J. Agric. Food Chem. 35, 100-1 05 (1987). Analytical and preparative TLC separation of fenvalerate and metabolites on silica 60 F 254 in one- and two-dimensional modes with 7 different solvent systems, e.g. hexane - toluene - acetic acid 3:15:2 and toluene - ether 10:1.

J. Liquid Chromatogr. 15, 2941-2957 (1992). Reverse-phase TLC of atrazine and associated metabolites on RP-18 with methanol - water 7:3. Quantification by densitometry at 222 nm. Detection limit 20 ng.

Asian Journal of Chemistry 23(5), 2011-2013 (2011). Methods are reported for determination of organophosphorus pesticides using TLC-cholinesterase inhibition as well as GC-FID. The powdered rice sample was initially extracted with ethyl acetate. The extract was cleaned up by GPC, eluted with cyclohexane - ethyl acetate 1:1, evaporated, and taken up in acetone. This extract was analysed by TLC on silica gel with ethyl acetate to a developing distance of 10-12 cm. After development the plate was air dried, exposed to bromine vapors, sprayed with enzyme solution and incubated at 37 °C for 30 min and sprayed with the reagent. White spots appeared against bluish-red background. The sample was also analysed by GC and the GC method was very sensitive. However, the TLC method is recommended for preliminary screening of samples.

Acta Alimentaria 16, 29-43 (1967). Twenty-one identified strains of fusarium sp. were examined for their ability to produce F-2 and T-2 toxin on sterilized, moistened rice and corn grains. The F-2 and T-2 toxin production was estimated by TLC and confirmed by GLC. TLC of F-2 toxin on silica with toluene - ethyl acetate - chloroform 95:55:50 and chloroform - acetone 97:3; after development plates heated for 5 min. at 120 °C, detection of zearalenone by UV 366 and 254 nm. Detection of F-2 toxin by spraying with 1 % 4-methoxy - benzene - diazonium- fluoroborate and heating for 10 min at 110 °C. Sensitivity: 0.03 mg/spot. TLC of T-2 toxin on silica with toluene - ethyl acetate - 90 % formic acid 6:3:1; spraying with 20 % sulfuric acid in 96 % ethanol and heating for 10 min at 110 °C, detection by UV at 366 nm. Sensitivity: 0.05 mg/spot.

J.Chinese Herb Med. (Zhongcaoyao) 21, 107-108 (1990). TLC of organophosphorus pesticides on silica with ethyl acetate - hexane 3:2. Detection by EL method. Quantification by densitometry at 272 nm. Detection limits 8 ng.

J. Chromatogr. 704, 540-543 (1995). TLC of dichlorvos and dimethoate on silica gel with n-hexane - acetone - methanol 16:6:1 or with benzene - ethyl acetate - methanol 9:1:1. Selective and sensitive detection by spraying with 2% sodium hydroxide solution followed by 0.5% orcinol solution. Heating at 100°C for 10 min. Detection limit under UV 365 nm of 1 µg and 15 µg per spot for dichlorvos and dimethoate, respectively.

J. Planar Chromatogr. 20, 287-292 (2007). TLC of mancozeb, NaDDC, propineb, ziram, and zineb on cellulose or cellulose impregnated with heavy metal salts with mobile phases prepared from water, n-butyl acetate, isopropanol, and lauryl sulfate. Visualization with iodine vapor. Plates were also coated with cereal flour, and with mixtures of cellulose and cereal flour.

Pest. (Nongyao) 31, 31-32 (1992). TLC of mipcin (= o-cumenylmethylcarbamate) on silica with acetone – ethyl acetate 1:1. Detection by spraying with 1% potassium iodide – ethanol 5:2. Quantification by densitometry at 400 nm.