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a) The figure that follows is an idealized enlargement of the region near the cinnamaldehyde peak. Determine the retention time for cinnamaldehyde. (b) From the figure in part (a), determine the number of theoretical plates for the column.

a) The figure that follows is an idealized enlargement of the region near the cinnamaldehyde peak. Determine the retention time for cinnamaldehyde. (b) From the figure in part (a), determine the number of theoretical plates for the column.

Fundamentals Of Analytical Chemistry
Fundamentals Of Analytical Chemistry
9th Edition
ISBN:9781285640686
Author:Skoog
Publisher:Skoog
Chapter32: Gas Chromatography
Section: Chapter Questions
Problem 32.23QAP
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(a) The figure that follows is an idealized enlargement of the region near the cinnamaldehyde peak. Determine the retention time for cinnamaldehyde.

(b) From the figure in part (a), determine the number of theoretical plates for the column.

 

Challenge Problem: Cinnamaldehyde is the component responsible for cinnamon flavor. It is also a potent antimicrobial compound present in essential oils (see M. Friedman, N.Kozukue, and L. A. Harden, J. Agric. Food Chem., 2000, 48, 5702, DOI: 10.1021/ jf000585g). The GC response of an artificial mixture containing six essential oil components and methyl benzoate as an internal standard is shown in the figure. 100% Thymol Eugenol Essential oil Methyl benzoate Carvacrol components Carvone Cinnamaldehyde Linalool 11:43 18:23 25:03 31:43 38:23 Retention time, min Chromatogram. (From M. Friedman, N. Kozukue, and L.A. Harden, J. Agric. Food Chem., 2000, 48, 5702. Copyright 2000 American Chemical Society.) Chromatogram. (From M. Friedman, N. Kozukue, and L.A. Harden, J. Agric. Food Chem., 2000, 48, 5702. Copyright 2000 American Chemical Society.) (a) The figure that follows is an idealized enlargement of the region near the cinnamaldehyde peak. Determine the retention time for cinnamaldehyde. 18 18.2 18.4 18.6 18.8 19 19.2 19.4 19.6 19.8 20 Time, min Enlarged chromatogram. (b) From the figure in part (a), determine the number of theoretical plates for the column. Total ion current, % Total ion current, %
Transcribed Image Text:Challenge Problem: Cinnamaldehyde is the component responsible for cinnamon flavor. It is also a potent antimicrobial compound present in essential oils (see M. Friedman, N.Kozukue, and L. A. Harden, J. Agric. Food Chem., 2000, 48, 5702, DOI: 10.1021/ jf000585g). The GC response of an artificial mixture containing six essential oil components and methyl benzoate as an internal standard is shown in the figure. 100% Thymol Eugenol Essential oil Methyl benzoate Carvacrol components Carvone Cinnamaldehyde Linalool 11:43 18:23 25:03 31:43 38:23 Retention time, min Chromatogram. (From M. Friedman, N. Kozukue, and L.A. Harden, J. Agric. Food Chem., 2000, 48, 5702. Copyright 2000 American Chemical Society.) Chromatogram. (From M. Friedman, N. Kozukue, and L.A. Harden, J. Agric. Food Chem., 2000, 48, 5702. Copyright 2000 American Chemical Society.) (a) The figure that follows is an idealized enlargement of the region near the cinnamaldehyde peak. Determine the retention time for cinnamaldehyde. 18 18.2 18.4 18.6 18.8 19 19.2 19.4 19.6 19.8 20 Time, min Enlarged chromatogram. (b) From the figure in part (a), determine the number of theoretical plates for the column. Total ion current, % Total ion current, %
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