Anal. Chem. 60, 564-508 (1988). TLC of phenanthrene, naphthalene, fluoranthene, triphenylene on silica with n-hexane. Visualization under UV after submerging in liquid nitrogen.

J. Planar Chromatogr. 3, 24-33 (1990). Method for the estimation of partition coefficients of both neutral and basic PAH. RP-TLC of 63 compounds on C-18 and KC 18-bonded silica with mixtures of methanol – deionized water or methanol – 0.063 M phosphate buffer (pH = 7). RM data may be predicted from structural descriptors, such as molecular connectivities and calculated partition coefficients.

Dünnschicht-Chromatographie InCom Sonderband 1996, 157-165. HPTLC of benzo[g,h,i]perylene, indeno[1,2,3]pyrene, benzo[a]pyrene, benzo[b]fluoroanthene, benzo[k]fluoroanthene and fluoroanthene on caffeine-impregnated silica prewashed with dichloromethane, precooled for 30 min at -20 °C, with dichloromethane at -20 °C. After removal of the eluent the plates are dipped for 2 s into a solution of paraffin (low viscosity)/n-hexane 1:2 and dried again (for stabilization and intensification of the inherent fluorescence of the PAH). Quantification by densitometry.

Sz. Nyiredy, A. Kakuk (eds.): Planar Chromatography 2000, Lillafüred, Hungary, 24-26 June 2000, Res. Inst. for Med. Plants, p. 11-18. HPTLC of 45 aromatics with polar groups on RP18 and RP18 W with various binary solvent systems. One mobile phase component was water and the organic one was 70% methanol, 55% acetonitrile or 55% tetrahydrofuran. The smallest selectivity changes are observed between methanol and acetonitrile systems. Distinctive selectivity changes are caused by modifiers. Ternary solvent systems seem to be advantageous for fine tuning of the separation.

Anal. Chem. 56, 1277-1281 (1984). TLC for chemical class fractionation on silica with 1) pentane for nonpolar compounds and 2) ether - pentane 1:5 for the polar. Detection by spraying with 0.2 % 2,7-dichloro-fluorescein solution and irradiation with UV light. Compound identification by GC/MS and IR.

Trends Anal. Chem. 87, 98-111 (2016). Chemical labeling of products (tagging) assists in the prevention and/or detection of counterfeiting. Mineral oils are protected against counterfeiting by spiking them with visible and/or invisible compounds. Due to the wide variety of available products and the different purposes for tagging there are many chemical substances used as taggants. To protect consumers and products it is important to establish the physico-chemical properties of these taggants. Review of techniques and methodologies for the analysis of liquid fuel taggants, including the application of TLC for the quantitative determination of SR24 taggant in heavy oil and for the detection of markers for petroliferous products, in particular diesel oil.

J. Chromatogr. 269, 102-107 (1983). TLC of polycyclic aromatic hydrocarbons on silica impregnated with different nucleic acid derivatives with chloroform - heptane 1:99. Detection by UV 254 nm.

J. Agric. Food Chem. 49, 3278-3283 (2001). Fractionation of alkenes by AgNO3-TLC; plates prepared by dipping for 1 min in a mixture of 10% aqueous AgNO3 solution and ethanol 1:1. The plate was then dried in an oven at 70°C for 20 min. TLC of sesquiterpenes (e.g. cyclosativene, longicyclene, a-copaene, b-cubebene, ?-elemene) on silica gel with n-hexane. Visualization under UV 254 nm after spraying with a 0.2% ethanolic solution of 2,7-dichlorofluorescein.