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|Articles|April 1, 2000

LCGC North America

  • April 2000
  • Volume 18
  • Issue 4
  • Pages: 384–390

Basic GC Measurements and Calculations

This month's column reviews some basic GC measurements and calculations that can be applied to questions of column quality. By understanding the analytical process, chromatographers can improve the quality of their results.

LCGC 18(4), 384–390 (2000).

Articles in this issue

over 26 years ago

New Chromatography Columns and Accessories at the 2000 Pittsburgh Conference, Part II

over 26 years ago

Starting Out Right, Part V – Changing Column Conditions

over 26 years ago

Gadgetry for Gas Chromatography

over 26 years ago

Configuring HPLC Systems for LC–MS

over 26 years ago

Ion Chromatography Using Anion Exchangers Modified with Anionic Polysaccharides

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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 Column Insertion Distance
Revisiting insertion distance for methanol and methylene chloride in GC analysis and confirming that insertion depth strongly affects response and reproducibility.
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