Chinese J. Chromatogr. (Sepu) 11, 177-178 (1993). Description of a procedure for the preparation of a fluorescence methyl bonded silica plate by using acrylate solution as the binder. Evaluation of the water-resistant capacity, reproducibility of Rf value, homogeneity of the layer, separation efficiency and resolution.

J. Planar Chromatogr. 7, 444-449 (1994). Examination of the chromatographic behavior of 17 cations and 17 anions on sorbent layers prepared from binary mixtures of different ratios of alumina, silica, and cellulose developed with aqueous methanol containing tri-n-butyl phosphate and formic acid. Comparison of the results obtained on plain silica, alumina and cellulose with those on mixed sorbents.

J. Chromatogr. A 758, 125-134 (1997). Presentation of new variants of TLC plates with a sorbent layer closed by a film transparent to UV light. Investigation of characteristics of the plates. Discussion of the mobility of the solvent, and of the way to adjust the velocity of the mobile phases.

J. Planar Chromatogr. 12, 320-327 (1999). Examination of the structure and homogeneity of silica gel layers impregnated with copper(II) sulfate by atomic-force microscopy, energy-dispersive spectrometry, and densitometry. Silica gel modified with Cu(II), Ni(II), and Zn(II) salts was used for model analysis of anilines, quinolines, and phenol derivatives; the effect of the mobile phases used (dioxane, ethyl acetate, benzene, dichloromethane and chloroform) on the retention of the compounds was compared on unmodified silica gel and on the sorbent modified with metal salts.

J. Planar Chromatogr. 16, 32-35 (2003). TLC of six metal complexes containing thiobarbituric acid and thiopentol on modified and unmodified diatomeous earth (with organic binder (polyvinyl alcohol) and 3% luminophore (zinc germanate and magnesium activated with manganese(II)) with ethanol - nitric acid 45:2. Detection under UV 254 and 366 nm. The phase has been characterized by elemental analysis, measurement of the specific surface area, IR spectroscopy, thermal analysis, and chromatographic testing.

J. Planar Chromatogr. 11, 411-416 (1998). Report of an evaluation of one of the newest chromatographic methods, thin-layer electrochromatography on silica gel and aluminum oxide with a strong homogeneous electric field and the monocomponent organic mobile phases commonly used in adsorption chromatography. TLC of polycyclic aromatic hydrocarbons and quinoline derivatives on silica gel and aluminum. The influence of the electric field on the migration velocity of the mobile phase and the chromatographed substances on the cathode side was most evident for ethyl methyl ketone and ethyl acetate.

Isolation of the enantiomers. Chromatographia 68 (11-12), 1048-1051 (2008). TLC resolution of the enantiomers of the racemic drugs ketamine and lisinopril on silica gel with 1) ethyl acetate - methanol - water 3:1:1 and enantiomerically pure tartaric acid and (-)-mandelic acid as chiral impregnating reagents, for ketamine; and 2) acetonitrile - methanol - water - dichloromethane 14:2:2:1 with (+)-tartaric acid as the impregnating agent for lisinopril and using (+)-tartaric acid as mobile phase additive; and 3) acetonitrile - methanol - (+)-tartaric acid (0.5 % in water, pH 5) - acetic acid 70:10:11:7 which enabled successful resolution of the enantiomers of lisinopril. Investigation of the effects of temperature, pH, and the amount of chiral selector. Detection with iodine vapour. Isolation and identification of the separated enantiomers. The LOD was 0.25 and 0.27 µg for each enantiomer of ketamine with (+)-tartaric acid and (-)-mandelic acid, respectively, whereas 0.14 and 0.16 µg for each enantiomer of lisinopril with (+)-tartaric acid (both conditions) and (-)-mandelic acid, respectively.

J. of Chromatogr. A 1218 (33), 5693-5704 (2011) A micro-TLC platform for the fast analysis of low-molecular mass compounds from spirulina samples was developed. The target compounds were extracted with methanol, acetone or tetrahydrofuran. HPTLC on RP-18W with acetone - n-hexane 3:7 in an unsaturated chamber using a temperature controlled micro-planar chromatographic device based on a horizontal chamber. Detection under visible light before and after exposure to iodine vapor. Pictures of the chromatograms were acquired with an office scanner and digitalized. The quantitative data was analyzed using cluster analysis and principal components analysis. With this method it was possible to distinguish genuine spirulina and non-spirulina samples as well as fresh and expired commercial products.