Reduction of Plug Length in Capillary Gas Chromatography Using an On-Column Micro-Trap

Two-Dimensional Gas Chromatography. Concepts, Instrumentation, and Applications - Part 2: Comprehensive Two-Dimensional Gas Chromatography

“…The benefits of reduction in the width of a chromatographic peak have been known for a long time [155]. Solute focusing, in particular cryogenic focusing is particularly effective in high speed GC where sample input bandwidths must be minimized [156,157].…”

Gas chromatography

“…For direct sampling into high resolution and capillary columns, samples may be diluted with a nonvolatile solvent and injected into a small packed precolumn (126). Microcoding traps have been employed with packed or capillary columns (724) and a short section of the capillary column itself has been used (30). The injected sample is condensed in the trap and then heated to release the sample rapidly.…”

“…A system was described for dead-volume-free connection of glass capillary columns to commercial gas chromatographs (106). An improvement in resolution and apparent column efficiency was obtained by injection of the solute into a cryo- genic microtrap near the column inlet, followed by rapid heating of the trapped sample to desorb and vaporize it (30).…”