Arzneim.-Forsch. 40, 651-653 (1989). TLC of 20 ß-blockers on silica with 10 different eluents. Detection under UV 254 nm, by spraying with o-phthalaldehyde (detection limit 0.5 ng) or ammonium vanadate/sulfuric acid (detection limit 50 ng) or prechromatographic derivatization with dansyl chloride (detection limit 0.2 ng).

J. Planar Chromatogr. 4, 266-267 (1991). TLC of baygon, carbaryl, and carbofuran on silica with hexane – acetone 4:1. Detection with diazotized arylamines (aniline, p-chloroaniline, p-toluidine, sulfanilic acid, m-nitroaniline, sulfadiazine, and dapsone); dapsone was found to be the most suitable detection reagent. Detection limit ca. 0.1 µg. Simple, rapid and sensitive TLC method.

J. Liquid Chromatogr. 16, 1833-1843 (1993). Normal-phase, reverse-phase and chelation TLC of Pb2+, Hg22+, Hg2+, Ti+, Bi3+, Sn4+, and Sb3+ on silica, silica impregnated with DMSO or 20% tributyl amine or 20% tributyl phosphate in benzene, and silica impregnated with EDTA, with DMSO - HNO3 and DMSO - HCl systems as mobile phases. Discussion of the effect of solvent composition on migration of cations, and the effect of EDTA and DMSO on Rf values. Quantitative separation of Pb2+ from the others.

J. Planar Chromatogr. 8, 69-72 (1995). TLC and HPTLC of hepatotoxins in aqueous and algal samples on silica and RP-18 with 13 different mobile phase systems. Scanning densitometry at 196 nm, confirmation by multiwavelength scanning. The method described is a rapid and facile test, which can be performed in small laboratories, for screening water sources or blooms for cyanobacterial toxins in a hygienic setting.

J. Planar Chromatogr. 9, 450-455 (1996). Analytical TLC of aminoarenes (aminonaphthalene, -phenylnaphthalene, -pyrene, -fluoroanthene, -anthracene, -phenanthrene, -quinoline, isoquinoline, -chrysene) on RP-18 with acetonitrile - water 9:1; semipreparative TLC on aluminium oxide with dichloromethane - hexane - ether 1:1:1. Visualization under UV 254 and 366 nm.

foliage. J. Planar Chromatogr. 17, 218-223 (2004). TLC of gamma-coniceine and coniin on silica gel with chloroform - ethanol 13:7. Detection and quantification by spraying with Dragendorff’s spray reagent and visual comparison of the intensity of the colour of the sample spots with that of the spots of the corresponding standards. Detection limits wered 1.7 and 0.7 µg per spot for coniine and gamma-coniceine, respectively.

J. Liq. Chromatogr. & Relat. Technol. 30, 1105-1114 (2007). TLC of salvinorin A, a potent naturally occuring kappa-opioid selective agonist, on silica gel and on RP-18 with n-hexane - ethyl acetate 1:1. Detection by spraying with vanillin - phosphoric acid reagent followed by heating.

J. Liq. Chromatogr. Relat. Technol. 31, 1925-1942 (2008). HPTLC of benzo[a]pyrene, benzo[b]fluoroanthene, benzo[k]fluoroanthene, benzo[ghi]perylene, fluoroanthene, 2-methylanthracene, and indeno[1,2,3-cd]pyrene on silica gel impregnated with caffeinesolution (by dipping in a solution of 2 g caffeine in 120 mL acetonitrile for 20 min, followed by drying for 15 min at 120 °C) with isopropyl acetate - acetonitrile 7:3 in a twin trough chamber at -20 °C. For fluorescence enhancement the plates were dipped in a solution of paraffin - n-hexane 1:1 and dried for 1 min in cold air. Quantitative determination by fluorescence measurement at 366/>400 nm. The method can be applied for control of the limit levels of the six polycyclic aromatoc hydrocarbons in water. The limits of quantitation were 0.08-0.44 ng/band depending on the substance. Linearity showed coefficients of correlation = 0.9920. The recoveries by stir bar sorptive extraction (n = 3) were between 87-100 % depending on the substance. The whole procedure was optimized to reach a sample throughput of 30 water samples, inclusive sample preparation by stir-bar sorptive extraction (SBSE), per 8-hour day.