J. Planar Chromatogr. 10, 18-25 (1997). Study of the distribution of different ion-pairing reagents, e.g. tetramethylammonium (TMA), tetrabutylammonium (TBA), cetyltrimethylammonium (CTMA), and trioctylmethylammonium (TOMA) by measurement of the absolute concentrations of the compounds in the stationary phase after chromatography (OPLC) on silica impregnated by immersion into a methanolic solution (0.05 M) of the reagents with methanol - water mixtures in different ratios. The behavior of acidic, neutral, and basic compounds were studied simultaneously. The chromatographic results showed good correlation with the concentration of the reagents measured on the layer.

J. Planar Chromatogr. 13, 254-256 (2000). Study of the physicochemical fundamentals of planar analytical test methods with analytical reagents forming poorly soluble products on reaction with the target compound. In the test methods the analytical reagent was applied to a porous planar system (paper, or an adsorbent layer spread on a support). It was shown that regularities in the planar test methods are similar to those observed in planar chromatography.

J. Liq. Chrom. Rel. Technol. 27, 1993-2002 (2004). Commercially precoated TLC and HPTLC silica gel plates, with enhanced brightness UV indicator were compared with comparable plates formulated with standard indicators. Results showed that the increased UV indicator plates had visually brighter backgrounds, however, the limits of detection did not improve. HPTLC and TLC on silica gel of caffeine and acetaminophen with ethyl acetate - glacial acetic acid 19:1, and salicylamide with methylene chloride - acetone 4:1 in a twin-trough chamber containing a saturation pad. Quantitative determination at 254 nm.

J. Liq. Chromatogr. Relat. Technol. 33, 894-902 (2010). Five amphoteric piperazynyl fluoroquinolones and flumequine were analyzed in an RP system on C8 plates with acetonitrile/aqueous acidic mobile phases containing various concentrations of potassium perchlorate. Perchlorate as a so-called chaotropic ion caused the increase in the retention of basic fluoroquinolones. TLC of sarafloxacin, difloxacin, norfloxacin, enrofloxacin, ciprofloxacin, and flumequine on RP-8 with acetonitrile - water containing constant concentration of citric acid but various concentrations of potassium perchorate. After air-drying, fluoroquinolone zones were detected at 366 nm and 254 nm and flumequine only at 254 nm. The retention increased with the increasing concentrations of perchlorate ion in the mobile phase and achieved a plateau for the mobile phases containing 10-20 mM of chaotropic perchlorate.

J. Liquid Chrom. 10, 1261-1276 (1987). Microcomputer calculation of Rf values for any gradient program after introduction of Rf values of sample components obtained for several isocratic runs. Good agreement of calculated and experimental Rf values.

J. Liquid Chromatogr. 12, 957-978 (1989). Characterization of hydrophobic properties of 17 aniline and phenol derivatives by reverse-phase TLC and HPTLC. Retention data, using paraffin coated silica, aluminium oxide, cellulose, diatomaceous earth and their mixtures. Chromatography with water, water – methanol 7:3 and 1 M NaCl as mobile phases. Analysis of the retention data by spectral mapping technique. Evaluation of the role of the composition of support in the hydrophobicity determination of aniline and phenol derivatives.

J. Planar Chromatogr. 5, 267-270 (1992). Determination of the lipophilicity of 17 non-ionic tensides (nonphenyl and tributylphenyl ethylene oxide oligomers) by RPTLC with methanol , ethanol , and 1-propanol as organic modifiers of the aqueous mobile phase. Rm values decreased linearly with increasing concentrations of organic modifier. TLC on silica impregnated by overnight predevelopment with hexane - paraffin oil 95:5, and aqueous methanol, ethanol and 1-propanol (various alcohol concentrations). Detection with modified Burger reagent (G.F. Longman, The Analysis of Detergents and Detergent Products, Wiley and Sons, London, (1977), 517).

J. Planar Chromatogr. 7, 217-220 (1994). Adaption of the new retention model primarily established for reverse phase liquid chromatographic systems employing tetrahydrofuran - water and acetone - water mobile phases to the description of solute retention in analogous systems utilizing phosphate buffer instead of water. The basic physical relationships of this approach have been very carefully tested by experiment. Excellent agreement found between theory and practice of the phenomena considered.