic analysis Goller, Edwin J.; Miller, John H.
Students gain critical thinking skills in an organic chemistry course by selecting their own chemical tests.
Goller, Edwin J.; Miller, John H. J. Chem. Educ. 1993, 70, A159.
Qualitative Analysis |
Spectroscopy |
Fourier Transform Techniques |
NMR Spectroscopy |
Gas Chromatography |
Mass Spectrometry |
Microscale Lab
|
Whether organic qual will wither? Zieger, Herman E.
Author argues the important pedagogic purposes of organic qualitative analysis.
Zieger, Herman E. J. Chem. Educ. 1993, 70, 230.
Spectroscopy |
Qualitative Analysis |
IR Spectroscopy |
NMR Spectroscopy
|
Keeping the "un" in unknowns in qualitative identification exercises using FTIR. Chauvin, Judy V.; Field, Jack E.
Using hexachloro-1,3-butadiene as the diluent for FTIR unknowns.
Chauvin, Judy V.; Field, Jack E. J. Chem. Educ. 1992, 69, 661.
IR Spectroscopy |
Fourier Transform Techniques |
Qualitative Analysis
|
An introduction to NMR titration for studying rapid reversible complexation Macomber, Roger S.
Nuclear magnetic resonance spectrospcopy is one of the most useful techniques available to chemists for the investigation of dynamic molecular processes.
Macomber, Roger S. J. Chem. Educ. 1992, 69, 375.
NMR Spectroscopy |
Titration / Volumetric Analysis |
Solutions / Solvents |
Qualitative Analysis
|
Transition metal complexes with 1,4,7-trithiacyclononane: A laboratory experiment in coordination chemistry Grant, Gregory J.; Mauldin, Penny L.; Setzer, William N.
A laboratory experiment in coordination chemistry that deals with the synthesis of four transition metal complexes containing a crown thioether ligand.
Grant, Gregory J.; Mauldin, Penny L.; Setzer, William N. J. Chem. Educ. 1991, 68, 605.
Coordination Compounds |
Metals |
UV-Vis Spectroscopy |
Fourier Transform Techniques |
IR Spectroscopy |
Magnetic Properties |
Qualitative Analysis
|
Preparation and characterization of two nickel(II) complexes: An inorganic chemistry experiment Eagle, Cassandra T.; Walmsley, Frank
An inorganic chemistry experiment developed on coordination compounds that provides an opportunity to piece together several sets of data to determine significant information about the structures of compounds.
Eagle, Cassandra T.; Walmsley, Frank J. Chem. Educ. 1991, 68, 336.
IR Spectroscopy |
Qualitative Analysis |
Magnetic Properties |
Coordination Compounds
|
Trifluoroacetylation of unknown alcohols: An integrated microscale organic experiment using spectroscopic methods Piers, Kenneth; Hsung, Richard
The authors have found that trifluoroacetylation of unknown alcohols is a fast, clean, easily performed microscale experiment that integrates a number of aspects of laboratory work, viz. synthesis, isolation, characterization, spectroscopic measurement, and interpretation, and unknown identification.
Piers, Kenneth; Hsung, Richard J. Chem. Educ. 1989, 66, 90.
Alcohols |
Microscale Lab |
Qualitative Analysis |
NMR Spectroscopy |
IR Spectroscopy
|
Using a computer database - An "experiment" for the organic and forensic laboratories Umland, Jean B.
From the infrared spectrum of an unknown compound, students use an Infrared Search System to get a list of possible compounds.
Umland, Jean B. J. Chem. Educ. 1985, 62, 500.
Forensic Chemistry |
IR Spectroscopy |
Qualitative Analysis
|
Quantitative analysis of a mixture by NMR spectroscopy Wallace, Tim
Adding a measured quantity of an inert, easily removed reference compound with a simple NMR signal that does not overlap with the mixture's signal can provide the basis for an instructive experiment.
Wallace, Tim J. Chem. Educ. 1984, 61, 1074.
Qualitative Analysis |
NMR Spectroscopy |
Instrumental Methods
|
Qualitative identification of potassium ions using didymium glasses Wood, William F.
Students using the didymium glasses of glass blowers have no trouble determining the presence or absence of potassium in flame tests when their unknown contains sodium.
Wood, William F. J. Chem. Educ. 1984, 61, 1024.
Qualitative Analysis |
Atomic Properties / Structure |
Atomic Spectroscopy
|
A practical experiment for determining a pervasive, persistent pollutant Anderson, C. P.; Saner, W. A.
Spectral identification by means of infrareds spectroscopy of the PCBs recovered from a TLC plate is enhanced due to the concentrating effect of a commercial sample-recovery system.
Anderson, C. P.; Saner, W. A. J. Chem. Educ. 1984, 61, 738.
IR Spectroscopy |
Thin Layer Chromatography |
Separation Science |
Qualitative Analysis
|
Identification of copper(II) complexes in aqueous solution by electron spin resonance: An undergraduate coordination chemistry experiment Micera, G.; Deiana, S.; Erre, L.; Piu, P.; Panzanelli, A.
