Enantioseparation of Neutral Compounds on a Quinine Carbamate-Immobilized Zirconia in Reversed-Phase Capillary Electrochromatography
نویسندگان
چکیده
منابع مشابه
Monolithic columns with mixed modes of reversed-phase and anion-exchange stationary phase for capillary electrochromatography.
A capillary electrochromatography (CEC) monolithic column with mixed modes of reversed-phase and anion-exchange stationary phases was prepared by in situ polymerization of 2-(methacryloxy)ethyltrimethylammonium methyl sulfate (MEAMS) and ethylene dimethacrylate (EDMA) in a binary porogenic solvent consisting 1-propanol and 1,4-butanediol. The ammonium groups on the surface of the stationary pha...
متن کاملEnantioseparation of tetrahydropalmatine and Tröger's base by molecularly imprinted monolith in capillary electrochromatography.
Two chiral compounds, Tröger's base and tetrahydropalmatine, were enantioseparated on the (5S, 11S)-(-)-Tröger's base and l-tetrahydropalmatine imprinted monolithic capillary columns with CEC, respectively. The monoliths were prepared by in situ thermal-initiated copolymerization of methacrylic acid (MAA) and ethylene dimethacrylate (EDMA). After optimizing the ratio of porogens (toluene and do...
متن کاملSimultaneous multiple enantioseparation with a one-pot imprinted microfluidic channel by microchip capillary electrochromatography.
A multi-template imprinted microchannel was prepared by a one-pot in situ imprinting process. The imprinted microchannel led to a novel chip-based strategy for simultaneous multiple enantioseparation. The one-pot imprinting process formed a multi-template imprinted porous thin layer (about 2 μm) on the inner wall of the capillary, which was characterized by scanning electron microscopy, infrare...
متن کاملElectrochromatography in microchips packed with conventional reversed-phase silica particles.
This paper shows the applicability of a disposable and inexpensive microfluidic chip for electrochromatographic separations. The chip, recently developed by us for chip-based LC, was fabricated from PDMS incorporating conventional chromatographic RP silica particles (C18) without the use of frits. Three cephalosporin antibiotics were used to demonstrate the applicability of the chip-based chrom...
متن کاملHydrophilic Interaction Capillary Electrochromatography for the Separation of Polar Compounds
and Yan (5) reported that they successfully separated high polarity explosives using CEC with nonporous C18-coated material and a mobile phase with a low concentration of organic modifier and SDS added to the mobile phase to increase the wettability of the particle surface. Zhang and colleagues (9) also reported that very polar compounds could be separated by mixed-packing CEC with a stationary...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Bulletin of the Korean Chemical Society
سال: 2010
ISSN: 0253-2964
DOI: 10.5012/bkcs.2010.31.01.082