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A Small-Scale Low-Cost Gas Chromatograph

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Margareta Vrtacnik

Faculty of Natural Sciences and Engineering, University of Ljubljana, 1000 Ljubljana, Slovenia

Nataša Gros

Faculty of Chemistry and Chemical Technology, University of Ljubljana, 1000 Ljubljana, Slovenia

J. Chem. Educ., 2005, 82 (2), p 291

DOI: 10.1021/ed082p291

Publication Date (Web): February 1, 2005

Abstract

A small-scale low-cost portable gas chromatograph (the total cost of the instrument is approximately $65) was developed that is suitable for hands-on learning and teaching of the basic concepts of chromatography. The portability and miniaturization were ensured by the application of a small propane/butane cylinder to supply the carrier gas and by the use of optic fibers for light transmission to the electronic unit with a photoresistor as a sensor. The instrument proved that the measurements are sufficiently detailed and reliable for the basic chromatographic concepts to be introduced through a hands-on approach. The instrument does not require the use of a computer for recording data, and it also enables students actively to engage in measurements and in the assembling of the instrument at higher level.

Keywords (Audience):

High School / Introductory Chemistry

Keywords (Domain):

Analytical Chemistry

Keywords (Feature):

Cost-Effective Teacher

Keywords (Pedagogy):

Hands-On Learning / Manipulatives

Keywords (Subject):

Chromatography

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This article has been cited by 1 ACS Journal articles (1 most recent appear below).

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- Highlights from The Science Teacher: December 2009 to Summer 2010
  Steve Long
  Journal of Chemical Education2010 87 (12), 1286-1289
  This installment of reviews of chemistry-related articles published in The Science Teacher (TST) highlights material published from December 2009 through Summer 2010. TST is the high school publication of the National Science Teachers Association (NSTA). ...
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