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Fourier Transform Nuclear Magnetic Resonance Spectroscopy Experiment for Undergraduate and Graduate Students

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Matthew A. Doscotch , John F. Evans and Eric J. Munson

Department of Chemistry, University of Minnesota, Minneapolis, MN 55455

J. Chem. Educ., 1998, 75 (8), p 1008

DOI: 10.1021/ed075p1008

Publication Date (Web): August 1, 1998

Abstract

Many NMR experiments in analytical chemistry courses utilize commercial Fourier transform (FT) instruments that do little in teaching the students about the components of the spectrometer. We have designed a FT-NMR spectrometer composed of self-contained components (i.e. mixers, switches, amplifiers) that has been successfully incorporated into laboratory experiments for both undergraduate and graduate students. The undergraduate instrumental analysis experiment allows students to examine the spectrometer on a component by component basis. The individual components of the spectrometer were mounted on a board and connected by coaxial cables, which easily permits changes in the configuration of the spectrometer. Topics covered in the experiment included filtering, amplification, phase cycling, and quadrature detection as well as quantitative determination of the amount of ethanol in an unknown sample. In the graduate analog instrumentation course, the graduate students were required to take the same components used in the undergraduate experiment and construct a working spectrometer.

Keywords (Audience):

Second-Year Undergraduate

Keywords (Domain):

Laboratory Instruction

Keywords (Pedagogy):

Hands-On Learning / Manipulatives

Keywords (Subject):

Laboratory Equipment / Apparatus

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This article has been cited by 2 ACS Journal articles (2 most recent appear below).

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  Fourier transforms are used widely in chemistry and allied sciences. Examples include infrared, nuclear magnetic resonance, and mass spectroscopies. A thorough understanding of Fourier methods assists the understanding of microscopy, X-ray diffraction, ...
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Zbigniew Sojka , Michel Che
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  Laboratory and practical courses, where students become familiar with experimental techniques and learn to interpret data and relate them to appropriate theory, play a vital role in chemical education. In the large panoply of currently available ...
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