Anal. Biochem. 269, 410-417 (1999). Quantitative analysis of glutathione (GSH) or of glutathione S-Transferase (GST) activity using a new fluorescent molecule, 5-(pentaflourobenzoylamino)fluorescein (PFB-F). TLC of the formed glutathione adduct, GS-TFB-F, and of excess PFB-F on silica gel 60F254 with 1-butanol - methanol - water 3:1:1. The GS-TFB-F adduct spots were quantified with a fluorescence plate scanner using the blue fluorescence/chemifluorescence (480 nm) mode. Detection limits for GSH and for GST activity were 10 pmol/(l and 1 ng/(l, respectively.

J. Planar Chromatogr. 18, 141-146 (2005). TLC of fatty acids (ethanoic, propanoic, butanoic, pentanoic, hexanoic, heptanoic, and octanoic acid) on silica gel with hexane - acetone 4:1 or acetone - water - chloroform - ethanol - aqueous ammonia 30:1:3:5:11 with chamber saturation for 30 min. Only bromocresol green, bromophenol blue, potassium permanganate, and methyl red can be used for the detection. Among the new visualizing agents dipping of the plates in an aqueous solution of alkaline blue enables the detection of the free fatty acids from propanoic to octanoic. Dipping generated better contrast regarding the spots than spraying.

Phytochem. Anal. 24, 303-308 (2013). HPTLC of chicoric acid (1), chlorogenic acid (2) and echinacoside (3) in commercial Echinacea products on silica gel with ethyl acetate - formic acid - acetic acid - water 100:11:11:17. Qualitative identification under UV 366 nm. Images were quantified and transformed into chromatograms, as signal intensities (peaks) versus hRf (retention factor) for a artificial neural network (ANN) correlation. LOD were 19, 46 and 29 ng/band, whereas LOQ were 63, 154 and 98 ng/band for (1), (2) and (3), respectively.

R.E. Kaiser (Ed) "Proc. of the 3rd Int. Symp. on Instr. HPTLC, Wuerzburg" IfC, Bad Duerkheim 1985, 373-380.Description of the method,, which can be used for detection, identification and quantification in both absorbance and fluorescence. Application example from drug analysis (anthraquinone type, laxative).

Anal. Sci. 3, 11-15 (1987). Description of a photoacoustic densitometry technique by laser beam scanning on a photoacoustic cell without chopping or modulation. Conversion and processing of the photoacoustic signals by microcomputer. The reproducibility of measurement for 0.03 to 0.25 µg Malachite Green was 1.7-4.5% RSD.

Realised in the systems containing binary and ternary mobile phases. Annales Universitatis Mariae Curie- Skodowska XLI 11, 120-127 (1986). Description of a graphical method for the evaluation and comparison of the resolution obtained with binary and ternary solvent mixtures. It is based on position, shape and size of two neighbouring spots and serves for the optimization of the solvent ratio. The method is demonstrated by TLC of aromatic hydrocarbons on silica with mixtures of carbon tetrachloride, benzene, chloroform, dioxane and acetone.

Chem. Anal. (N.Y.) 108, 185-196 (1990). Studies of the measurement of two-dimensional gel electrophoretic and HPTLC patterns. Presentation of two qualitative mapping techniques. Examination of quantitative analysis of partial spots using calibration curves.

Anal. Chem. 64, 3176-3179 (1992). Description of a square-wave anodic stripping voltametric method for ppm determination of heavy metals. Separation by TLC on carboxymethyl cellulose using a cellulose dialysis membrane - covered mercury film electrode placed directly on the TLC plate surface in a thin-film of supporting electrolyte solution. Presentation of the results for a mixture of Pb(II), Cd(II), and Zn(II). Calibration curves for Pb(II).