An analyte is found to elute from a reversed-phase column with a retention factor of 12.5 when a 20% ethanol/80% water mixture is used as the mobile phase. What retention factor is expected for this same analyte if the mobile phase is changed to a 10% ethanol/90% water mixture? Solvent H20 CH3CN CH3OH THF 10.2 5.8 5.1 4.0 O A. 48.6 O B. 6.3 O C. 3.2 O D. 24.6

An analyte is found to elute from a reversed-phase column with a retention factor of 12.5 when a 20% ethanol/80% water mixture is used as the mobile phase. What retention factor is expected for this same analyte if the mobile phase is changed to a 10% ethanol/90% water mixture? Solvent H20 CH3CN CH3OH THF 10.2 5.8 5.1 4.0 O A. 48.6 O B. 6.3 O C. 3.2 O D. 24.6

Principles of Instrumental Analysis

7th Edition

ISBN:9781305577213

Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Chapter27: Gas Chromatography

Section: Chapter Questions

Problem 27.24QAP

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