J. Planar Chromatogr. 18, 199-202 (2005). Evaluation of two models of retention in liquid adsorption chromatography. Terms related to adsorption from two equations based on different retention models were compared. The terms were calcutated for selected substances in four chromatographic systems with a different polar modifier. Analysis of the data has proved the comparability of the terms and that they can be used interchangeably to describe adsorption phenomena. TLC of e.g. nitroanilines, nitrotoluidines, nitrophenols on silica gel in horizontal chambers with heptane - ethyl acetate, heptane - 1,4-dioxane, heptane - tetrahydrofuran and heptane - ethylene chloride. Visualization with iodine vapor, detection by scanning.

J. Sep. Sci. 34, 1-9 (2011). Quantitative structure-retention (QSRR) and quantitative structure-activity relationship (QSAR) studies were performed to correlate the molecular characteristics of seven pairs of cis-trans isomeric bis-steroidal tetraoxanes with their reversed-phase thin-layer chromatography retention and their antiproliferative activity. TLC on 1) RP-18 with mobile phases of 0-14 vol% water in methanol (increment 2 %), 10-30 vol% water in acetone (increment 5 %) and 10-35 vol% water in dioxane (increment 5 %) and on 2) cyano phase with mobile phases of 10-30 vol% water in methanol (increment 5 %), 10-40 vol% water in acetone (increment 5 %). Detection by spraying with sulfuric acid 50 %, followed by heating. In all instances, it was found that the retention of the investigated compounds decreased with increasing concentrations of the organic modifier in the mobile phase.

J. Liq. Chrom. Rel. Tech. 38, 485-491 (2015). HPTLC of (1) salicylic acid and (2) acetylsalicylic acid on RP-18W with mixtures of methanol and water of pH 2.6; the content of methanol in the mobile phase was gradually varied by 10 % from 20–100 % (v/v). The method allowed the estimation of the lipophilicity of (1) and (2).

J. Planar Chromatogr. 29, 239-246 (2016). HPTLC of ziprasidone and its 5 impurities on silica gel with toluene – methanol – glacial acetic acid 15:1:1. Qualitative analysis by absorbance measurement at 250 and 320 nm. The hRF values of ziprasidone and its impurities were 19, 11, 16, 7, 41 and 33, respectively. The retention behavior of ziprasidone and its five impurities was investigated by employing the experimental design and quantitative structure–retention relationship. See also J. Liq. Chromatogr. Relat. Technol. 39, 271-276 (2016).

J. Planar Chromatogr. 31, 99-104 (2018). HPTLC of synthetic pyrethroids (allethrin, cyfluthrin, cyhalothrin, cypermethrin, deltamethrin, fenvalerate, and permethrin) on silica gel and RP-18 with the following systems: a) RP-TLC with acetone – water in the ratio of 20 % to 80 %, acetonitrile – water 50 % to 100 %, tetrahydrofuran – water 50 % to 100 %; b) NP-TLC with acetone – petroleum ether 20 % to 100 %, tetrahydrofuran – petroleum ether 20 % to 80 %, and acetonitrile – petroleum ether 0 % to 100 % (v/v). The best chromatographic system to predict log P is RP-TLC and a mixture of tetrahydrofuran and water.

Chromatographia 18, 441-444 (1984). Studies on the migration behaviour of metal complexes of meso-tetrakis (p-tolyl) porphyrin in HPTLC systems with cellulose and silica gel and various solvents of relatively low polarity. TLC on silica with a carbon disulfide - m-xylene mixture is recommended for the separation of the complexes.

J. Chromatogr. 354, 107-118 (1986). TLC of 20 diastereoisomeric compounds on silica with 46 different mobile phases. Detection by spraying with iodine - ether solution.

J. Chromatogr. 404, 73-85 (1987). Study of the relationships between the structure of NC1)- or NC4)-substituted 1,2,4-triazoles and their TLC behavior on silica. Linear correlations between RM and the logarithm of the molar fraction of strong solvent in 8 binary solvent systems for 5 pairs of positional isomers. Relationship between the retention order and the adsorption mechanisms of the molecules and the alkalinities of the triazole nuclei.