The earliest stationary phases were relatively large particles (40-50 µm) of silica, for normal phase chromatography, and polymers (mainly polystyrene-divinylbenzene) or silica with coatings of a ...

Microgas chromatography separation columns typically employ channels with fixed cross sections. In this article, we demonstrate unidirectional microfabricated width-modulated columns (μWMC) that ...

Solid Stationary Phase Porous Layer Open Tubular (PLOT) Columns for analysis of volatiles requiring optimum selectivity. These columns are configured for applications employed for gas and ...

As mentioned in the previous section, COF powders as stationary phases for chromatography usually present the drawbacks of their wide particle size distribution and the irregularity of their shape, ...

Gas chromatography columns produced using microelectromechanical systems (MEMS) technology makes it possible to achieve very narrow widths as it improves the separation efficiency. However, coating ...

This work presented a new PEG modified calix [4]arene stationary phase (C4A-PEG-2PTSC) for gas chromatographic (GC) separations. The statically coated C4A-PEG-2PTSC column exhibited moderate polarity ...

High‐performance liquid chromatography (HPLC) and chiral gas chromatography (GC) are two methods of separation extensively used in synthetic, pharmaceutical, medicinal, and supramolecular chemistry.

Introduction The principle of chromatography is the interaction of an analyte with a stationary phase, which captures, binds, or interacts with the analyte. To mention are, for example, ion-exchange, ...