Rapid Commun. Mass Sp. 19, 3659-3655 (2005). HPTLC of a preparation of neutral Stx1-binding glycosphingolipids from human erythrocytes, comprising 21.4 % and 59.1 % of the high-and low-affinity Stx1-binding ligands Gb3Cer/CD77 and Gb4Cer respectively and their antibody positive bands on silica gel with chloroform – methanol – water 15:30:4. Crude extracts were used without any further purification for an analysis by nanoelectrospray ionization quadrupole time-of-flight mass spectrometry in the negative mode. Only analytical quantities in the microgram scale of a single glycosphingolipid species are required for the structural MS characterization.

Analyst 110, 1059-1065 (1985). Development of a computer-based retrival system for the identification of drugs and poisons in forensic toxicology using TLC, GC and UV spectroscopic data. Use of the concept of discrepancy index to match experimental data for an unknown with the information in the data file.

J. Chromatogr. 703, 613-665 (1995). A review with 192 references on the combination of TLC with a variety of spectroscopic techniques, illustrated with reference to a wide range of compound type including drugs, natural products, industrial chemicals, pesticides and dyes. Discussion of the applications TLC-FTIR, TLC-near IR spectroscopy and FTIR photoacoustic spectroscopy and TLC-Raman spectroscopy. Description of the use of conventional fluorescence spectroscopy and fluorescence line narrowing spectroscopy as a aid to compound identification.

J. AOAC Int. 82, 587-598 (1999). Description of a new automated overpressured-layer chromatographic (OPLC) system which is suitable for analytical and semipreparative separations. The automatic microprocessor-controlled system ensures rapid and reproducible off-line isocratic and stepwise gradient separations. With optimum linear velocity theoretical plate heights of 10 - 30 µm resp. 6 - 15 µm can be reached (on irregular silica gel with an average particle size of 5µm resp 3 µm spherical silica gel). Rapid analytical separations of resveratrol (1555 s) and xanthine by one- (498 s) and two-directional (274 s) off-line developments were accomplished.

R.E. Kaiser (Ed) Proc. of the 3rd Int. Symp. on Instr. HPTLC, IfC, Bad Duerkheim 1985, 475-488. Emphasis on influence of the noise caused by the particles and mechanical defects (structure) of the layer on quantitative TLC analysis. Improvement of accuracy and repeatability by total area quantification prior and after the chromatographic step of TLC cross correlation of quantitative and qualitative data.

J. Liquid Chromatogr. 18, 1405-1427 (1995). Presentation of a method for the computer assisted selection of the mode of TLC development for the separation of ten phenolic components, based on simulation of isocratic and gradient development. Investigation of the different combinations of isocratic and gradient development in one and two dimensions. Evaluation of the quality of the chromatograms by application of criteria such as the distance function and multipeak criterion.

J. Planar Chromatogr. 29, 361-365 (2016). Analysis of phenols in bio-oil from agricultural wastes obtained during fractionation. Column chromatography (CC) on silica gel in a glass column (i.d. 1 cm, 50 cm length) filled with n-hexane. The concentrated organic phase was mixed with silica gel 1:1, loaded onto the column and successively eluted with dichloromethane – acetone 20:1, ethyl acetate, and methanol. 24 eluate fractions were obtained during the fractionation using CC, 12 with dichloromethane – acetone mixture, 5 with ethyl acetate, and 7 with methanol. Phenolic compounds were present only in the dichloromethane – acetone mixture fraction which was therefore selected as the proper eluent to obtain all the phenolic fractions dissolved. To monitor the fractionation, TLC of the eluates on silica gel in saturated chambers (mobile phase not specified) to a distance of 4 cm. Qualitative identification under UV 254 nm and by exposure to iodine vapor. The hRf values of the standard solutions of phenol, cresol and guaiacolin dichlorlomethane were 66, 68 and 78, respectively. Eluate fractions were further analyzed by GC–FID and GC–MS.

J. Planar Chromatogr. 1, 220-226 (1988). Description of the construction and the characteristics of an interface for coupling CLC and TLC. Investigation of proper eluent for deposition. Discussion of the shape of the deposited spots and chromatographic features and the repeatability of the deposition process.