Proc. Intern. Symp. on Planar Separations, Planar Chromatography 2001, pp. 55-66. TLC of fungicides (imazalil, fenpropidin, benalaxyl, isoproteron, metoxuron, carbendazim, fenpropimorph, iprodion, epoxiconazol) on silica gel with AMD with a 33 step solvent gradient based on dichloromethane with acetonitrile as polar and n-hexane as nonpolar component described in DIN 38 407 Part 11. Detection of the fungicide effect of the samples using mould spores as detection agent.

J. Planar Chromatogr. 5, 465-467 (1992). TLC of 8 azaarenes on cellulose with DMF - water mixtures 65:35, 50:50, 35:65, 20:80, 10:90. After drying visualization under UV 254 nm and exposure to trifluoroacetic acid vapor followed by visualization under UV.

J. Planar Chromatogr. 27, 287-293 (2014). HPTLC of ciprofloxacin HCl (1) and moxifloxacin HCl (2) in industrial wastewater on silica gel with methanol - ammonia - methylene chloride 11:7:4. Quantitative determination by absorbance measurement at 278 nm. The hRF values for (1) and (2) were 43 and 54, respectively. Linearity was in the range of 250-2500 ng/zone for (1) and 1000-50000 ng/zone for (2). The intermediate/interday/intra-day precisions were below 1 % (n=3). The LOD and LOQ were 110 ad 335 ng/zone for (1) and 101 and 305 ng/zone for (2), respectively. Recoveries were between 79.6 and 91.5 % for both (1) and (2). Results were comparable to a HPLC method.

J. Chromatogr. 589, 390-393 (1992). TLC on silica with a) chloroform - methanol 8:2, and b) chloroform - methanol - acetic acid 80:20:2. Detection by immersing in 4-methoxybenzaldehyde solution and heating at 130 °C for 2 min. Quantification by fluorodensitometry at 366 nm.

J. Planar Chromatogr. 18, 423-426 (2005). HPTLC of antibiotics (sulfadimidine, sulfadiazine, sulfaguanidine, trimethoprim) on silica gel without chamber saturation in a twin-trough chamber with chloroform - methanol 89:11. Quantification by videodensitometry at 254 nm. Limit of detection was 0.05 µg per spot for sulfadimidine, sulfadiazine, and sulfaguanidine, and 0.1 µg per spot for trimethoprim.

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.

CBS 114, 13-15 (2015). To test the new HTpSPE–TOFMS screening, TLC of a pesticide mixture (acetamiprid, azoxystrobin, chlorpyrifos, fenarimol, mepanipyrim, penconazole, pirimicarb) in several plant matrices (cucumber, tomato, grape, apple extracts) on amino layer pre-treated by dipping in 2 % formic acid solution in acetonitrile and drying for 10 min. Development with 10 mL acetonitrile, migration distance 75 mm, drying 5 min; second development in the backwards direction with 10 mL acetone, migration distance 45 mm, drying 3 min. Detection under UV 254 nm, UV 366 nm and white light. For HTpSPE and μL-flow injection analysis–TOFMS the target analyte zone was eluted with the TLC–MS Interface into autosampler vials with acetonitrile – 10 mM ammonium formate 1:1, flow rate 0.2 mL/min, Elution time was 60 s. An HPLC system was coupled via a PEEK capillary and a nano-electrospray ionization interface to a TOFMS without an analytical column. The mean recovery for a pesticide mixture spiked into fruit and vegetable extracts was between 86 % and 116 % with %RSDs of 1.5–10 % (n = 5).

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.