V. G. Berezkin

Capillary thin-layer chromatography of antibacterial nitrofuran derivatives

A new version of thin-layer chromatography, capillary thin-layer chromatography, which is similar to traditional planar chromatography in the idea of detection of sorbate bands and to high-performance column chromatography in the implementation of the chromatographic process (in a thin capillary packed with a sorbent), was developed. The chromatographic characteristics of antibacterial nitrofuran derivatives under the conditions of planar and capillary thin-layer chromatography were studied and compared from the viewpoint of performance, reproducibility, and consumption of the sorbent and eluent.

A variation of circular thin-layer chromatography with closed adsorbent layer

A new variation of circular thin-layer chromatography with an adsorbent layer closed during the experiment and a simple dismountable device for implementation of this technique are suggested.

Use of Thin-Layer Chromatography with Closed Sorption Layer for the Determination of Volatile Compound

For decades, it has been believed in Russian and foreign scientific and technical literature that conventional thin-layer chromatography (TLC) cannot be used for the determination of volatile compounds. Experiments have shown that the version of TLC with a closed adsorbent layer proposed recently at the Topchiev Institute, Russian Academy of Sciences, is applicable to the investigation of the group content of aromatic hydrocarbons in gasoline. It has been found that the best resolution of analyte groups of compounds can be achieved by means of circular chromatography and sample introduction into a chromatographic system, using the frontal variant of chromatography.