Chinese J. Chromatogr. (Sepu) 24 (1), 69-72 (2006). TLC of dimethyl phthalate (DMP), diethyl phthalate (DEP), di-n-butyl phthalate (DBP) and di (2-ethylhexyl) phthalate (DEHP) in plastic food-packaging bags. Extraction with ethanol by ultrasonication, followed by filtration through a membrane of 0.45 µm. Development with ethyl acetate - anhydrous ether - isooctane 1:4:15 on silica gel. Quantitative determination by densitometry at 275 nm (reference wavelength 340 nm) by use of an external standard. Good linearities were obtained for DMP, DEP, DBP and DEHP. The detection limits were 2.1 ng for DMP, 2.4 ng for DEP, 3.4 ng for DBP and 4.0 ng for DEHP. The relative standard deviations of the four phthalates were 2.8-3.5 %. The recoveries of the four phthalate standards in real sample were 79-111 %. The method presented has the advantages of high precision, high sensitivity, small sample size, and simple pretreatment. The contents in real samples were close to the results by gas chromatography.

J. Chromatogr. 349, 295-300 (1985). Study on the interaction of the membrane phospholipid, dioleylphosphatidyl choline with 23 nonionic tensides by charge-transfer. Reversed-phase TLC on cellulose with water - ethanol 12:13. Exposure of the chromatogram to iodine vapor. Discussion of the dependence of the lipophilicity of dioleoyl phosphatidyl choline on tenside concentration of eluent.

Chinese J. Chromatogr. (Sepu) 10, 295-297 (1992). Determination of the number of ethylene oxide and its distribution in four oxyethylenated anionic surfactants by TLC and field desorption MS. Comparison of the results obtained by one-dimensional TLC to those obtained by two-dimensional TLC, and of the results obtained by TLC to those obtained by field desorption MS.

Proc. Intern. Symp. on Planar Separations, Planar Chromatography 2001, pp. 241-250. Preparative TLC of b-alkyl-polyethyleneoxy-propionitrile derivatives on silica gel with e.g. perchloroethylene and acetone. Visualization with 2% iodine reagent. IR analysis after removal of the compound-containing sorbent and extraction as KBr tablet or solution.

J. Agric. Food Chem. 34, 1-5 (1986). TLC separation of DHDP (3,3'-bis (1,1-dimethylethyl)-5,5'-dimethoxy-1,1'-biphenyl-2,2'-diol) on silica with dichloromethane - methanol - acetic acid 80:20:1 and hexane - benzene - ether 90:30:3. After cutting the plate into portions, determination of (14C) compounds by liquid scintillation; detection by autoradiography.

Helv. Chim. Acta 80, 1144-1152 (1997). TLC of monoterpene glycosides on silica with butanol - propanol - water 2:1:3. Detection under UV 254 and 365 nm or with Godin reagent. TLC autographic assay for the detection of free radical scavenging properties by spraying with a 0.2% solution of DPPH (2,2-diphenyl-1-(2,4,6-trinitrophenyl)hydrazyl) in methanol. After 30 min, active compounds appear as yellow spots against a purple background.

J. Planar Chromatogr. 17, 244-249 (2004). TLC of thirty compounds (coumarin derivatives) including by-products on silica gel with ethyl acetate - hexane 2:3 or, for more polar synthesized compounds, with methanol - dichloromethane 7:93 in a saturated chamber. Detection under UV light at 254 nm, and by derivatization if necessary, e. g. by iodine reagent. Quantitative determination by densitometry at 292 - 363 nm. Direct screening of the reaction mixture on the plate for antioxidant activity against the 1,1-diphenyl-2-picrylhydrazyl (DPPH) test radical.

Bunseki Kagaku (Jap. Anal. Chem.) 37, T87-T91 (1988). Reversed-phase TLC of Zn dialkyldithiophosphates and polymer additives on C-18 silica with water - acetone mixtures and dichloromethane mixtures. Detection by spraying with 2,6-dichloroqinone chlorimide reagent and with sulfonic acid, resp.. Also TLC on silica with benzene - methanol mixtures. Detection by spraying with sulfonic acid and pinacryptol yellow reagent. Also TLC of succinic acid derivatives, organic dispersants on silica with ethyl ether - benzene - acetic acid mixtures. Detection by spraying with ninhydrin and heating at 120°C.