Ghost Peaks in Gas Chromatography Part 5: Impact of Injection and Oven Parameters During Injection

Author(s): Jaap de Zeeuw
Restek Corporation

Published By: Separation Science

Issue: vol. 5, issue 12

Year of Publication: 2013

Link: http://www.sepscience.com/Information/Archive/All-Articles/2581-/Ghost-Peaks-in-Gas-Chromatography-Part-5-Impact-of-Injection-and-Oven-Parameters–During-Injection

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Abstract: In gas chromatography, 80% of the trouble is caused by the injection system. Also here we have seen that by degradation of sample components, O-rings, back flash and septa, extra peaks can be generated. Besides this, the conditions used for injecting the sample can also produce serious extra peaks.

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

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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

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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.

Ghost Peaks in Gas Chromatography Part 2: The Injection Port

Author(s): Jaap de Zeeuw
Restek Corporation

Published By: Separation Science

Issue: vol. 5, issue 5

Year of Publication: 2013

Link: http://www.sepscience.com/Techniques/GC/Articles/2009-/Ghost-Peaks-in-Gas-Chromatography-Part-2-The-Injection-Port

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Abstract: In Part I, we discussed possible sources for ghost peaks related to the carrier gas and the gas lines. Here we move into the injection port itself as this is a big source for “trouble”. The injection of the sample is responsible for > 80% of the “troubles” that are experienced in gas chromatography. In the process of rapid evaporation of the sample, several things can go wrong.

Ghost Peaks in Gas Chromatography Part I: The Carrier Gas and Carrier Gas Lines

Author(s): Jaap de Zeeuw
Restek Corporation

Published By: Separation Science

Issue: vol. 5, issue 2

Year of Publication: 2013

Link: www.sepscience.com/Techniques/GC/Articles/1454-/Ghost-Peaks-in-Gas-Chromatography-Part-I-The-Carrier-Gas-and-Carrier-Gas-Lines

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Abstract: We get always a number of inquiries from customers that see peaks show up in their chromatogram when they do not inject them. There are several sources for these “ghost peaks,” which we will discuss in several articles. Part I focuses on the carrier gas and carrier gas lines.