Impact of GC Parameters on the Separation Part 2: Choice of Column Internal Diameter

Author(s): Jaap de Zeeuw
Restek Corporation

Published By: Separation Science

Issue: vol. 6, issue 4

Year of Publication: 2014

Link: http://www.sepscience.com/Information/Archive/All-Articles/3351-/Impact-of-GC-Parameters-on-The-Separation-Part-2-Choice-of-Column-Internal-Diameter

For the full print issue, visit http://www.sepscience.com/docs/Bespoke/Editions/SepSci/SepSci_0714.pdf

Abstract: In Part 1 of this series, we focused on how to select the stationary phase, which is one of the seven important parameters we need to understand. Once the most interesting stationary phase is selected, the column dimensions must be considered. Here column length, diameter, and film thickness are the key parameters. In this article, we turn our attention to the column internal diameter and its relevance.

Ghost Peaks in Gas Chromatography Part 4: Reactivity in The Column While Doing Separations

Author(s): Jaap de Zeeuw
Restek Corporation

Published By: Separation Science

Issue: vol. 5, issue 10

Year of Publication: 2013

Link: http://www.sepscience.com/Information/Archive/All-Articles/2467-/Ghost-Peaks-in-Gas-Chromatography-Part-4-Reactivity-in-The-Column-While-Doing-Separations

For the full print issue, visit http://www.sepscience.com/docs/Bespoke/Editions/SepSci/Sepsci1013eu.pdf?utm_source=iContact&utm_medium=email&utm_campaign=eLearning%20Newsletter%20-%20Europe%20Sep%20Sci&utm_content=

Abstract: In the last issues we discussed possible sources for ghost peaks related to the carrier gas, gas lines, injection port and parts, degradation, and the column. Here we move onto several other contributions that are not as obvious as the former options.

Ghost Peaks in Gas Chromatography Part 3: Sample Contamination and Ghost Peaks Formed by The Stationary Phase Itself

Author(s): Jaap de Zeeuw
Restek Corporation

Published By: Separation Science

Issue: vol. 5, issue 7

Year of Publication: 2013

Link: http://www.sepscience.com/Information/Archive/All-Articles/2198-/Ghost-Peaks-in-Gas-Chromatography-Part-3-Sample-Contamination-and-Ghost-Peaks-Formed-by-The-Stationary-Phase-Itself

For the full print issue, visit http://www.sepscience.com/docs/Bespoke/Editions/SepSci/Sepsci0713eu.pdf?utm_source=iContact&utm_medium=email&utm_campaign=eLearning%20Newsletter%20-%20Europe%20Sep%20Sci&utm_content=

Abstract: In the last issue we discussed possible sources for ghost peaks related to the carrier gas and the gas lines. The injection port septa, O-rings can also be a source for ghost peaks. Here we look at the sample itself and the different “contaminations” that can result in unwanted “extra” peaks. Also the stationary phase in the column can play an interesting role in ghost-peak formation.

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