LCGC UST
|Articles|September 1, 2000

LCGC North America

  • September 2000
  • Volume 18
  • Issue 9
  • Pages: 968–975

Coupling Static Headspace Sampling to High-Speed Gas Chromatography

The authors describe the design and evaluation of a new sysstem to quickly analyze the headspace of a previously equilibrated vial. Specifically, they report how routine analysis of volatiles from fruit juices can be sampled and concentrated using a static headspace method and rapidly analyzed by high-speed GC.

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Related to this article

Figure 2. Split injection used to measure triplicate test of MTBE, hexane, o-xylene, and 1-methylnaphthalene comparing different solvents (methanol, methylene chloride) and column insertion distances starting with 0.5 mm, 5.0 mm, 10.0 mm, 15 mm, and 20.0 mm. Methanol had the best performance at the 5.0 mm insertion distance and methylene chloride looked slightly better at the 0.5 mm. We would still recommend not going below the 5.0 mm manufacturer recommended insertion distance.
Revisiting insertion distance for methanol and methylene chloride in GC analysis and confirming that insertion depth strongly affects response and reproducibility.