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Quantitative Analysis of Nail Polish Remover Using Nuclear Magnetic Resonance Spectroscopy RevisitedMarkus M. Hoffmann, Joshua T. Caccamis, Mark P. Heitz, and Kenneth D. Schlecht Substantial modifications intended for a second- or third-year laboratory course in analytical chemistry are presented for a previously described procedure using NMR spectroscopy to quantitatively determine analytes in commercial nail polish remover. The revised experiment introduces student collaboration to critically interpret a relatively large set of data. Hoffmann, Markus M.; Caccamis, Joshua T.; Heitz, Mark P.; Schlecht, Kenneth D. J. Chem. Educ.2008, 85, 1421.
Alcohols |
Aldehydes / Ketones |
Consumer Chemistry |
Instrumental Methods |
Laboratory Equipment / Apparatus |
NMR Spectroscopy |
Quantitative Analysis
Variable Temperature Equipment for a Commercial Magnetic Susceptibility BalanceAlbert Lötz Variable temperature equipment for the magnetic susceptibility balance MSB-MK1 of Sherwood Scientific, Ltd., is described. Whereas the balance as sold commercially can be used only for room temperature measurements, the setup presented here extends the temperature range from 20C to 80C without a loss in performance. Lötz, Albert. J. Chem. Educ.2008, 85, 107.
Instrumental Methods |
Laboratory Equipment / Apparatus |
Magnetic Properties
Detection of Catechol by Potentiometric-Flow Injection Analysis in the Presence of InterferentsSuzanne K. Lunsford, Justyna Widera, and Hong Zhang This article describes an undergraduate analytical chemistry experiment that incorporates potentiometric-flow injection analysis on a dibenzo-18-crown-6 dual platinum electrode to detect catechol in the presence of common interferents. Lunsford, Suzanne K.; Widera, Justyna; Zhang, Hong. J. Chem. Educ.2007, 84, 1471.
Instruments for Radiation DetectionEd Vitz, John W. Moore A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Instrumental Methods
Conductivity Meter (ChemPages Lab)John W. Moore, Jerrold J. Jacobsen, Joe L. March Conductivity Meter: this is a resource in the collection "ChemPages Laboratory Resources". A conductivity meter is used to measure the conductivities of electrolytic solutions. Electrodes on the device are dipped into a solution, and the solution's electrical conductivity is registered on the display. Electrical conductivity is defined as the transfer of an electric current through a solid or liquid. In electrolytic solutions, the current is carried by ions, as in solutions of salts, acids or bases. Conductivity is inversely proportional to the resistivity of the solution. The ChemPages Laboratory Resources are a set of web pages that include text, images, video, and self check questions. The topics included are those that are commonly encountered in the first-year chemistry laboratory. They have been put together for use as both a pre-laboratory preparation tool and an in-laboratory reference source.
Laboratory Equipment / Apparatus
Eppendorf Pipet (ChemPages Lab)John W. Moore, Jerrold J. Jacobsen, Joe L. March Eppendorf Pipet or Digital Pipettor: this is a resource in the collection "ChemPages Laboratory Resources". Digital pipettors deliver liquids in volumes from 1 mL to 1µL or less. They are sometimes called "micropipets", "Eppendorf pipets" or simply "Eppendorfs" after one of the more prevalent brands. The ChemPages Laboratory Resources are a set of web pages that include text, images, video, and self check questions. The topics included are those that are commonly encountered in the first-year chemistry laboratory. They have been put together for use as both a pre-laboratory preparation tool and an in-laboratory reference source.
