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Química Nova

versão impressa ISSN 0100-4042versão On-line ISSN 1678-7064


LIGIERO, Carolina Bastos Pereira et al. Comparison of quantification methods in gas chromatography: an experiment for chemistry courses. Quím. Nova [online]. 2009, vol.32, n.5, pp.1338-1341. ISSN 0100-4042.

This article describes an experiment designed to teach quantitative determination in gas chromatography (GC) in Organic and Analytical Chemistry practical classes. The experiment consisted of extracting and analyzing eugenol from clove seeds to perform a quantitative approach aimed at comparing results obtained by external and internal calibration procedures. Therefore, this experiment proved to be very effective tool to enhance students awareness on the need to understand different types of calibration in GC and on how to avoid common experimental errors, and to find the best ways to eliminate their interference during the quantitative analysis phase.

Palavras-chave : GC; quantitative analysis; teaching.

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