J. Planar Chromatogr. 4, 246-250 (1991). HPTLC of benzodiazepines, 3,4-methylenedioxyamphetamine, N-methyl-3,4-methylenedioxyamphetamine, N-ethyl-3,4-methylene-dioxyamphetamine) and caffeine on silica. Eluents for benzodiazepines: trichoromethane – acetone 8:2; MDA, MDMA, and MDE were developed with a 25 step AMD gradient employing toluene, 2-propanol, NH3, ether and ethanol; eluent for caffeine was dichloromethane – methanol 9:1. Detection by FTIR scanning.

J. Chinese Herb Med. (Zhongcaoyao) 23, 633-634 (1992). TLC of cinnamyl aldehyde on silica with petrol ether - ethyl acetate 85:15. Detection under UV 254 nm and by spraying with 2,4-dinitrophenylhydrazine. Quantification by spectrophotometry at 286 nm.

Chromatographia 36, 293-296 (1993). Study of the effectiveness of 3-glycidoxypropyltreated TLC plates in the determination midazolam intoxication by TLC/fast atom bombardment MS. TLC of midazolam with chloroform. Identification of midazolam intoxication by TLC/FAB-MS, after applying the technique of diffused spot condensation on the plates. Improvement of the detection limit for midazolam in the serum of intoxication patient by 30 times.

J. AOAC Int. 78, 585-591 (1995). After separation of sample components by TLC, the area corresponding to the Rf of the compound of interest is scraped off and eluted with immunoassay buffer. The ability of TLC to separate a series of compounds coupled with immunoassay determination of samples in parallel can provide an efficient, inexpensive, and rapid means of quantifying samples in more complex matrices.

Chinese J. Pharm. Anal. (Yaowu Fenxi Zazhi) 15 (3), 26-30 (1995). TLC of the essential oil on silica with petrol ether - ethyl acetate 2:1. Detection under UV 254 nm. Identification of 45 constituents by GC-MS, and UV, IR, and NMR after elution.

J. Chinese Trad. Patent Med. (Zhongchengyao) 18 (5), 3-4 (1996). TLC on silica with petrol ether - chloroform - acetic acid 5:9:1. Detection by exposure to iodine vapor. Identification by comparison with standards of astragaloside and ferulic acid. Quantification of gastrodine by spectrophotometry.

A newly developed rapid tool for studying drug metabolism. J. Planar Chromatogr. 10, 399-405 (1997). Comparison of advantages and disadvantages of combined thin-layer chromatography - digital autoradiography (TLC-DAR) and other techniques used for plate evaluation in planar chromatography. It is demonstrated that this newly developed method can be widely used for the analysis of a variety of biological samples and, because information is obtained quickly at low cost, it is an excellent tool in metabolism research. DAR is a convenient and extremely rapid means of locating and quantifying radioactive metabolites on the TLC plate after separation and/or purification. Example used: TLC on silica of deramciclane (a new anxiolytic compound) and metabolites with butanol - acetic acid - water 4:1:1.

J. Chromatogr. A 774, 313-377 (1997). TLC of 9 inorganic anions and 11 metal ions on cellulose, silica and their mixtures with mixed solvent systems containing 0.1 M NH4OH and acetone. Detection by spraying with 7 reagents. Discussion of the retention behavior. Quantitation of SCN- by spectrophotometry at 460 nm, using acidic FeCl3 solution as chromogenic reagent. Use of the proposed TLC - colorimetric method to fortified samples of the title matrices.