The effect of the frictional heat on retention and efficiency inthermostated or insulated chromatographic columns packed withsub-2-um particles

Lambert, Nándor and Felinger, Attila (2018) The effect of the frictional heat on retention and efficiency inthermostated or insulated chromatographic columns packed withsub-2-um particles. JOURNAL OF CHROMATOGRAPHY A, 1565. pp. 89-95. ISSN 0021-9673

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Abstract

The mass-transfer properties of a core-shell packing material with 1.6 �m particle diameter, and thatof a fully porous packing material with 1.7 um particle diameter were investigated and compared. Thefirst absolute and the second central moments of the peaks of the homologous series of alkylbenzenes,over a wide range of mobile phase velocities were measured and used for the calculation of the mass-transfer coefficients. For the evaluation of the band broadening caused by the thermal dissimilarities, themeasurements were carried out under thermostated conditions and also at near adiabatic insulation ofthe columns.

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