J. Planar Chromatogr. 13, 20-24 (2000). TLC of phenols, aldehydes, ketones, quinones, carboxylic acids, aniline, pyridine, quinoline, acridine, pyrrole, indole, carbazole derivatives on silica gel with dichloromethane. Detection by UV, standard visualization agents and 0.5% 2,2’-bipyridine and 0.5% FeCl3 in ethanol, 0.3% ninhydrin in 1-propanol with acetic acid, 1% picryl chloride in ethanol and 4-dimethylaminobenzaldehyde in 6 M HCl and ethanol.

Chinese J. of Jiangxi Agr. Sci. 25 (5), 117-119 (2013). Meat ducks used to be unhaired by employing certain safe depilating agents, however, a hot liquid composed of rosin and paraffin has found to be illegally applied by dipping into the hot liquid, so as to glue the liquid rosin closely onto the duck epidermis, and then by peeling the depilating agent after cooling. In this process some rosin components, such as abietic acid, may remain in the duck epidermis and even permeate the duck meat, which may be harmful to humans if daily intake exceeds 1 mg/kg body weight. Description of a procedure for testing colophony residues in the epidermis of meat ducks unhaired with rosin. TLC of the sample extracts (prepared by SPE), the standard abietic acid and depilating agent components (food grade wax and rosin glycerol ester), on silica gel with petroleum ether (60-90 °C) – ethyl acetate – glacial acetic acid 90:10:1, detection by spraying with 5 % sulfuric acid in ethanol and heating at 85 °C until the zones are visible in daylight. The LOD of abietic acid was 0.04 g/L. The method was successfully applied to the analysis of samples obtained from meat ducks unhaired with the depilating agents A) rosin - food grade wax 29:20, and B) food grade rosin glycerol ester – food grade wax 29:20, in the production conditions simulating a livestock and poultry processing enterprise.

Biomed. Chromatogr. 12, 267-270 (1998). TLC on silica gel with chloroform - dichloromethane 1:3. Detection under UV 254 nm. Quantitation by densitometry at 275 nm. Investigation of the influence of physiological state of teeth on levels of formaldehyde in teeth tissues.

Food Addit. Contam. 31, 1929-1938 (2014). TLC of stearoyl-lactylates in food on silica gel with hexane - diethyl ether 1:1 and 1 % acetic acid. Detection by spraying with 0.05 % primuline solution in acetone - water 4:1. Qualitative identification at UV 366 nm.

J. Planar Chromatogr. 2, 24-27 (1989). HPTLC of glycerylmonostearate on silica with hexane - ethyl acetate - methanol 7:2:1. Postchromatographic derivatization by dipping into 0.05% methanolic solution of 6-(p-toluidino)-2-naphtalene-sulfonic acid (potassium salt) and then under UV 365 nm. HPTLC of glyceryl monodiricinolate on silica with ethyl acetate - dichloromethane - methanol - formic acid 13:6:1:0.1. Post-chromatographic derivatization by dipping into 3% ethanolic solution of molybdato phosphoric acid and heating to 120°C for 15 min.

Planar Chromatogr. 8, 382 - 387 (1995). HPTLC of a polyoxyethylene glycerol trioleate nonionic surfactant (Tagat TO) on silica with MEK - acetone - water 50:5:X, X = 0, 3, 6, 9 in a twin-trough chamber. After drying detection by dipping into a solution containing copper(II)sulfate and phosphoric acid, followed by heating at 180°C for 20 min. Quantification by densitometry at 500 nm from the back of plate after covering the front with a glass plate. Detection limit 1.25 mg/mL. New sensitive, specific, and reproducible TLC method.

J. Planar Chromatogr. 29, 306-309 (2016). HPTLC of some red, rose, and white wines on silica gel with ethyl acetate – acetic acid – formic acid – water 10:1:1:2. Antioxidant activity determination by dipping into a 0.04 M methanolic 2,2-diphenyl-1-picrylhydrazyl (DPPH radical reagent) solution (1) and into a 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) solution (2; prepared by mixing 7 mM ABTS diammonium salt solution with 2.45 mM potassium persulfate solution 1:1). The plates were then dried in the fume hood and stored in the dark. The antioxidant activities were determined after 10 and 30 min reaction time. Method (2) was more sensitive than the DPPH assay.

Chinese J. Petrol. Proces. (Shiyou Lianzhi) 24, 59-63 (1993). Preparative TLC of antioxidants on silica with non-polar solvent systems. Detection by spraying with palladium chloride reagent. Identification by IR and NMR.