J. Planar Chromatogr. 3, 359-361 (1990). HPTLC of phytoecdysteroids on silica with chloroform - ethanol 4:1. Detection by fluorescence quenching at 254 nm. Mass spectra directly from the aluminium-backed silica gel TLC plate. The coupling of TLC with off-line MS-MS without the need for prior elution of the separated ecdysteroids provided significant additional information on the molecular structure of the ecdysteroids compared with previous studies employing only TLC-FAB-MS.

J. Planar Chromatogr. 4, 230-234 (1991). TLC of polystyrene oligomers on silica with carbon tetrachloride – hexane 13:6; visualization with a 0.1% solution of bromathymol blue. MS after cutting and extraction.

J. Chinese Herb Med. (Zhongcaoyao) 23, 461-462 (1992). TLC of flavones on polyamide with ethyl acetate - methanol - water 6:3:1, and ethanol - water 4:1. Detection under UV 254 nm, and by spraying with 5% AlCl3 in ethanol. Quantification of total flavones after elution by photometry at 340 nm.

J. Planar Chromatogr. 7, 344-348 (1994), Use of AMD for the improvement of the identification and determination limit by FTIR of hexobarbital to between one half and one third of their original values; AMD can be recommended for such application. When thinner silica gel layers on a reflecting carrier are used, these values can be reduced once again (by half). In order to achieve optimum results, certain procedures must be followed: dot spotting and mobile reference measurement taken at the level of the substance to be analyzed. Detection limits for hexobarbital = 55 ng, phenobarbital = 55 ng, caffeine = 30 ng, salicylic acid = 220 ng and ascorbic acid = 240 ng. The reasons for and significance of these different limits of identification are discussed.

Chinese J. Pharm. Anal. (Yaowu Fenxi Zazhi) 15, 17-20 (1995). TLC of the extract from etoposide on silica with dichloromethane - ether - methanol 20:24:1. Detection under UV 254 nm. Identification of 4a epi-etoposide and 2ß piero-etoposide by UV, IR, MS and NMR.

Vergleich UV/Vis und IR. (Spectral detection in thin layer chromatography - Comparison UV/Vis and IR). Dünnschicht-Chromatographie InCom Sonderband 1996, 1-13. Description of spectral UV/Vis detection and direct HPTLC-FTIR-in situ measurement, in particular for investigation of mixtures where spectral detection can be used directly for quantification. Discussion of detection limits and possibilities for identification. Substances chromatographed: 7,7'-diethylamino-4-methylcoumarin, perazine, caffeine, nitrazepam.

J. Chromatogr. Sci. 33, 417-425 (1995). Quantitative hydrocarbon group type analysis of a deasphalted heavy oil from petroleum and its derived hydrocracking products by configuration of detector, an automatic sample spotter, a careful selection of the operating parameters. Use of the method for the detection and quantification of saturates, alkylaromatics, aromatics, polar and an uneluted fraction. Discussion of the repeatability and the linearity range for each separated fraction.

J. AOAC Int. 81, 329-332 (1998). Critical evaluation of the present state of hyphenated techniques in thin-layer chromatography, enumeration of possible advantages and disadvantages of the newest developments, and prerequisites for the successful application of the newest results. Compilation and evaluation of methods coupling TLC to other analytical procedures - such as GC, MS, Raman spectroscopy, Fourier transformation infrared spectrometry (FTIR), square-wave stripping voltammetry, solid-phase nuclear magnetic resonance spectroscopy, atomic absorption spectrometry, and HPLC.