J. Planar Chromatogr. 9, 25-30 (1996). Investigation of the mechanism of solute retention in adsorption TLC on alumina with three different mobile phases, isopropanol - hexane, n-butanol - hexane, and t-butanol - hexane as well as interpretation in terms of the types of active site available on the alumina surface and the possible intermolecular interactions between the solute molecules and the sites. Also comparison of the results obtained on alumina with analogous results previously reported for silica as stationary phase.

J. Planar Chromatogr. 11, 433-437 (1998). Examination of the behavior of some dihydroxybenzanilides, organic compounds with fungicidal properties, using RP-planar chromatography. The effect of organic modifier (methanol or acetone) concentration and stationary phase (RP-NH2 or RP-CN) properties on solute retention was investigated and the dependence of peak shape and symmetry on the mobile and stationary phase was analyzed. RP-CN phases are useful for the chromatographic separation of benzanilides chosen. Chromatography was performed at 20°C in a horizontal sandwich chamber saturated for 20 min. Densitometry at 325 nm.

J. Planar Chromatogr. 15, 214-219 (2002). Theoretical consideration of experimental results for the wicking process in a solid thin porous layer by liquids of different polarity with defined surface free energy components and viscosity. The method was used for the determination of the solid surface free energy of the adsorbents used in TLC. Experiments were performed on commercial glass plates precoated with silica gel, CN-silica, DIOL-silica, NH2-silica, and silanized silica with n-alkanes, diiodomethane, water, and formamide as mobile phases. Surface free energy components determined for the adsorbents investigated were used for the characterization and comparison of their surface properties.

J. Planar Chromatogr. 19, 171-174 (2006). Correction of RF values to improve the reproducibility, repeatability, precision, and reliability of retention factors in TLC. HPTLC of phenacetin, acetanilide, meso-tetraphenylporphyrin, fullerene C60, anthracene, solvent green 3, Sudan I, and cytochrome C on silica gel (after heating at 120 °C for 40 min) in an S-type unsaturated and in saturated and unsaturated N-type chamber using toluene, diethyl ether, or tetrahydrofuran - cyclohexane. Detection of colorless spots under UV light at 254 nm. To improve reproducibility retention factors are calculated based on an unretained compound analog to a void volume marker in column chromatography.

J. Planar Chromatogr. 3, 144-148 (1990). Study of RM versus solvent composition relationships with 16 binary eluents composed of four diluents (heptane, chloroform, dichloromethane, trichloroethylene) and four modifiers (ethyl acetate, MEK, ether, diisopropyl ether) for 57 aromatic solutes (azaarenes, anilines, phenols, phenolic acids and their derivatives). Linear RM versus logCmod plots were obtained in almost all of the above cases, permitting storage of the data in computer memory.

J. Planar Chromatogr. 4, 442-445 (1991). Presentation of a method for the computer-assisted selection of multicomponent solvent systems for the separation of multicomponent solvent systems for the separation of a synthetic product of unknown composition by HPTLC. The method is based on recognition of the order of the spots by comparison of spot area percent, followed by design of the solvent mixture by a statistical optimization method. Excellent agreement has been obtained between predicted data and experimental results.

J. Planar Chromatogr. 8, 205-215 (1995). Investigation of adsorption liquid chromatography with alcohol - hydrocarbon binary eluents. A selection of the interpretative methods have been considered, and their practical usefulness compared when implemented with the commonly accepted Soczewinski equation and with the alternative nonlinear relationship. On the basis of a comparison of experimental and the computed results, conclusions are drawn about the efficiency of the individual interpretative methods and of the two „theoretical“ approaches.

J. Planar Chromatogr. 12, 13-25 (1999). Use of the solvation parameter model to derive system maps for methanol, 2-propanol, 2,2,2-trifluoroethanol, acetonitrile, N,N-dimethylformamide, and acetone binary mobile phase components in water on RP-18. Interpretation of the system constants provides an explanation of solvent selectivity in terms of fundamental intermolecular interactions and changes in the phase ratio. Excellent agreement between predicted and experimental Rf values which highlights the strong potential for this new method of computer-aided method development in reversed phase chromatography.