J. Planar Chromatogr. 33, 329-340 (2020). Review of analysis of heavy metal ions by TLC, including micellar, soil and reversed-phase TLC between 2000 and 2019. The review highlighted the better performance of micellar TLC and the use of cationic and anionic surfactants.

J. Planar Chromatogr. 32, 421-429 (2019). HPTLC of levamisole (1), pyrantel pamoate (2), albendazole (3), and febantel (4) on silica gel with dichloromethane - methanol - formic acid 18:1:1. Quantitative determination by absorbance measurement at 254 nm. The hRF values for (1) to (4) were 10, 15, 47 and 79, respectively. Linearity was between 600 and 1500 µg/L for (1), 400 and 1000 µg/L for (2), 200 and 1000 µg/L for (3) and (4). The obtained RSD values were in the range from 7.0 % to 8.8 % for intra-day precision and from 8.1 % to 13.1 % for inter-day precision (n=3). The LOD and LOQ were 300 and 600 µg/L for (1), 200 and 400 µg/L for (2) and 100 and 200 µg/L for (3) and (4), respectively. Recovery rate was above 95 % for (1) to (4).

J. Planar Chromatogr. 32, 173-182 (2019). HPTLC of chlorinated metformin samples with genotoxic effect obtained by umu assay (Salmonella typhimurium TA1535/pSK1002 Assay) on silica gel in a gradient development with methanol - formic acid 2000:1, dichloromethane and n-hexane. A TLC-MS interface was used for further analysis by LC-high-resolution mass spectrometry. 

J. Planar Chromatogr. 28, 190-204 (2015). The analysis of multiple pesticide residues in environmental samples is often impossible in a single-step process. Comprehensive 2D planar chromatography on mono and bilayers, coupled-layer chromatography, combination of multidimensional planar chromatographic techniques, hyphenated methods are proved to be suitable.

J. Planar Chromatogr. 8, 300-305 (1995). TLC and HPTLC of 39 phenols on RP-18 silica and silica in 12 mobile phase systems, i. a. toluene - acetone 4:1, acetonitrile - water 7:3, chloroform, toluene. Detection under UV at 215 nm and 254 nm. Also indication of detection limits. Easy and economic TLC procedure.

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.

Acta Chromatographica No. 7, 149-158 (1997). TLC of nitro- and azaarenes (nitronaphthalene, nitrofluorene, nitroanthracene, nitropyrene, quinoline, azafluorene, benzo(h)quinoline) on silica with acetonitrile - water 9:1 for nitroarenes and methanol - water for azaarenes. Detection under UV 254 and 366 nm and by spraying with specific reagents for the detection of functional groups: 15 % tin(II) chloride in 36 % hydrochloric acid and p-dimethylaminobenzaldehyde for nitroarenes and Dragendorff's reagent for azaarenes. Detection limit for nitroarenes 25 - 100 ng, for azaarenes 50 - 100 ng.

CBS 113, 5-7 (2014). HPTLC/AMD as a screening method to identify previously unconsidered_x000D_
substances. HPTLC of water samples on silica gel LiChrospher in the AMD 2 with a 25-step gradient, starting in the isocratic mode with 5 steps acetonitrile – dichloromethane 1:1 for focusing, followed by 15 steps from acetonitrile – dichloromethane 1:1 to dichloromethane and then 5 steps from dichloromethane – n-hexane 4:1 to n-hexane. Final migration distance 80 mm. Detection under UV 254 nm, UV 366 nm and white light. Densitometric evaluation by absorbance measurement at 190, 200, 220, 240, 260, 280, and 300 nm. Target zones were eluted with the TLC-MS Interface offline with water – acetonitrile 1:1 and deuterium oxide – acetonitrile 1:1, respectively, each with an addition of 5 mmol/L ammonium acetate, at a flow rate of 0.2 mL/min using the oval elution head (4 x 2 mm) for analysis with a QTOF/MS. With the molecular formula information, different databases were searched and H/D exchange (replacing protons in the molecule by deuterium which leads to a mass shift in the ESI MS spectra) was used to reduce the quantity of possible structures.