J. Planar Chromatogr. 6, 425-527 (1993). TLC of ivermectin (as a fluorescent derivative, prepared with trifluoroacetic anhydride acc. to De Montigny et al., J. Pharm. & Biol. Anal. 8, (1990) 507-511) on silica with ethyl acetate - chloroform 1:3 as mobile phase. Quantification by densitometry at 365 nm.

J. AOAC Int. 77, 637-646 (1994). TLC of aflatoxins B1, B2, G1, and G2 on silica with chloroform - acetone 9:1 (1 h). After evaporation of solvent for 5 min in a fume hood followed by 2 min in 50°C forced draft oven examination under long-wave UV. Quantification by fluorodensitometry 365/>430 nm.

J. Food Hyg. Soc. of Jap. 34, 512-516 (1993). Description of reverse-phase TLC/FABMS method incorporating an analyte condensation technique for the identification of 12 coal tar dyes, using the magic bullet matrix (a 3:1 dithiothereitol-dithio-erythritol mixture). TLC of xanthene and other dyes on RP-18 with MEK - methanol - 5% aqueous sodium sulfate solution 1:1:1, and 2) methanol - acetonitrile - 5% aqueous sodium detection limit 150-fold with good reproducibility by using the condensation technique.

(German). Dtsch. Lebensm. Rdsch. 91, 14-17 (1995). TLC of phenolic components (i.a gallic acid, protocatechuic acid, catechin, chlorogenic acid, epicatechin) after separation from red wine pigments on cellulose with 20% methanol (pH 2.5); visualization after drying by dipping for 1 min into a 5% iron(III)chloride solution. Quantification by densitometry at 700 nm. - TLC of red wine pigments on silica (after extraction by column chromatography on polyamide-6 powder and a mixture of butanol - acetic acid - water 4:1:5) with butanol - butyl acetate - formic acid - water 13:5:2:3. Quantification by densitometry at 540 nm. Simple chromatographic procedure for routine analysis.

Analyst 119, 2737-2741 (1994). Description of Charm Test II receptor assays and TLC-bioautography for ß-lactams, sulfonamides, (dihydro)-streptomycin and erythromycin applied to 257 bovine muscle and kidney samples, and 215 porcine muscle and kidney samples. Quantification of penicillin G by HPLC, and of sulfonamides by TLC with fluorescence densitometry. Comparison of the analysis time, operating costs, etc., of different methods.

J. Chromatogr. A 754/1-2, 423-430 (1994). Description of HPTLC in the field of water analysis. A short review with 25 references on the analysis of pesticides by classical TLC is given. Explanation of the principle of automated multiple development (AMD) technique, with a separation number about three times higher than in classical TLC. The focusing effect, the gradient development from polar to unpolar, the increasing migration distances and the universal gradient are described. The strategy of the whole procedure which became a German standard is demonstrated from sample preparation (solid-phase extraction), screening, identification to final confirmation of positive results. With only one HPTLC plate up to 720 analytical answers can be given, that means 6 different standard mixtures of 10 pesticides each are applied on one plate together with twelve samples (screening of 12 samples for these 60 pesticides gives 720 analytical answers). Common gradients and separations of pesticide mixtures, as well as water samples containing pesticides are presented.

CBS 84, 14-15 (2000). HPTLC of wine samples on silica gel with diisopropyl ether - formic acid - water 16:3:1 with chamber saturation. Detection by heating at 110 °C for 15 min, followed by cooling to room temperature and dipping in bromophenol blue reagent. Quantitative determination of malic, lactic, and succinic acid by absorbance measurement at 430 nm.

J. AOAC Int. 86, 602-611 (2003). Review of the advances in the applications of TLC and HPTLC for the separation, detection, identification, and determination of pesticides, other agrochemicals, and related compounds for the period 2000-2002. Analyses are described for a variety of samples, such as food, biological, and environmental samples, and for residues of pesticides of various types, including insecticides, herbicides, and fungicides, belonging to different chemical classes. 88 references are included for residue analysis, hydrophobicity studies, and the use of TLC and thin-layer radio-chromatography for studies of pesticide metabolism, degradation, uptake, and related topics.