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Striped covalent organic frameworks modified stationary phase for mixed mode chromatography.
Journal of Chromatography A, 2021Covalent organic frameworks (COFs) have showed expected potential in chromatographic separation due to unique structure and excellent performance. Nowadays, COF materials applied as chromatographic stationary phases is still in its infancy.
Yunchao Zheng +8 more
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Journal of Chromatography A, 2019
The performance of the Centrifugal Partition Chromatography (CPC) as a liquid-liquid chromatographic technique depends strongly on the two-phase solvent system used.
A. Fromme +3 more
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The performance of the Centrifugal Partition Chromatography (CPC) as a liquid-liquid chromatographic technique depends strongly on the two-phase solvent system used.
A. Fromme +3 more
semanticscholar +1 more source
Factors Affecting Mixed-Mode Retention Properties of Cation-Exchange Stationary Phases
Journal of Chromatography A, 2023Cation-exchange stationary phases were characterized in different chromatographic modes (HILIC, RPLC, IC) and applied to the separation of non-charged hydrophobic and hydrophilic analytes. The set of columns under investigation included both commercially available cation-exchangers and self-prepared PS/DVB-based columns, the latter consisting of ...
Matthias Schmitt +5 more
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Retention mechanisms on metallic stationary phases
Journal of Chromatography A, 1989Abstract An electron-rich, porous graphitic carbon stationary phase for high-performance liquid chromatography has been shown to act as an electron-pair acceptor of solutes under non-polar conditions. The application of delocalized electron bands as chromatographic substrates was extended to other conductors, namely a palladium metal stationary phase,
Barbara J. Bassler +2 more
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HPLC retention behavior on hydride‐based stationary phases
Journal of Separation Science, 2007AbstractTwo stationary phases attached to a silica hydride surface, cholesterol and bidentate C18, are investigated with a number of pharmaceutically related compounds in order to illustrate the various retention mechanisms that are possible for these bonded materials. The test solutes range from hydrophilic to hydrophobic based on log P (octanol/water
Joseph J, Pesek +2 more
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Retention of β blockers on native titania stationary phase
Journal of Separation Science, 2011AbstractIn recent years, metal oxides such as titania have been commercially available as chromatographic beds that can potentially be used to achieve novel separations of polar compounds. For example β blockers, which are more often encountered in environmental sciences, have a wide range of polarity, and their basic character leads to difficult ...
El Debs, Racha +4 more
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Isothermal retention indices on poly(3,3,3-trifluoropropylmethylsiloxane) stationary phases
Journal of Chromatography A, 2007Isothermal retention indices (I) of 56 solutes of varied chemical nature and polarity were determined by a well-proven accurate method on poly(3,3,3-trifluoropropylmethylsiloxanes) with trifluoropropyl group percentages between 0 and 50% within the 353-413 K temperature range.
Rosa, Lebrón-Aguilar +3 more
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Isothermal retention indices on poly(3-cyanopropylmethylsiloxane) stationary phases
Journal of Chromatography A, 2009Experimental isothermal retention indices (I) at 348, 363, 378 and 393 K of 52 solutes of varied polarity on seven different poly(cyanopropylmethylsiloxane) stationary phases with cyanopropyl group percentages between 0% and 75% have been determined by a well-proven, accurate method.
Ana María, Tello +3 more
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