J. Planar Chromatogr. 26, 147-152 (2013). TLC of poly(methylmethacrylate) (PMMA) on silica gel with acetonitrile binary solvent mixtures with carbon tetrachloride, toluene, methylene chloride, chloroform and dichloroethane. Mark-Kuhn-Houwink parameters for PMMAs, Snyder’s parameters and the measured intrinsic viscosity values for PMMA. The characteristics of adsorption-exclusion transition depends both on thermodynamic affinity of the solvent for the polymer and macromolecule-to-pore size ratio.

Proc. 6th Int. Symp. Instrum. Planar Chromatogr., (Interlaken 1991), Inst. Chromatogr., Bad Dürkheim, FRG, 321-332 (1991). TLC is used as pilot technique for HPLC of chrysene, dichlorophenoles, nitrophenol, bromonitrobenzenes and nitrotoluene. Mobile phases for both TLC and HPLC were hexane - benzene , hexane - ethylene chloride, hexane - ethyl acetate; for stationary phase silica gel was used. Solute retention (RM) values of TLC are mathematically compared with k’ values of HPLC.

J. Chromatogr. 639, 287-294 (1993). Investigation of some aspects of measuring true RM values [log (1/RF-1)], in order to improve the application of reverse-phase TLC for the chromatographic estimation of drug lipophilicity. Optimization of the experimental condition, estimation of thermodynamically true RM values, detection of the influence of pH on RM in the case of strong bases.

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. Planar Chromatogr. 28, 98-105 (2015). An interphase is a diffuse thick region separating two dissimilar phases in which one phase usually has a limited solubility in a region of the other. The interphase model redefines the stationary phase in biphasic separation systems to include components absorbed from the mobile phase by selective solvation. The interphase model in reversed-phase liquid chromatography shows that retention properties can be adequately described by the solvation parameter model and visualized as a function of the bulk mobile phase composition. For normal phase a competition model approach is required to separate between the contributions of solvent and solute interactions with the adsorbent surface, and the solvation parameter model to provide insight into the relative importance of various intermolecular interactions on retention and selectivity.

J. Planar Chromatogr. 3, 340-347 (1990). Determination of the dependence of reduced HETP (H) on reduced rate (u) in TLC at the end of chromatography as well as the contribution of mass transfer, rate profile, and molecular diffusion to this dependence. It was shown that in the range of u = uopt this dependence is weak. A new approach to the optimization of TLC is proposed. It is based on using plates of length L = Lopt and u = 0.4, which is slightly lower than u = uopt. The condition h = hopt is fulfilled over the entire length of the plate

J. Planar Chromatogr. 6, 378-381 (1993). Comparison of the retention of phenols and quinolines in TLC systems consisting of silica and a binary eluent (dioxane + heptane or ethyl acetate + heptane) using a horizontal DS chamber. The modification of retention (by saturation with eluent vapor) caused changes in the retention which can be attributed to eluent concentration gradients.

J. Liq. Chrom. & Rel. Technol. 27, 2127-2141 (2004). Study of the influence of mobile phase composition on the retention of selected test analytes in different normal-phase TLC systems and proposition of a new model for an accurate prediction of the analyte retention in the TLC with binary mobile phase. HPTLC of 15 analytes (phenol, 2-nitroaniline, 4-nitrophenol, quinoline, 4-aminophenol, hydroquinone, 1,2-phenylenediamine, 2-hydroxyquinoline, 4-nitroaniline, 2-iodoaniline, 8-methylquinoline, aniline,1-aminonaphthalene, 4-iodoaniline, 1,5-diaminonaphthalene) on cyano, diol and amino phase in horizontal chambers with binary mixtures of polar modifiers (2-propanol, ethyl acetate, ethyl methyl ketone, dioxane, or tetrahydrofuran with n-heptane). Detection under UV light at 254 nm.