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The effective diffusion coefficient of a non-retained compound (uracil) was measured with the peak parking (PP) method for two series (4.6mm×100mm and 2.1mm×100mm) of six replicate columns packed with the same batch of superficially porous 2.6μm Kinetex-C 18 particles. The abilities of four different models of effective diffusion in packed beds to account for the experimental data are compared...
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