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A novel injection technique for the split/splitless gas chromatography inlet
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Analytical Chemistry.
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Analytical Chemistry.
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Analytical Chemistry.
(English)Manuscript (Other academic)
National Category
Analytical Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-8430OAI: oai:DiVA.org:kth-8430DiVA: diva2:13746
Note
QC 20101105Available from: 2008-05-13 Created: 2008-05-13 Last updated: 2010-11-05Bibliographically approved
In thesis
1. Improved Techniques for Sampling and Sample Introduction in Gas Chromatography
Open this publication in new window or tab >>Improved Techniques for Sampling and Sample Introduction in Gas Chromatography
2008 (English)Licentiate thesis, comprehensive summary (Other scientific)
Abstract [en]

Sampling and sample introduction are two key steps in quantitative gas chromatography. In this thesis, a development of a previously described sampling technique as well as a novel concept for sample introduction in gas chromatography are presented. The thesis is based on two papers.

Paper I describes a method for preparing physically mixed polymers for use as sorbent phases in open tubular trapping of gaseous analytes. The concept is based on mechanical disintegration and mixing of solid or liquid poly(ethylene glycol), PEG, into poly(dimethylsiloxane), PDMS, in a straightforward manner. The resulting mixture exhibits a higher affinity towards polar analytes, as compared to pure PDMS.

Paper II describes a novel approach to liquid sample introduction with the split/splitless inlet, used in gas chromatography. Classical injection techniques struggle with discrimination of high boiling analytes and poor repeatability of the injected amount of analytes. The presented injection technique utilizes high voltage to obtain a spraying effect of the injected liquid. The spraying effect can be achieved with a cold needle, which is unprecedented for gas chromatographic injections. The cold needle spraying results in highly repeatable injections, free from discrimination of high boiling analytes.

Place, publisher, year, edition, pages
Stockholm: KTH, 2008. 32 p.
Series
Trita-CHE-Report, ISSN 1654-1081 ; 2008:40
Keyword
Gaskromatografi, Provupparbetning, Provintroduktion
National Category
Analytical Chemistry
Identifiers
urn:nbn:se:kth:diva-4744 (URN)978-91-7178-978-5 (ISBN)
Presentation
2008-05-28, E2, E-huset, Lindstedtsvägen 3, Stockholm, 10:00
Opponent
Supervisors
Note
QC 20101105Available from: 2008-05-13 Created: 2008-05-13 Last updated: 2010-11-05Bibliographically approved

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CiteExportLink to record
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  • apa
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More styles
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Output format
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