Reduction of Analysis Time in Capillary GC (Part 4) Factors Affecting Analysis Time (Isothermal Analysis)

Introduction

Reducing the analysis time is the simplest way to enhance the productivity of gas chromatography. However, little information is available on how the analysis time and resolution change when certain analysis conditions are altered. As basic information on reducing analysis time, this Application News introduces the results of investigations into how the analysis time and resolution change due to changes of the column temperature, carrier gas linear velocity, column length, or liquid-phase film thickness in isothermal analysis. The retention time and resolution for toluene, ethyl benzene, m-xylene + p-xylene, and o-xylene were investigated using a nonpolar column.

June 16, 2003 GMT