Chromatographia 21, 234-238 (1986). TLC of ecdysteroids on silica with a) dichloromethane - ethanol 85:15, b) ethyl acetate - methanol - NH3 85:10:5, c) ethyl acetate - methanol - water 8:2:1. Detection under UV at 254 nm or spraying with vanillin reagent.

Part 2. Application of fluorescence-based spectroscopic techniques for off-line detection. Anal. Chim. Acta 193, 193-207 (1987). Identification and determination of the compounds eluted from LC and collected on a TLC plate by direct flurescence emission, fluorescence excitation emission spectra and fluorescence line-narrowing spectroscopy with tetracene and benz(K)fluoranthene as model compounds. Discussion of the possibility of widening the application of the technique. Detection limit, pg level for very selective narrow-line fluorescence.

J. China Pharm. Univ. 18, 205-206 (1987) (Zhongguo Yaoke Daxue Xuebao). TLC on silica with heptane - ethyl acetate - ethanol 5:5:1. Detection by spraying with 0.5M sulfuric acid. Elution with ethanol. Quantification by UV spectrophotometry.

J. Chromatogr. 442, 420-423 (1988). TLC of N- (4-aminobenzoyl)-g-oligo (L-glutamic acid)S on silica with methanol - 25% NH3 - acetic acid 15:2:1. Detection by spraying twice with 1% triethylamine in acetone and 0. 01% fluorescamine in acetone and viewing under UV 366 nm. Elution with potassium phosphate buffer (pH 7. 0). Quantification by fluorescence spectrophotometry at 400 nm excitation and 490nm emission.

J. Chromatogr. 488, 129-143 (1989). Outline of various neurochemical isolation procedures for the analysis of several monoamine neurotransmitters/neuromodulators and their principal oxidatively deaminated metabolites. TLC of dansyl derivatives of trace amines on silica with various solvent systems. Identification and quantification by MSEI ionisation followed by selected-ion monitoring of their molecular ions with deuterated homologues as internal standards.

Jap. Hygienic Chem. (Eisei Kagaku) 36, 28-35 (1990). Investigation of the analysis of quaternary ammonium compounds by TLC combined with curie-point pyrolyzer and GC/MS. Detection limit 0.01-10 ng

J. Planar Chromatogr. 4, 171-173 (1991). Measuring system for UV spectra consisting of a deuterium lamp light source, a double arm fiber optic bundle („Y“ fiber optic bundle), which is used both to direct the UV light onto the TLC plate and to collect the scattered light and direct it to a photodiode array detector supported by a computer equipped with commercially available software. Spectra may be recorded from l = 200-600 nm with a wavelength precision of 0.1 nm and a resolution of 2.4 nm.

Chinese J. Chromatogr. (Sepu) 10, 339-341 (1992). TLC of shale oil on silica with toluene, toluene - acetone 9:1, and acetone. Elution of alkane and alkene, aromatics, oxygen and nitrogen containing compounds with hexane - toluene 4:1. Characterization by GC-MS. 100 compounds were identified.