J. AOAC Int. 77, 1179-1183 (1994). TLC of fusarochromanone on silica with chloroform - methanol - NH3 45:5:1 or 40:10:1. Detection under UV 254 (limit 5 ng) of UV 366 nm (Detection limit 3 ng). Fusarochromanone gives a positive (turns pink) ninhydrin reaction; it turns yellow-green when sprayed with either 20% sulfuric acid in methanol or p-anisaldehyde solution. Detection limit of these 3 colorimetric reagents is 250 ng. Fusarochromanone is relatively unstable when exposed to fluorescent light; standards should be stored in the dark in the freezer.

J. Chromatogr. A 815, 75-92 (1998). A review with 135 references on TLC, HPLC and other methods for monitoring studies of ochratoxin A in food chain and for studies dealing with the OA carryover, including sampling, sample storage, extraction, spiking procedures, clean-up, detection, determination and confirmation.

J. Planar Chromatogr. 13, 328-332 (2000). OPLC of aflatoxin B1, B2, G1 and G2 on silica gel (TLC and HPTLC plates) with chloroform - toluene - tetrahydrofuran 15:15:1. Quantitation of aflatoxins by densitometry at 365/>436 nm. The validation procedure includes tests on specificity and determination of the retention factor, resolution, asymmetry, linearity, accuracy, precision, detection limit, and quantitation limit of the method according to ICH III/5626/94. The robustness of the procedure was also determined and found to be critically dependent on the type of plate used (TLC or HPTLC).

J. Chromatogr. 248, 483-487 (1982). TLC on silica with chloroform - methanol -25 % NH3 - water 1:4:2:1, or chloroform - methanol -25 % NH3 2:3:2; or 15 % aq. solution of potassium dihydrogen phosphate pH 4.4, or 10 % aq. solution of potassium dihydrogen phosphate pH 4.5. Detection by spraying with ninhydrin reagent and heating at 110 °C for 15 minutes or with 2 % naphthoresorcinol in ethanol followed by 9 N sulfuric acid and heating for 5-10 minutes at 120 °C.

1) Single method for the analysis of tetracyclines on silica gel high performance thin-layer plates. J. Chromatogr. 260, 457-462 (1983). HPTLC of tetracyclines on silica plates predeveloped with a saturated aq. solution of Na EDTA with a) chloroform - methanol -5 % Na EDTA solution 65:20:5, b) isopropanol - ethyl acetate - 5 % aq Na EDTA solution 3:4:7 and c) acetone - 5 % Na EDTA solution 10:1. Detection by UV 365 nm. Quantification by scanning in dual-wavelength mode at 360/600 nm and 450/650 nm. Change of the measurement wavelength enables the determination of overlapping spots.

J. Agric. Food Chem. 31, 420-423 (1983). TLC of gonyautoxin 2, gonyautoxin 3 on silica with tert. butanol - acetic acid - water 2:1:1. Detection by UV 365 nm after spraying with 1 % H2SO4 and heating at 110 °C for 5 minutes.

(Determination of alternaria toxins in fruit and vegetable products.) Z. Lebensm. Unters. Forschung 177, 447-453 (1983).TLC of alternariol, alternariolmonomethylether, altenuene, altertoxin I on silica with a) chloroform - methanol - acetic acid 91:8:1, b) ethyl acetate - acetic acid 85:15 (two-times development). Detection by UV 366 and 254 nm. Detection limit 30 ng.

J. Planar Chromatogr. 4, 194-198 (1991). Study of the retention behavior of different penicillin and cephalosporin derivatives on silica impregnated with tricaprylmethylammonium chloride (TCMA) by OPLC with eluents containing water and methanol. The basis of retention is hydrophobic interaction, controlled by the surface concentration of TCMA; main advantage: retention is independent of the pH of the eluent.