J. Chromatogr. A 902, 335-347 (1998). Proposal of a new approach to method development in reversed-phase TLC based on the use of calculation employing the solvation parameter model. Presentation of the system constants for aqueous binary mobile phase mixtures containing organic solvents on cyanopropylsiloxane-bonded silica. Demonstration of good agreement between experimental and predicted Rf values for steroids, phenols, etc.

J. Planar Chromatogr. 8, 349 - 356 (1995). TLC of estradiol benzoate on silica (prewashed with chloroform - methanol 1:1 with hexane - acetone - 2-propanol 45:1:1. When testing the peak purity by 2D-TLC, the mobile phase used in the second direction was chloroform - acetone 19:1. Evaluation by spectrodensitometry at 229 nm. - Determination of specificity, analyte stability, linear range, accuracy, precision (repeatability, intermediate precision), detection, and quantification limit, as well as the robustness of the method.

J. Planar Chromatogr. 17, 102-108 (2004). For sample preparation a methanolic salicylic acid solution was sprayed onto a 40x40 cm glass plate. Samples from different positions of the test plate were extracted with methanol and analyzed by HPTLC and HPLC. HPTLC of salicylic acid on silica gel with cyclohexane - isopropanol - chloroform - acetic acid 12:1:1:2. Quantitation by densitometry. Measurement uncertainty in HPTLC and HPLC is relatively small and has no effect on recovery. To come close to the true value the analytical procedure must be managed by well-considered selection of number and positions of sampling locations. TLC is an excellent analytical technique which gives reliable results.

J. Chromatogr. 246, 133-135 (1982). HPTLC is used in order to select non-aqueous solvent systems for droplet counter-current chromatography (DCCC). Triterpenes and steroids are separated on RP-8 nanoplates with the lower layer of methanol -1, 2-dichloroethane - n-heptane 37.6:4.8:57.6, methanol - acetone - n-heptane 40:10:50 or acetonitrile-dichloromethane - n-heptane 35:15:50.Detection with Godin reagent. The DCCC-fractions are monitored by TLC on silica with diisopropyl ether - acetone 70:30 or toluene-ethyl acetate 60:10.

J.Liquid Chromatogr. 6, 1-22 (1983). RPTLC of poly(styrene), poly(a-methylstyrene), poly(isoprene), poly(butadiene) etc.on silica with dichloromethane - methanol, dioxan-ethylene glycol and THF-ethylene glycol. Detection by fluorescence, with iodine vapour or 1 % Jod in methanol.

J. Chromatogr. Sci. 23, 101-105 (1985). Comparison of 4 bonded phases for TLC, KC2, KC8, KC18, and K diphenyl, differing in bonded chain length, degree of surface silanol coverage, and chemical character of the bonded moiety. Some similarities and differences among the layers based on their physical and chemical characteristics are described.

Anal. Chem., 63, 1318-1322 (1991). Investigation of the mobile phase - stationary phase interface of TLC plates at different polarities, studied with dyes, Relchardt’s betaine, N,N-diethyl-4-nitroaniline and N-methyl-2-nitroaniline. Measurement of the shifts in the wavelength maxima of dyes by diffuse reflectance spectroscopy. Discussion of the interaction between the dyes and the silanol groups on the surface.

J. Planar Chromatogr. 12, 58-62 (1999). The analytical performance and costs have been compared for two chromatographic procedures used for assay and purity testing of defined phospholipids: HPTLC with postchromatographic derivatization and HPLC with light scattering detection (LSD). For this special application HPTLC is as accurate and precise as HPLC, or even better. Benchmarking, including all possible cost sources, shows that cost reduction by use of HPTLC is significant (cost reduction 1:2.5). - HPTLC of phospholipids on silica gel with chloroform - methanol - acetic acid - water 65:20:8:5; chamber saturation. Detection by dipping into 10% copper(II) sulfate - phosphoric acid reagent, 5 min drying at 110°C and 30 min at 170°C. Evaluation by densitometry in absorbance mode at 365 nm.