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Revision of the van deemter theory for diffusion and pressure drop in the gas phase
Provided that the flow rate of carrier gas in a gas chromatographic column is maintained constant and the pressure and the linear velocity are distributed as shown, and also the diffusion coefficient in gas phase is inversely proportional to the pressure, one can formulate the problem. Assuming that...
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Published in: | Journal of Chromatography A 1966-01, Vol.21, p.383-391 |
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Main Authors: | , |
Format: | Article |
Language: | English |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Provided that the flow rate of carrier gas in a gas chromatographic column is maintained constant and the pressure and the linear velocity are distributed as shown, and also the diffusion coefficient in gas phase is inversely proportional to the pressure, one can formulate the problem. Assuming that the solution is shown by a Gaussian distribution as given the above problem is converted into the intergration of the ordinary differential concerning the peak variance. The calculation provides a revised equation for gas chromatographic peak that includes the familiar Van Deemter theory as a limiting law. |
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ISSN: | 0021-9673 |
DOI: | 10.1016/S0021-9673(01)91330-5 |