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Factors affecting peak shape in comprehensive two-dimensional gas chromatography with non-focusing modulation
Citation
Harvey, PM and Shellie, RA, Factors affecting peak shape in comprehensive two-dimensional gas chromatography with non-focusing modulation, Journal of Chromatography A, 1218, (21) pp. 3153-3158. ISSN 0021-9673 (2011) [Refereed Article]
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DOI: doi:10.1016/j.chroma.2010.08.029
Abstract
In the case of a non-focusing modulator for comprehensive two-dimensional gas chromatography (GC x GC), the systematic distortions introduced when the modulator loads the second-dimension column give rise to a characteristic peak shape. Depending on the operating conditions this systematic distortion can be the dominant component of the second-dimension elution profiles in the GC x GC peak. The present investigation involved a systematic investigation of peak shape in pulsed-flow modulation (PFM)-GC x GC. It is shown that low flow ratio can lead to significant peak skewing and increasing the flow ratio reduces the magnitude of peak skewing. Validation of the peak shape model is made by comparison with experimental data. The residuals from the fitting process (normalised to the maximum detector response) vary between -1.5% and +2.6% for an isothermal model and between -1.0% and +3.0% for a temperature-programmed model.
Item Details
Item Type: | Refereed Article |
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Research Division: | Chemical Sciences |
Research Group: | Analytical chemistry |
Research Field: | Separation science |
Objective Division: | Expanding Knowledge |
Objective Group: | Expanding knowledge |
Objective Field: | Expanding knowledge in the chemical sciences |
UTAS Author: | Harvey, PM (Mr Paul Harvey) |
UTAS Author: | Shellie, RA (Associate Professor Robert Shellie) |
ID Code: | 72670 |
Year Published: | 2011 |
Web of Science® Times Cited: | 16 |
Deposited By: | Chemistry |
Deposited On: | 2011-08-30 |
Last Modified: | 2017-10-31 |
Downloads: | 0 |
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