J. Planar Chromatogr. 15, 244-251 (2002). TLC and HPTLC of alkylamides, phenylpropanoids and fructofuranosides from Echinacea species and common adulterants on silica gel (predeveloped with methanol and dried at 120°C). TLC of alkylamides with hexane - ethyl acetate 2: 1. Detection under UV 254 nm and, after derivatization with anisaldehyde reagent, in white light and at UV 366 nm. HPTLC of phenylpropanoids (e.g. caftaric acid, cynarin, chicoric acid, chlorogenic acid, caffeic acid, echinacoside) with ethyl acetate - ethyl methyl ketone - formic acid - water 5:3:1:1 with chamber saturation. Visualization under UV 366 nm after derivatization with natural products reagent (diphenylboric acid 2-aminoethylester). HPTLC of fructofuranosides with n-butanol - 2-propanol - water 1:3:1 without chamber saturation. Visualization by use of aniline-diphenylamine reagent. These HPTLC methods have been developed and peer verified in accordance with the AOAC guidelines.

J. Chromatogr. A 1440, 240-248 (2016). Our previous report showed that RP-18 phases for HPTLC provide complex retention mechanisms based on various polar and nonpolar interactions. Here we show that for the chromatography of peptides, due to mixed-mode properties of these adsorbents, there is a simple way to obtain inversion of a separation system (from reversed-phase to normal-phase, and vice versa). The system inversion leads to a significant change of selectivity, which may be useful in 2D separation of complex samples of basic/amphoteric compounds such as peptides. This results from the fact, that RP-18 phases for HPTLC may be used in hydrophilic interaction chromatography (HILIC) or RP chromatography, depending on the mobile phase composition.

(Studies on the dependence of the chromatographic behaviour on chemical structure for some p-substituted aniline and acetanilide derivatives). TLC of p-chloro-acetanilide, phenacetine, p-phenetidine, p-chloro-aniline, p-(N-acetyl-amino)-phenol on silica with ether. Correlation of structure and chromatographic properties acc. to the Snyder equation.

J.Liquid Chromatogr. 6, 165-177 (1983). TLC of 48 metal ions on silica impregnated with tri-n-butylphosphate, with 1N HCL, 1N HNO3, iN H2S04, 0.1M oxalic acid, 0.1M tartaric acid, 0.1M citric acid.

J. Planar Chromatogr. 3, 322-325 (1990). The linear equation which enables the type of molecular interactions predominating in a chromatographic system to be defined has been investigated using binary mobile phases comprising pairs of solvents with small differences in polarity. The composition of the adsorbent surface was obtained from the excess adsorption isotherme and utilized to analyze the mechanism of the chromatographic separation. TLC system: silica with three different binary mixtures of cyclohexane - benzene, heptane - chloroform, and trichloroethylene - benzene.

Chromatographia 48, 511-516 (1998). Study of the effects of title factors important in ion-pair, HPLC towards ion-pair TLC, using tetramethyl and cetyltrimethyl ammonium salts as ion-pairing reagents and silica gel and chemically bonded silica gel as the stationary phase, impregnated with ion-pairing reagent or treated with buffer at different concentrations, using mobile phase buffer, salts and ion-pairing reagent. Discussion of the migration behavior of different benzoic acids, etc.

J. Planar Chromatogr. 24, 454-462 (2011). The scientometric study of the changes in basic chromatographic characteristics was carried out based on the analysis of papers published from 1980 to 1990 and from 2000 to 2010 in the following journals: J. Planar Chromatogr., Chromatographia, Anal. Chem., J. Anal. Chem., Russian J. Physical Chem., Sorption and Chromatographic Processes (Russia) as well as the abstracts of the articles published in CAMAG Bibliography Service (CBS). Based on the contents of the published articles the main analytical characteristics of planar chromatography were described: type of chromatographic chamber, variants of the plate used, development, previous preparation of the chamber and the plate, application of sample, composition of mobile phases, etc. The results obtained are of interest for analysts, manufacturers and designers of chromatographic equipment and apparatus for planar chromatography and other specialists working in the different areas of planar chromatography.

Chromatographia 21, 79-82 (1986). TLC of aromatic DL-amino acids on cellulose with pyridine - ethanol - water in various proportions. Discussion of the relationship between the resolution of DL-amino acids and cellulose conformation change under hydrophobic conditions.