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We report on a series of computer simulations that have been made to explore the operation and performance limits of a periodically heated and cooled trapping segment (liquid analog of the modulator device used in GC×GC) interfacing the separation column and the detector. The initial peak width and the retention of the molecules on the trapping segment have the most important influence on the trapping...
A novel design approach for optimizing the shape of microfabricated pillar columns for LC is presented. 2‐D flow simulations are performed with a focus on electrokinetically driven flow, in order to evaluate the performance of the new method. The proposed foil shape is compared with geometrical shapes known from the literature, for various arrangements. It yields a much more uniform velocity field...
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