LCGC UST
|Articles|September 1, 2004

LCGC Europe

  • LCGC Europe-09-01-2004
  • Volume 17
  • Issue 9

More Speed, Better Precision, Higher Sensitivity: Why Buy a New Gas Chromatograph?

This article is an adaptation of one written in the German publication Nachrichten aus der Chemie and discusses how gas chromatography instrumentation, columns and techniques have improved over the past 10–15 years, making even relatively new equipment obsolete for many applications. In particular, the authors look at how older equipment is unsuitable for fast GC, better trace analysis and comprehensive multidimensional GC.

Articles in this issue

about 22 years ago

The Retention Gap Effect

about 22 years ago

A Century of Separation Science

about 22 years ago

Divide and Conquer

about 22 years ago

Introducing a Long-Overdue Column

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.