A survey. J. High Resol. Chromatogr. 5, 476-4 82 (1982). TLC of polynuclear aromatics, bile acid conjugates, phenolic compounds, sulfonamides, phenothiazines, barbiturates, phthalate esters, steroidal hormones on RP-2, -8, -18 with methanol - water mixtures or acetonitrile-water.

Chromatography the State of the Art, Vol II, Akademiai Kiado, Budapest, 1985, 535-590. Review with 126 references. General aspects: 1. Ion exchangers in TLC: impregnation methods in TLC, solid ion-exchangers in TLC; 2. Pretreatment and development; 3. Application of samples; 4. Visualization and quantitative evaluation of thin-layer ion-exchange chromatograms; information on the separation of antibiotics, sulfonamides and other chemotherapeutic compounds.

Section II. Thin-layer chromatographic densitometry and factors influencing quantitative analysis.) Introduction of TLC densitometry the modes of measurement, comparison of the features of 6 different densitometers, calibration methods and the factors influencing quantitative results..

VCH Verlagsges., Weinheim - Basel - Cambridge - New York, 1989. (German; English issue see page 53) 468 pages, 154 illustrations, 1360 literature references. See detailed review on page 52 CBS-64.

CBS Publishers & Distributors)*, Delhi 110032 (India), 1992, 244 pages. Detailed TLC procedures for the separation and identification of more than 170 drug formulations in divergent combinations, arranged in 17 classification systems are described; predominantly silica is used with numerous solvent systems, two of them designated universal systems as these are suitable for more than 100 drug formulations; solvent system I = benzene)** - methanol - NH3 75:25:0.25; system II = butyl acetate - formic acid - chloroform 60:40:20. UV and iodine vapors were used for visualization in most cases. Recommendations for setting up a TLC laboratory are given in the introduction. (Remarks by the editor: )* CBS Publishers have nothing to do with the CAMAG CBS, the name is coincidental. )** Benzene, which is banned from laboratory use in most countries, may be substituted with toluene.)

Chinese J. Pharm. Anal. (Yaowu Fenxi Zazhi) 15 (5), 48-60 (1995). A review with 152 references on the status of the methodology for the analysis of the title drugs, including TLC methods which are simple, fast and sensitive.

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.

Anal. Chem. 2000 72, 9R-25R (2000). Selective review of the literature of TLC and HPTLC in CA from Nov. 1, 1997 to Nov. 1, 1999, divided into General Considerations (history, books, reviews; experiments; theory and fundamental studies, chromatographic systems (stationary and mobile phases;); apparatus and techniques; detection and identification of separated zones; quantitative analysis; preparative layer chromatography and radio-thin-layer chromatography) and applications (acids and phenols; amino acids, peptides, and proteins; antibiotics; bases and amines; carbohydrates; dyes and pigments, hydrocarbons; lipids; pesticides; pharmaceuticals, drugs, and alkaloids; purines, pyrimidines, and nucleic acids; steroids; surfactants and detergents; toxins; vitamins; miscellaneous organic compounds; inorganic and metal organics).