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. Chromatogr. 624, 353-367 (1992). Review with 62 references on some of the most important procedures for pesticide residue analysis, involving TLC as well as GC, HPLC, SFC and their coupling with sensitive and selective detection methods.

J. Chromatogr. A 754, 301-331 (1996). A review with 185 references. Discussion of the basic principles and recent developments in the extraction and quantification by various techniques including TLC.

J. Chromatogr. 396, 437-440 (1987). Reversed-phase TLC on RP-18 silica with 1. methanol, 2. ethanol, 3. acetonitrile, 4. acetone, 5. ethyl acetate, and 6. chloroform. Detection under UV 254 nm. (More than 40 solvent systems were tested.)

J. Liq. Chromatogr. Relat. Technol. 36, 2378-2386 (2013). 2D-HPTLC of testosterone (1), progesterone (2), hydrocortison (3), estriol (4), ethinylestradiol (5), sitosterol (6), estrone (7), prednisolone (8), estradiol (9) and norethindrone (10) in waste water on cyanopropyl silica gel with dichloromethane - methanol - cyclohexane 19:1:12 in the first direction and water - acetonitrile - ethanol - dioxane 8:2:1:1+1 drop ammonia in the second direction. Detection by heating at 110 °C for 1 min followed by dipping into a mixture of sulfuric acid 98 % - water 1:49 and heating at 110°C for 10 min. Quantitative determination by absorbance measurement at 366 nm. The hRf values for the first and second direction were 80 and 5 for (1), 72 and 9 for (2), 32 and 21 for (3), 8 and 31 for (4), 31 and 11 for (5), 80 and 0 for (6), 44 and 12 for (7), 12 and 34 for (8), 71 and 1 for (9) and 62 and 16 for (10). LOD and LOQ for 17alpha-ethinylestradiol were 1 and 2 ng/zone, respectively.

J. Chromatogr. Sci. 28, 400-402 (1990). TLC of Fe (III), Ni (II), Cu (II), Pb (II), Zn (II), and Mn (II) on silica with aqueous solutions of sodium malonate and sodium malate. Discussion of the variation in Rf values of metal ions with respect to pH and concentration of mobile phase additives. Determination of the optimum conditions for separation of a three-component mixture. Application for separation and detection of metal ions in industrial waste water sample containing metal ions.