J. Planar Chromatogr. 14, 355-359 (2001). Increase of velocity and migration distance of the mobile-phase front in porous media by application of an external electric field. TLC on silica gel with benzene - methanol 3:2.

Proc. Intern. Symp. on Planar Separations Plan. Chrom. 129-138 (2003). Conventional HPTLC of aromatic hydrocarbons with polar groups (2-naphthol, 1-nitro-naphthalene, 1,7-dihydroxynaphthalene, 2-ethylanthraquinone, 4-nitroaniline, anthraquinone) and dyes (1-aminoanthraquinone, fat brown, 4-diethylaminoazobenzene, 4-hydroxybenzene-azonaphthol-2, 4-(4-(N,N-ethylethanol)benzeneazo)-N-methylphthalimide, 4-nitroaniline) on RP-18 with e.g. 90% methanol in pH 10 buffer (diluted 1:7 with water) or acetonitrile - buffer in a presaturated horizontal chamber. Planar electrochromatography was performed under similar conditions with the exception of e.g. using plates with 0.5 cm margins of paraffin oil along their longer parallel edges and pre-wetting after spotting of the sample with mobile phase from both sides leaving within approximately 1 mm dry zone of start spot position. Then the chromatographic plate was pressed face-to-face with a counter-plate using clips. 200-250 V /cm field was applied to the plate. Higher efficiency and shorter development time of electrochromatography systems relative to conventional TLC separations were demonstrated.

J. Planar Chromatogr. 17, 290-296 (2004). Description of a new AMD instrument. Its main advantages are very low cost both of construction and in use. In comparison with ascending development in conventional instruments, a laboratory-made horizontal sandwich chamber is used for development. With the help of a series of special accessories no obvious mobile phase remains in the distributor after each step thus saving a large amount of solvent. All the components of the instrument are easy to obtain, so the average worker in the laboratory could construct all the instrument except the control unit. An application of the instrument is described; the results obtained were satisfactory. Compared with the commercial instrument the main differences are 1) a horizontal sandwich chamber with funnel distributor is used as development chamber, 2) the most expensive component, a motor-driven valve, is omitted, 3) a micro air pump (normally used to supply oxygen for goldfish) is used to deliver mobile phase to the chamber. AMD separation of 13 dyes with first acetone - ethyl acetate 1:1 to compress the spots to slim bands, then seven steps with ethyl acetate - chloroform 4:21 to1:9 were completed; then seven steps with chloroform - cyclohexane 17:3 to 67:33. After these fifteen steps of AMD the mixture was separated into eighteen visible spots.

J. Planar Chromatogr. 21, 221-223 (2008). Construction of a simple and inexpensive compressed air-driven spraying device which can handle small and large volumes of TLC derivatization reagents. The device is made from widely available HPLC accessories, including stainless-steel fittings and tubing, and can be used with corrosive liquids with a wide range of viscosity. TLC of fluorescein, methyl red, bromocresol green, phenolphthalein, and crystal violet on RP-18 with methanol - water 7:3. Evaluation under white light.

J. Liq. Chromatogr. Relat. Technol. 38, 1104-1108 (2015). HPTLC of trans-resveratrol on silica gel with ethyl acetate - cyclohexane - n-butanol 9:9:2. Detection through chemiluminescence by dipping into a TCPO solution (250 mg bis(2,4,6-trichlorophenyl)oxalate in 36 mL n-butyl acetate, followed by adding 0.4 mL hydrogen peroxide that was vigorously shaken with the solution for 20 min). The HPTLC plate was covered by a glass plate and measured for 2 min using a very light-sensitive CCD camera. The hRF value for trans-resveratrol was 78. Linearity was in the range of 20-500 ng/zone. LOD and LOQ were 13.7 and 20.3 ng/zone, respectively.

J. Chromatogr. 350, 468-470 (1985). TLC of various steroids on silica with chloroform - methanol 10:1. Detection by spraying with 1 % rubeanic acid in concentrated sulfuric acid. Evaluation by densitometry. Detection limits 0.1-0.3 mg for most steroids examined.

J. Planar Chromatogr. 2, 65-70 (1989). For qualitative analysis monodansyl cadaverine (MDC) was employed without further purification. Column-chromatographic purification is recommended for the quantification of short chain carboxylic acids. For in situ derivatization the carboxylic acid sample solutions were applied to the HPTLC plates as bands with a maximum length of 10 mm. These were then „overlayed“ with MDC solution containing N,N’-dicyclohexylcarbodiimide to activate the acids. Short-chain carboxylic acids were separated on normal silicagel phases with toluene - ethyl acetate - ammonia mixtures as mobile phase. Stepwise and gradient developments allow the baseline separation. Long-chain carboxylic acids are better separated on RP-18 phases with acetonitrile-tetrahydrofuran mixtures and methanol as mobile phase.

J. Planar Chromatogr. 4, 325-326 (1991). TLC of carboxylic acids (no details) on silica impregnated with different concentrations of paraffin oil in petrol ether with acetic acid - acetonitrile 50:1. Detection after drying at 100-120 °C for 30 min. by spraying with a 0.1% dichloromethane or benzene solution of the 2-methyl-, 2-methoxy-, 2-chloro-, 2-bromo-, or 2-fluoro-derivatives of 9-isothiocyanatoacridine (most efficient: 2- methoxy- and 2-chloro-compounds.