Symp. on Advances in Liq. Chromatogr. Szeged, Hungary 1982. Considerable interest in the role of the specific surface area of the adsorbent in thin-layer chromatography is due to the growing importance of this method as a pilot technique for determing the optimum conditions of mixture separation on both analytical and preparative scales.

J. Chromatogr. 287, 385-390 (1984). Study to compare the reversed-phase thin-layer chromatography behaviour of some barbituric acid derivatives on various chemically bonded reversed-phases with different eluents.

J. Planar Chromatogr. 2, 180-189 (1989). Properties of the sample and matrix effects, that affect quantitative TLC using scanning densitometry are discussed. The sorbent matrix influences the shape of calibration curves, and impurity gradients, resulting from contamination of the layer or application of derivatizing reagents are common sources of baseline instability. Chemical reactions catalyzed by the sorbent layer, which may also involve oxygen or light, are a source of sample instability. Fluorescence quenching and fluorescence enhancement effects can influence the reliability of quantification in the fluorescence mode. Some practical examples of the effects are discussed. Comparison of HPLC and TLC.

CLB Chemie in Labor und Biotechnik 2, 55-60 (1999). A comparison between a TLC Scanner and a video-system as tools in quantitative evaluations of HPTLC chromatograms. Discussion of the advantages and disadvantages of both systems.

Abstract No. 9923, IHCB (2009). HPTLC of several herbal formulations (tablets extracted with methanol) on silica gel with toluene - ethyl acetate 19:1. The fingerprint method was suitable for correct identification and for routine quality control of the herbal extracts.

Detection by spraying with 0.01 % dithizone in trichloromethane.

J. Chromatogr. 367, 323-334 (1986). TLC of some rifamycins and steroids on diphenyl-bonded silica with various solvents, including non-aqueous and aqueous binary mixtures. Proposal of a dual retention mechanism. Interactions of the residual silanol groups seem to prevail when using lipophilic solvents as the mobile phase, whereas interactions with bonded aryl. groups dominate when high polarity alcoholic or aqueous mixtures are being used. Diphenyl silica precoated plates, rifamycins, steroids, mobile phase composition

J. Chromatogr. 454, 352-356 (1988). TLC of azo dyes on acetylated paper with C1-C4 alcohols in mixtures with water or NH3. Investigation of the dual retention mechanism of commercial acetylcellulose arising from its incomplete acetylation and depending on the hydrophilicity or lipophilicity of the analytes, as well as on the organic modifier in the mobile phase.