Experiment for studying complex species formed by Cu2+ and 2,6-dihydroxybenzoate ions in aqueous solution through ESR spectroscopy.
Micera, G.; Deiana, S.; Erre, L.; Piu, P.; Panzanelli, A. J. Chem. Educ. 1984, 61, 646.
Coordination Compounds |
Qualitative Analysis |
Aqueous Solution Chemistry |
EPR / ESR Spectroscopy
|
Separation and determination of hydroxyacetophenones: An experiment in preparative TLC and UV spectroscopy Bick, I. R. C.; Blackman, A. J.; Browne, E. J.
A mixture of o-, m-, and p-hydroxyacetophenones is separated through thin-layer chromatography, and the constituents are identified by UV spectroscopy.
Bick, I. R. C.; Blackman, A. J.; Browne, E. J. J. Chem. Educ. 1982, 59, 618.
Separation Science |
Thin Layer Chromatography |
UV-Vis Spectroscopy |
Qualitative Analysis |
Quantitative Analysis
|
Isolation, separation and identification of synthetic food colors Dixon, E. A.; Renyk, G.
A simple, inexpensive experiment for the extraction of synthetic dyes permitted in foodstuffs, and their separation and identification using thin-layer chromatography and ultraviolet/visible spectroscopy.
Dixon, E. A.; Renyk, G. J. Chem. Educ. 1982, 59, 67.
Separation Science |
Food Science |
Chromatography |
Thin Layer Chromatography |
Consumer Chemistry |
UV-Vis Spectroscopy |
Qualitative Analysis
|
A simple technique for the preparation of solutions for qualitative infrared spectroscopy Southwick, Everett W.; Kidd, Douglas H.
A simple technique for the preparation of solutions for qualitative infrared spectroscopy involves drawing the sample into a capillary tube through capillary action.
Southwick, Everett W.; Kidd, Douglas H. J. Chem. Educ. 1979, 56, 394.
Solutions / Solvents |
Spectroscopy |
IR Spectroscopy |
Qualitative Analysis
|
Identification of FD&C dyes by visible spectroscopy. A consumer-oriented undergraduate experiment McKone, Harold T.
Absorption maxima and procedures for identifying 11 FD&C dyes through visible spectroscopy.
McKone, Harold T. J. Chem. Educ. 1977, 54, 376.
Qualitative Analysis |
Dyes / Pigments |
Spectroscopy |
UV-Vis Spectroscopy |
Consumer Chemistry |
Food Science
|
On-line computer printing of NMR spectra Rondeau, Roger E.; Rish, Hughey A. III
The program described reduces the probability of assignment error while also eliminating the most tedious task in the analysis of complex NMR spectra.
Rondeau, Roger E.; Rish, Hughey A. III J. Chem. Educ. 1970, 47, 139.
Spectroscopy |
NMR Spectroscopy |
Qualitative Analysis
|
Hydrolysis of latex paint in dimethyl sulfoxide: An organic laboratory experiment Vinson, Joe A.
The purpose of this experiment is to hydrolyze the ester groups of the vinyl acetate and acrylic ester found in latex paint and identify the R group of the acrylic ester.
Vinson, Joe A. J. Chem. Educ. 1969, 46, 877.
Qualitative Analysis |
IR Spectroscopy
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Reflectance spectroscopic analysis of dyes separated by thin layer chromatography Frodyma, M. M.; Frei, R. W.
This study attempts to verify the usefulness of reflectance spectroscopy as an analytical tool in the hands of the inexperienced analyst.
Frodyma, M. M.; Frei, R. W. J. Chem. Educ. 1969, 46, 522.
Spectroscopy |
Dyes / Pigments |
Thin Layer Chromatography |
Qualitative Analysis |
Quantitative Analysis
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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
|
Qualitative tests for K+ McCoy, Robert E.
Flame tests of solid or concentrated cobaltnitrites produce results that are easily mistaken for potassium.
McCoy, Robert E. J. Chem. Educ. 1965, 42, 444.
Qualitative Analysis |
Atomic Spectroscopy
|
Spectrometric identification of organic compounds Silverstein, Robert M.; Bassler, G. Clayton
Presents a sequence of procedures for identifying an unknown organic liquid using mass, NMR, IR, and UV spectroscopy, along with specific examples of unknowns and their spectra,
Silverstein, Robert M.; Bassler, G. Clayton J. Chem. Educ. 1962, 39, 546.
Spectroscopy |
Qualitative Analysis |
Mass Spectrometry |
IR Spectroscopy |
NMR Spectroscopy |
UV-Vis Spectroscopy
|
The use of fluorescence in qualitative analysis White, Charles E.
It is the purpose of this paper to show that the techniques of fluorescence are simple, that the apparatus required is inexpensive, and to outline procedures that may be used in any scheme of qualitative analysis. Specific tests for aluminum, zinc, boron, sodium, beryllium, thallium, and thorium are described.
White, Charles E. J. Chem. Educ. 1951, 28, 369.
Qualitative Analysis |
Fluorescence Spectroscopy
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