Impact of a pressure drop on a monolithic capillary column on the efficiency and separation ability of the column View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2011-01

AUTHORS

V. E. Shiryaeva, A. A. Korolev, T. P. Popova, A. A. Kurganov

ABSTRACT

The impact of inlet and outlet column pressures on column separation properties was investigated for monolithic capillary column in gas chromatography. It was demonstrated that the classical Van Deemter equation does not allow us to make a clear choice of the optimal separation conditions. More relevant data can be obtained from the dependence of the height equivalent to a theoretical plate (HETP) on the inlet and outlet column pressures. The dependence ensures that the minimum HETP value can be achieved at high values of inlet and outlet column pressures, but the ratio of the pressures must approach 1. The efficiency of the column under these optimal conditions can exceed by 25–35% the column efficiency under the optimal conditions found using the classical Van Deemter plot. It was shown that a decrease in inlet and outlet column pressures even at a relative pressure close to 1 leads to an increase in HETP and the loss of column separation ability. More... »

PAGES

117-124

References to SciGraph publications

Identifiers

URI

http://scigraph.springernature.com/pub.10.1134/s0036024411010274

DOI

http://dx.doi.org/10.1134/s0036024411010274

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1013187742


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