Are we using the full resolving power of capillary GC?

✍ Scribed by Neu, H. J. ;Zinburg, R.

• Publisher: John Wiley and Sons
• Year: 1979
• Tongue: English
• Weight: 325 KB
• Volume: 2
• Category: Article
• ISSN: 0935-6304
• DOI: 10.1002/jhrc.1240020705

✦ Synopsis

Abstract

Precise evaluation of the chromatographic data by means of the relative retention will allow the full use of the resolution achieved by capillary columns. In practice, retention‐index determination is best suited for this purpose. The reproducibility of retention‐index determination strongly depends, among other factors, on the accuracy of retention time measurement. A reproducibility of ±0,05 i.u. can be easily achieved with modern gas chromatographic equipment, provided the retention times can be measured with an accuracy of at least ±0.01%. This can be shown by error propagation analysis of retention‐index calculation performed with the aid of a programmable pocket calculator.