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.

Talanta, 80 (5), 2007-2015 (2010). Presentation of a method for determination of oxybutynin hydrochloride (OX) in presence of its degradation product and additives in its pharmaceutical formulations. UV spectrophotometry using the first derivative of ratio spectra and measurment at 216 nm. Chemometric analysis using principal component regression and partial least-squares. HPTLC of OX and its degradation products methylparaben and propylparaben on silica gel with chloroform - methanol - ammonia - triethylamine 500:15:2.5:1. Quantitative determination by densitometry at 220 nm. Comparison of the results obtained with all three methods showed no significant differences.

J. Agric. Food Chem. 34, 162-170 (1986). TLC of cinmethylin (7-oxabicyclo (2.2.1 ) heptane, d-methyl-4-(1-methylethyl)-2- ( (2-methylphenyl) methoxy)-, exo and metabolites on silica 60 F 254 in one- and two-dimensional mode with toluene 2-propanol - acetic acid 1 50:20:1.5, hexane -2-propanol - acetic acid 20:30:1, ethyl acetate - hexane - chloroform - acetic acid 100:50:5:1.5. Detection by autoradiography; quantification by radioactivity measurement after extraction.

J. Planar Chromatogr. 6, 368-371 (1993). Investigation of the linearity, sensitivity, and resolution of a new bio-imaging analyzer TLC plate scanner and comparison of the results with those obtained using a linear analyzer or conventional X-ray autoradiography. The instrument has a wide linear dynamic range: from 10 to 11'000 dpm for an individual component; the sensitivity was significantly, i.e. 50 to 100 times, higher; the resolution was far better than that of the linear analyzer and comparable with that of autoradiography.

Ital. J. Food Sci. 18, 287-294 (2006). The ratio of alpha-solanine to alpha-chaconine of tuber sprouts was determined by TLC on silica gel with methanol – chloroform – 1 % aqueous ammonium hydroxide 2:2:1. For quantitative determination zones were isolated from the plate, extracted with 2 % aqueous acetic acid, and measured spectrophotometrically at 420 nm with methyl orange.

J. Chromatogr. A 1217(34), 5470-5476 (2010). Description of a combination method using high-speed counter-current chromatography and TLC as an antioxidant assay to separate antioxidant components from the fruits of Psoralea corylifolia by dipping in a ethanolic DPPH radical solution (2.54 mM) for autography. Bands with the DPPH scavenging activity were observed as white yellow bands on a purple background. High-speed counter-current chromatography of five flavonoids and three coumarins from the fruits of P. corylifolia with n-hexane - ethyl acetate - methanol - water 10:11:13:1. Preparative TLC for clean-up improves the substance yield from the fruits.

Anal. Biochem. 178, 421-426 (1989). TLC of various nucleotide sugars from both high- and low-molecular-weight sugar acceptors on PEI-cellulose with 1 mM sodium phosphate buffer (pH 8.0). Determination of glycosyltransferase activity by autoradiography. Comparison of the results with those obtained by GPC and micropartitioning filtration.

Anal. Biochem. 214, 329-331 (1993). TLC of title compounds on silica with 2-methylbutan-2-ol - t-butanol - 25% NH3 - acetone 1:2:2:8. Detection by exposing for 4 or 16 hrs to a storage phosphor screen. Quantification by autoradiography. Comparison of the results with those obtained by HPLC.