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The Chemical Educator

ISSN: 1430-4171 (electronic version)

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Abstract Volume 4 Issue 6 (1999) pp 221-225

Qualitative Identification of an Unknown Pesticide Using GC-MS and Online Resources

Grant N. Holder,* Steven J. Breiner, David G. Farrar, David M. Gooden, Laurel L. McClure

A. R. Smith Department of Chemistry, Appalachian State University, Boone, NC 28607

Published online: 1 December 1999

Abstract. A senior-level instrumental analysis experiment is described in which students examine fruit for pesticide residues. This experiment involves fundamental instruction in sample preparation, the use of gas chromatography (GC) to resolve and deduce important components of a commercial pesticide preparation by matching against a certified standard, and unambiguous identification of the active pesticide by using mass spectrometry in conjunction with public data available on the Internet.

Key Words:  Computers in Chemistry; chlordane; instrumental analysis; gc-ms; web-based teaching; web-based learning

(*) Corresponding author. (E-mail:

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Issue date: December 1, 1999

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