CBS 81, 6-7 (1998). HPTLC-AMD on silica gel with a gradient based on methanol – dichloromethane – n-hexane. Quantification by densitometry with absorbance measurement at 220 nm and fluorescence measurement at 366/>400 nm.

CBS 108, 12-15 (2012). HPTLC of anthracene (ANT), benzo[b]fluoranthene (BBF), benzo[k]fluoranthene (BKF), pyrene (PYR), acenaphthene (ACE), benzo[a]anthracene (BAA), benzo[a]pyrene (BAP), benzo[ghi]perylene (BPE), chrysene (CHR), dibenzo[a,h]anthracene (DBA), indeno[1,2,3-c,d]pyrene (IND), fuorene(FLU), fuoranthene (FLA), and phenanthrene (PHE) in toys on RP-18 phase with acetonitrile - water 9:1 by three-fold development over 45, 55 and 65 mm using automated multiple development (AMD) under nitrogen. Detection at 254 and 366 nm. Quantitative fluorescence measurement at different excitation wavelengths with cut-off filters: 220 nm/>320 nm for ACE, 250/>320 for ANT, 366/>400 for BAA and BAP, 270/>400 for BBF, BPE, BKF, CHR, DBA, FLA, IDN (after dipping in nitromethane), 250/>320 for FLU and PHE and at 270/>320 for PYR. Polynomial regression with high coefficients of correlation and low standard deviations. Coeffivients of variation for repeatability and reproducibility were below 10 %. This method allows the determination of 14 of the 16 PAHs. With LODs of 0.1-0.2 mg/kg the demands for the German GS mark (label for checked safety) are fulfilled. The results by HPTLC were comparable to results obtained by GC-MS.

J. Liq. Chromatogr. Relat. Technol. 37, 2846-2856 (2014). HPTLC fingerprinting of materials originated from cold surfaces of biomass fuel and fossils-fired home heating ovens, as well as truck exhaust systems and asphalt concrete samples on RP-18 with n-hexane. Fluorescence detection at UV 366 nm and absorbance detection (fluorescence inhibition) at UV 254 nm. The method can be used to identify wrong combustion parameters or unsuitable fuel.

Microwave assisted synthesis of berberrubine and its assessment as fluorescent chemosensor for alkanes. Tetrahedron. 71, 6148-6154 (2015). HPTLC of berberrubine and mixtures with known proportions of alkanes with different number of C atoms on silica gel with n-heptane over 30 mm migration distance, followed by heating at 65 °C for 30 min. Quantitation of non-absorbing alkanes by fluorescence determination at UV 365/>400 nm.

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.

of Chromatogr. (Se Pu) 2, 268-272 (1985). (Chinese) (Analysis of the additives in oil products by thin-layer chromatography). A review of the application of TLC in the analysis of the additives in oil products commenting on 28 literature references.

J. Agric. Food Chem. 33, 95-98 (1985). TLC determination of 4-chlorobenzotrichloride and metabolites on silica with hexane - ethyl acetate - acetic acid 2:1:0.1, hexane - acetic acid 10:1, hexane - ether 5:1 and hexane.

J. Agric. Food Chem. 34, 429-433 (1986). TLC separation of wax classes (alkanes, aldehydes, alcohols and acids) on silica with CCl4, CHCl3, CHCl3 - EtOH 99:1, CHCl3 - EtOH - acetic acid 98:1:l. Detection by spraying with 3 % CrO3 in sulfuric acid, followed by charring at 120 °C; detection of diketones by UV 254 nm or with spraying with 1 % aqueous Fast Blue solution, of aldehydes by spraying with 1 % aqueous solution of purpald.