J. Chromatogr. Sci. 54 (1), 64-69 (2016). Micro-TLC of 11 species of the Mentha genus and two finished pharmaceutical products in two-dimensional mode in normal (NP) and reversed-phase (RP) systems on cyano phase with non-aqueous eluents for NP-TLC and with mixtures of acetonitrile with water or methanol with water for RP-TLC. Optimization of one-dimensional systems was performed by determining RM values vs. composition of mobile phase dependencies for standards occurring in various Mentha sp. On the basis of these dependencies the most selective chromatographic systems for each run were chosen. Then most selective eluents were applied to optimize two-dimensional systems by creating Rf in NP systems vs. Rf in RP systems correlations. The best two-dimensional systems were chosen on the basis of R(2) values for Rf vs. Rf correlations (the lowest values of R(2) coefficients). Two-dimensional micro-TLC was used to separate phenolic compounds of the examined plant materials.

Chromatography the State of the Art, Vol. II, Akademiai Kiado, Budapest 1985, 501-515. Description of OPTLC (OPLC) and discussion of its merits.

Chrosatogr. (Se PU) 2, 225-227 (1985). (Chinese) (A novel method of continuous development thin-layer chromatography.) Description of a technique for continuous development in TLC. Filter paper clamped on the top of the layer is used as solvent evaporator. Some application examples are given.

J. Chromatogr. 369, 11-17 (1986). Description of a horizontal developing device of sandwich configuration. A stepwise gradient is first designed graphically, the respective eluents having increasing concentrations of polar modifier are manually introduced with a pipette. The technique is suitable to separate complex samples.

Acta Pharm. Sinica 23, 521-526 (1988) (Yaoxue Xuebao). Presentation of a method predicting the optimum mobile phase composition based on the relationship between the solute retention, spot width and the composition of multi component mobile phase in TLC. Demonstration of an example of the optimal process for the separation of the main components in Chinese patent medicine.

Acta Pharm. Sinica (Yaoxue Xuebao) 24, 841-846 (1989). Analysis of 81 commonly used solvents by Fuzzy group method using a computer. Optimization of 20 solvents selected for TLC by means of a uniform design test with the separation of ginseng saponins as examples.

Proc. 6th Int. Symp. Instrum. Planar Chromatogr., (Interlaken 1991), Inst. Chromatogr., Bad Dürkheim, FRG, 301-309 (1991).HPTLC on silica with chloroform - methanol - 0.025% aqueous CaCl2 60:40:9. Covered with a polyvinylidendifluoride (PVDF) membrane negatively loaded gangliosides were electrotransfered to the PVDF-membrane. On the membrane visualization (with resorcinol reagent) or immunoblotting.

J. Chromatogr. 553, 459-466 (1991). Study of OPLC retention behavior of minoxidil and its intermediates using silica gel layers impregnated with tricaprylmethylammonium chloride (TCMA). Investigation of the influence of the concentration of TCMA adsorbed on the silica gel, and of the pH and the ionic strength of the eluents on the retention of the solutes, etc.