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Record number 40667
Title Spatially resolved transport properties in radially compressed bead packings studies by PFG NMR.
Author(s) Dusschoten, D. van; Tallarek, U.; Scheenen, T.W.J.; Neue, U.D.; As, H. van
Source Magnetic Resonance Imaging 16 (1998). - ISSN 0730-725X - p. 703 - 706.
Department(s) Biophysics
Publication type Refereed Article in a scientific journal
Publication year 1998
Abstract Pulsed field gradient (PFG) multi-echo (ME) and turbo spin-echo (TSE) imaging is used to study dispersive flow in radially compressed chromatographic columns packed with porous silica beads. By using the pulsed field gradient turbo spin-echo sequence spatially resolved displacement imaging can be accelerated by a factor of 16. The positive effect of homogeneous radial packing on flow velocity and dispersion is demonstrated. Small heterogeneities of only a few percent are shown to cause changes of the dispersion coefficient of up to 50%.
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