Chromatographia 23, 179-183 (1987). TLC on silica with n-hexane - benzene 9:1 and chloroform - ether 9:1. Detection under UV 254 nm and 366 nm. Use of TLC data for establishing the sequence, composition and volume of eluents in order to collect the main components of coal liquids in six fractions of increasing polarity.

Fresenius Z. Anal. Chem. 313, 414-416 (1982). TLC and HPTLC of benzo(a)pyrene, benzo(e)pyrene and benzo(g,h,i)perylene. TLC on acetyl cellulose with ethanol - dichloromethane-water 20:10:1 and HPTLC on RP-18 with acetonitrile-dichloromethane-water 9:1:1. Fluorometry at 366 nm (BaP and Bghip) and 313 nm (BeP).

J. Chromatogr. 288, 187-194 (1984). TLC of organic extracts of diesel exhaust particulates The organic extracts are separated into aliphatics, aromatics and polars on fused silica rod with hexane, and the polars can be separated further by using toluene. Non-volatile organics with boiling points higher than ca 300°C can be analyzed with a detection limit of ca 0.03 mg and a relative standard deviation of ca. 10 % Detection by FID.

Synthesis of oxidative degradation products from the methylated component. Phenols of anacardium occidentale and other phenolic lipids: confirmation of the structure of the parent phenols and of a related material. Lipids 17, 561-569 (1982). Isolation of the degradation products of anacardic acid, cardol, 2-methyl-cardol and cardanol by TLC on silica with a) chloroform, b) chloroform ethyl acetate 95:5, c) chloroform - petrol ether 6:4. Detection and visualization acc. to J. Caplin and J. Tyman, J. Chem. Res. 5, 34-35, 11, 0321- 0351 (1982).

CBS 98, 9-11 (2007). Quantitative HPTLC of polycyclic aromatic hydrocarbons (PAH) from water samples, on caffeine-impregnated silica gel, with isopropyl acetate in a precooled (-20 °C, 30 min) twin-trough chamber without chamber saturation over 70 mm at -20°C. After application the dry plate was first equilibrated in the solvent-free trough for 10 min at -20 °C. Qualitative HPTLC at room temperature in the horizontal developing chamber with isopropyl acetate - n-hexane 3:1 over 50 mm. Detection by dipping in paraffin - toluene 1:1 (for fluorescence enhancement). Quantitative determination by fluorescence measurement at UV 366/>400 nm. Qualitative evaluation under UV 366 nm. The method is based on the German standard DIN 38407-7 for quantitative determination of 6 PAH but uses isopropyl acetate as a chlorine-free solvent instead of dichloromethane.

Universal interaction indices for GLC, HPLC and TLC. Chromatographia 20, 283-288 (1965). Proposal of universal interaction indices used in TLC, GLC and HPLC, which can be easily calculated from commonly used retention parameters, such as Rf values, relative retention times etc. Presentation of the calculation examples for polycyclic aromatic hydrocarbons and n-alkanes. Demonstration of the application of the electric interaction indices for studying the retention mechanism.

Chromatographia 25, 643-646 (1988). Investigation of the retention behavior of a group of polycyclic aromatic hydrocarbons having nearly equal ionization potentials but different molecular polarizability values, using reversed-phase TLC on octadecyl-bonded silica with normal alcohols. Discussion of the relationship between retention parameters and molecular polarizabilities of the solutes and solvents.

J. Planar Chromatogr. 4, 497-498 (1991). TLC of 12 PAH’s (anthracene, phenanthracene, pyrene, benz(a)anthracene, benzo(a)pyrene, perylene, chrysene, dibenz(a,h)anthracene, benzo(e)pyrene, triphenylene, coronene) on cellulose acetate with ethanol - toluene - water 17:4:4.