J. Planar Chromatogr. 22, 235-240 (2009). HPTLC of pesticides (clofentezine, neburon, chlorfenvinphos, lenacyl, trifluralin, thiram, procymidone, flufenoxuron, tralkoxydim, propaquizafop, dinoseb) and water samples (sample preparation by solid phase extraction) on silica gel with ethyl acetate - n-heptane 1:4 and 3:7 in a horizontal chamber. Quantitative determination by diode array densitometry in the range of 200 to 600 nm. The limit of detection was between 40 and 650 ng/spot and the limit of quantification was between 120 and 1920 ng/spot.

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.

J. AOAC Int. 92, 691-697 (2009). HPTLC of dialkyl phosphate standards (dimethyl phosphate, diethyl phosphate, dimethyl thiophosphate, diethyl thiophosphate and dibutyl phosphate as internal standard) on amino phase, prewashed with methanol, with dichloromethane in a twin trough chamber. Quantitative determination by fluorescence measurement at 366/>400 nm. The limit of quantification was between 0.8 and 1.4 ng/zone. Fluorescence enhancement was achieved by dipping the plate into a 50 % solution of paraffin oil in n-hexane, increasing the sensitivity and resulting in an LOQ of 0.5-0.6 ng/zone.

J. Agric. Food Chem. 34, 79-86 (1986). TLC separation of propetamphos (CE)-O-2-methyl ethyl phosphoramido thioate) and metabolites on silica with hexane - ethanol 95:5, benzene - ethyl acetate - hexane 1:4:2, acetonitrile - water 95:5, 95:25, etc., after development the plates were cut into strips and radioactivity was measured by LSC. Detection of non-radioactive compounds by UV, by exposure to iodine vapors and/or by spraying with DBQ in cyclohexane with heating at 118 °C for 10 min.

Fres.J.Anal.Chem. 336, 515 (1990). TLC of terbufos and its metabolites terbufos sulfoxide, terbufos sulfone, terbufos-O-sulfoxide, and terbufos-O-sulfone on silica with toluene - acetone 85:15. Sensitive detection of terbufos by derivatization with PdCl and by exposure to iodine vapor. For the metabolites, an enzymatic procedure allows more sensitive detection.

J. Planar Chromatogr. 11, 90-93 (1998). Determination of the relationships between Rf values and mobile phase composition for eleven moderately polar pesticides in systems of the type silica + nonpolar or weakly polar diluent (heptane or chloroform) - polar modifier (ethyl acetate, tetrahydrofuran, dioxane, or acetone). TLC of atrazine, chlorfenvinphos, methoxychlor, carbaryl, alachlor, bromopropylate, captan, dinoseb, diuron, fenchlorphos, fenitrothion on silica gel with e.g. ethyl acetate - heptane. Detection under UV at 254 nm or 365 nm or by exposure to iodine vapor. Useful information for isolation of the pesticides tested.

Magyar Kémiai Folyóirat 97, 225-228 (1991). TLC of N-methyl-(2-isopropyloxy-phenyl)-carbamate on silica or C-18 silica with hexane - ethyl acetate 4:1, hexane - ethyl acetate - acetone 8:2:2 or methanol - water 3:1. Detection by spraying with 6% ethanolic KOH, 4-nitrobenzene-diazonium fluoroborate with 10% polyethyleneglykol in ethanol.