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  Home > JCE Print > Journal of Chemical Education > Issues > 2001  > March  >
In the Laboratory
Topics in Chemical Instrumentation
Ion Chromatography: Analysis of Ions in Pond Waters
Kumar Sinniah and Kenneth Piers
Department of Chemistry and Biochemistry, Calvin College, Grand Rapids, MI 49546
Cover
March 2001
Vol. 78 No. 3
p. 358
Abstract
Ion chromatography (IC) is a powerful technique for analysis of aqueous media containing a variety of both cations and anions. It promises to replace classical wet chemical methods for such analyses, which are frequently labor intensive and time consuming and often involve use of hazardous chemicals in the sampling protocol. We have introduced an IC instrument in our first-year general chemistry laboratory courses and in the quantitative analysis course with considerable success. Students have used it to investigate the water quality of a number of ponds on the campus grounds and associated ecosystem preserve. In the introductory chemistry laboratories, students use the IC instrument to analyze fluoride, chloride, nitrate, phosphate, and sulfate ions in ponds located on the campus. In quantitative analysis, in addition to analyzing pond waters with IC, students compare results obtained from IC with complementary techniques such as ion-selective electrodes and spectrometric methods. The high sensitivity of ion chromatography and the minimal sample preparation involved make IC a powerful and very usable tool for the analysis of ions in an undergraduate setting.
Supplement
Instructions for first-year and quantitative analysis students for the IC work described in this article are available.
*  Contents JCE2001p0358W.doc (MS Word 97-98)
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*  Citation
 Sinniah, Kumar; Piers, Kenneth. J. Chem. Educ. 2001 78 358.
*  Keywords
 Analytical Chemistry; Chromatography; Environmental Chemistry; Instrumental Methods; Ion Exchange; Laboratory Instruction; Quantitative Analysis; Water / Water Chemistry
*  History
 Created:
Last Updated:		 February 6, 2001
August 31, 2005
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