Elution order in gas chromatography

✍ Scribed by Mehran, Mehrzad ;Cooper, William J. ;Golkar, Nahid ;Nickelsen, Michael G. ;Mittlefehldt, Eric R. ;Guthrie, Edward ;Jennings, Walter

• Book ID: 102894091
• Publisher: John Wiley and Sons
• Year: 1991
• Tongue: English
• Weight: 520 KB
• Volume: 14
• Category: Article
• ISSN: 0935-6304
• DOI: 10.1002/jhrc.1240141109

✦ Synopsis

Abstract

The retention behavior of a heterogeneous group of solutes has been examined on seven different stationary phases under isothermal and temperature‐programmed conditions. Both Δ__H__~v~ (enthalpy of solute vaporization from the stationary phase) and Δ__S__~v~ (entropy of solute vaporization from the stationary phase) values were determined for each solute – stationary phase combination under isothermal conditions. Both program rate and carrier gas velocity were shown to affect solute elution order. Unless these and other experimental factors discussed are controlled, column equivalency studies based on solute elution order have dubious value.