Chinese J. Chromatogr. (Sepu) 18 (3), 206-211 (2000). Determination of the TLC retention of ten ginsenosides on silica gel with chloroform - ethyl acetate - methanol - water 15:40:22:10. Calculation of seventeen structure parameters of the ginsenosides for QSRR study, including topologic indices and physicochemical properties. A novel parameter "E" was presented according to the differences of the parent substances the ginsenosides are composed of. Selection of Aw, 8B and E among the parameters by optimization, which were employed in the derived multi-parameter regression equation. Discussion of the relationships between the retention and the molecular structure of the compounds.

Proc. Intern. Symp. on Planar Separations Plan. Chrom. 357-362 (2003). Investigation of the retention behavior of thiazoles as function of organic modifier content of the eluents using two types of stationary phases. TLC of 12 3-benzyloxycarbonyl-5-substituted 2,4-dioxotetrahydro-1,3-thiazoles on silica gel, impregnated with paraffin oil, and rice starch with NH3 conc. - methanol, conc. NH3 conc. - dioxane, and NH3 conc. - acetone with different modifier content (from 0.01 to 0.34 ) for methanol, dioxane, and acetone. Visualization under UV 254 nm.

Chromatographia 59 (1-2), 121-128 (2004). Relationships between Rf values and mobile phase composition have been determined for urea herbicides and fungicides in normal-phase systems (NP) of the type silica-nonpolar or weakly polar diluent (heptane, toluene, diisopropyl ether) – polar modifier (ethyl acetate, tetrahydrofuran, dioxane, ethyl-methyl ketone and 2-propanol). These relationships constitute a retention database which has enabled to choose optimum systems for preliminary fractionation of a multicomponent mixture of pesticides by zonal micropreparative TLC. The mixture was applied from the edge of the layer in the “frontal + elution” mode which increased the separation efficiency because of displacement effects. The separated simpler fractions were applied to a silica plate and rechromatographed. The plate was videoscanned, furnishing a real picture of the plate showing preliminary separation of the simpler pesticide fractions. Complete separation of the fractions was carried out by two-dimensional thin-layer chromatography on plates with chemically bonded-cyanopropyl silica stationary phase using non-aqueous eluent in the first direction and aqueous reversed-phase eluent in the second direction.

J. Liq. Chromatogr. Relat. Technol. 35, 1444-1451 (2012). HPTLC of eight new p-toluenesulfonyl-hydrazinothiazole and hydrazine-bis-thiazole derivatives on silica gel RP-18 with mixtures of methanol/water in different methanol proportion between 50 to 70% with 5% increments as mobile phase. Quantitative determination by absorbance measurement at 254 nm. A chromatographic hydrophobicity index was determined and comparable results were obtained using HPLC.

5. Mittlg. Adsorptionsparameter potentieller Antimycotica des Pyrimidin-Typs und ihre Korrelation zur biologischen Wirkung. Parameters of adsorption chromatography, Part.5.: Adsorption parameters of potencial antimycotics of the pyrimidine type and their correlation with biological activity. Pharmazie 42, 513-516 (1987). TLC of 19 fungicide pyrimidine derivatives on aluminium oxide (without binder) with 48 solvent systems (benzene - methanol, benzene - ethanol and chloroform - ethanol). Detection with 0.1% KMnO4 solution acidified 10% sulfuric acid (9:1).

Proc. 6th Int. Symp. Instrum. Planar Chromatogr., (Interlaken 1991), Inst. Chromatogr., Bad Dürkheim, FRG, 257-264 (1991). Kinetic performance parameters for several commercial TLC and HPTLC layers are presented. Influences of binder layer thickness and preparation procedures of chemically bonded layers are discussed. A comparison of TLC-layers with slurry packed liquid chromatography columns of the same particle size is given.

J. Planar Chromatogr. 5, 359-363 (1992). TLC of compounds with different molecular structures on silica using binary eluents with a wide range of polarity. Measured retention constants were in good agreement with equations derived from theories of both displacement and liquid - liquid partition phenomena.

J. Planar Chromatogr. 8, 52-62 (1995). TLC of 14 selected isomeric phenol derivatives on silicone impregnated silica with Veronal acetate buffer (pH 7.4) - acetone 65:35 and 60:40. Detection by spraying with tetradiazotized benzidine. Correlation of RM values, partition coefficients, log P, toxicological properties, log 1/CT, and antibacterial activity, log 1/CA with numerical values of the topological indices.