1) Consider the data in the table below for chromatograms collected on different lengths of gas chromatography columns. Answer the following questions using Excel. L = 15 m L = 30 m L = 60 m Species tR (min) W1/2 (min) 4R (min) W1/2 (min) tR (min) W1/2 (min) 1 1.290 0.016 2.581 0.023 5.147 0.031 2 1.309 0.016 2.616 0.023 5.222 0.032 3 1.332 0.017 2.664 0.024 5.325 0.034 4 1.401 0.018 2.804 0.025 5.616 0.036 a. Calculate both the average number of plates and the average plate height (in µm) for each column, considering all four species. b. Calculate the measured resolution between peaks 1 and 2, 2 and 3, and 3 and 4 for each column.

1) Consider the data in the table below for chromatograms collected on different lengths of gas chromatography columns. Answer the following questions using Excel. L = 15 m L = 30 m L = 60 m Species tR (min) W1/2 (min) 4R (min) W1/2 (min) tR (min) W1/2 (min) 1 1.290 0.016 2.581 0.023 5.147 0.031 2 1.309 0.016 2.616 0.023 5.222 0.032 3 1.332 0.017 2.664 0.024 5.325 0.034 4 1.401 0.018 2.804 0.025 5.616 0.036 a. Calculate both the average number of plates and the average plate height (in µm) for each column, considering all four species. b. Calculate the measured resolution between peaks 1 and 2, 2 and 3, and 3 and 4 for each column.

Chemistry & Chemical Reactivity

10th Edition

ISBN:9781337399074

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter11: Intermolecular Forces And Liquids

Section11.6: Properties Of Liquids

Problem 1.2ACP

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1.5 x 103 uL ------> mL