Two‐dimensional capillary electrophoresis‐thin layer chromatography separations of amino acid enantiomers using electro‐filament transfer

Retention in Porous Layer Pillar Array Planar Separation Platforms

“…We see in the second dimension separation of analytes which were coretained in the first dimension, although there is a staggered effect due to a lateral vector in the mobile phase flow of the second dimension. In order to be considered a comprehensive 2D separation system, three criteria must be met: transfer from one dimension to the other must result in minimal loss of analyte or degradation of efficiency, the sample components do not recombine during transfer or during the separation in the second dimension, and the separations in the two dimensions must occur by different mechanisms . Because both dimensions occur on one array with no need for transfer, and the solvent flow in the second dimension occurs perpendicular to the first, our system satisfies the first two conditions.…”

Liquid phase interfacing and miniaturization in matrix-assisted laser desorption/ionization mass spectrometry

“…A disadvantage of electrospray deposition, the wide spreading of sample over the MALDI target, may be avoided by operation in the electrofilament mode [86][87][88]. Here, the finely controlled reduced distance of the spraying tip from the deposition substrate prevented formation of the charged droplets and resulted in the formation *20 mm wide liquid filament instead.…”

Erratum: Aggregation Behaviors of Tricarbocyanine dye in Water and in AOT Reverse Micelles

“…Its advantages such as short analysis time, low reagent and environmentally friendly solvent consumption, and facility in creating an available method and in column regeneration make this technique popular. Besides all these advantages high resolution and selectivity obtained in CE are especially important factors for chiral separations and enantioselective analyses because of their completely different pharmacokinetic, pharmacodynamic and possible toxic effects in the human body 1–4. In general, commercial instruments with silica capillary columns in the range of 25–140 cm of total length are used for CE applications.…”