Prev. Article Next Article Table of Contents

Article

Analytical Spectroscopy Using Modular Systems

Your current credentials do not allow retrieval of the full text.

Purchase the full-text

PDF/HTML,
figures/images,
references and tables,
(where available)

Brian M. Patterson , Neil D. Danielson , Gary A. Lorigan and André J. Sommer

Department of Chemistry and Biochemistry, Molecular Spectroscopy Laboratory, Miami University, Oxford, OH 45056

J. Chem. Educ., 2003, 80 (12), p 1460

DOI: 10.1021/ed080p1460

Publication Date (Web): December 1, 2003

Section:

History, Education, and Documentation

Abstract

This article describes the development of three analytical spectroscopy experiments that compare the determination of salicylic acid (SA) content in aspirin tablets. The experiments are based on UV–vis, fluorescence, and Raman spectroscopies and utilize modular spectroscopic components. Students assemble their own instruments, optimize them with respect to signal-to-noise, generate calibration curves, determine the SA content in retail aspirin tablets, and assign features in the respective spectra to functional groups within the active material. Using this approach in the discovery-based setting, the students gain invaluable insight into method-specific parameters, such as instrumental components, sample preparation, and analytical capability. In addition, the students learn the fundamentals of fiber optics and signal processing using the low-cost CCD based spectroscopic components.

Keywords (Audience):

Second-Year Undergraduate

Keywords (Domain):

Analytical Chemistry

Keywords (Feature):

Cost-Effective Teacher

Keywords (Pedagogy):

Inquiry-Based / Discovery Learning

Keywords (Subject):

Fluorescence Spectroscopy

View: Hi-Res PDF | PDF w/ Links

Citing Articles

Citation data is made available by participants in CrossRef's Cited-by Linking service. For a more comprehensive list of citations to this article, users are encouraged to perform a search in SciFinder.

This article has been cited by 4 ACS Journal articles (4 most recent appear below).

Isolation of Anacardic Acid from Natural Cashew Nut Shell Liquid (CNSL) Using Supercritical Carbon Dioxide
Joseph Y. N. Philip, José Da Cruz Francisco, Estera S. Dey, Joseph Buchweishaija, Lupituko L. Mkayula and Lei Ye
Journal of Agricultural and Food Chemistry2008 56 (20), 9350-9354
- Isolation of Anacardic Acid from Natural Cashew Nut Shell Liquid (CNSL) Using Supercritical Carbon Dioxide
  Joseph Y. N. Philip, José Da Cruz Francisco, Estera S. Dey, Joseph Buchweishaija, Lupituko L. Mkayula and Lei Ye
  Journal of Agricultural and Food Chemistry2008 56 (20), 9350-9354
  Solvent extracted cashew nut shell liquid (CNSL), conventionally known as natural CNSL, is a mixture of several alkenyl phenols. One of these alkenyl phenols is anacardic acid, which is present at the highest concentration. In view of anticipated ...
  Abstract | Full Text HTML | Hi-Res PDF | PDF w/ Links
Resolving Spectral Lines with a Periscope-Type DVD Spectroscope
Fumitaka Wakabayashi
Journal of Chemical Education2008 85 (6), 849
- Resolving Spectral Lines with a Periscope-Type DVD Spectroscope
  Fumitaka Wakabayashi
  Journal of Chemical Education2008 85 (6), 849
  A new type of DVD spectroscope, the periscope type, is described and the numerical analysis of the observed emission and absorption spectra is demonstrated. A small and thin mirror is put inside and an eighth part of a DVD is used as a grating. Using this ...
  Abstract | Hi-Res PDF | PDF w/ Links
Simultaneous Display of Spectral Images and Graphs Using a Web Camera and Fiber-Optic Spectrophotometer
Brian K. Niece , Gary A. Lourigan
Journal of Chemical Education2006 83 (5), 761
- Simultaneous Display of Spectral Images and Graphs Using a Web Camera and Fiber-Optic Spectrophotometer
  Brian K. Niece , Gary A. Lourigan
  Journal of Chemical Education2006 83 (5), 761
  A method is presented for displaying images and graphs of spectra on a single screen in the classroom. This demonstration can be used in discussions of atomic line spectra, absorbance spectroscopy, and solid-state bonding. The simultaneous display of both ...
  Abstract | Hi-Res PDF | PDF w/ Links
Classroom Demonstrations of Concepts in Molecular Fluorescence
Jonathan P. Blitz , Daniel J. Sheeran and Thomas L. Becker , Neil D. Danielson
Journal of Chemical Education2006 83 (5), 758
- Classroom Demonstrations of Concepts in Molecular Fluorescence
  Jonathan P. Blitz , Daniel J. Sheeran and Thomas L. Becker , Neil D. Danielson
  Journal of Chemical Education2006 83 (5), 758
  A multichannel CCD-array spectrophotometer and handheld UV lamp are utilized to acquire and project in real-time the fluorescence emission spectra of quinine, fluorescein, eosin yellow, and rhodamine B. Instrumental concepts of fluorescence are ...
  Abstract | Hi-Res PDF | PDF w/ Links