J. Planar Chromatogr. 2, 262-267, (1989). Preconcentration procedure and HPTLC separation of 13 pesticides (phenylureas, carbamates, triazines, and other N-heterocyclic compounds) using HPTLC, development by a 30-step gradient (methanol - chloroform) using the AMD technique; detection by measuring the UV reflectance at 6 wavelengths ( = 190, 220, 240, 260, 280, and 300 nm). CV ± 2,2% at a concentration range between 20 and 500 ng.

J. Planar Chromatogr. 4, 442-445 (1991). Presentation of a method for the computer-assisted selection of multicomponent solvent systems for the separation of multicomponent solvent systems for the separation of a synthetic product of unknown composition by HPTLC. The method is based on recognition of the order of the spots by comparison of spot area percent, followed by design of the solvent mixture by a statistical optimization method. Excellent agreement has been obtained between predicted data and experimental results.

J. Planar Chromatogr. 7, 435-439 (1994). TLC of plant growth stimulators (5 maleic acid derivatives, 4 succinic acid derivatives, 3 phthalic acid derivatives) on silica with methanol - MEK - benzene - acetic acid (in 7 different proportions) and HPTLC on RP-18 with methanol - water and acetone - water. Detection under UV 254 nm. Detection limits between 1.5 ng/spot (maleic acid derivatives) and 20 ng/spot (succinic and phthalic acid derivatives).

Chinese Anal. Chem. (Fenxi Huaxue) 24, 1134-1138 (1996). TLC on silica with methanol - ethyl acetate 7:3. Detection by exposure to iodine vapor or by spraying with 0.01 mol/L PdCl2. Quantification by coulometric titration.

J. AOAC Int. 82, 561-574 (1999). Advances in the techniques and applications of thin-layer chromatography (TLC) for pesticide analysis published and/or abstracted in the period from mid-1996 through mid-1998 were covered in a separate review (J. Sherma, J. AOAC Int. 82, 48-53 (1999)). The 5 TLC studies reviewed were reported after that review was written.

Part V. J. Planar Chromatogr. 15, 164-168 (2002). Determination of the relationships between Rf values and mobile phase composition for twenty pesticides on e.g. silica gel with heptane and a polar modifier (ethyl acetate, tetrahydrofuran, or dioxane). HPTLC of pesticides (aldrin, prometryn, bifenthrin, bitertanol, chloridazon, iso-chloridazon, desmedipham, diazinon, esfenvalerate, methidathion, metribuzin, dichlobenil, ethiofencarb, ethofumeste, phenmedipham, tri-allate, dichlofluanid, propiconazole, dazomet, metiokarb, metamidofos) on silica gel and on water wettable RP-18, also 2D-TLC on a TLC plate comprising coupled layers of octadecyl silica (reversed-phase) and plain silica gel (normal phase). 2D-TLC with ethyl acetate - n-heptane 1:4 for the first and methanol - water 3:2 for the second direction. Detection under UV 254 nm or by exposure to iodine vapor.

J. Liq. Chromatogr. Relat. Technol. 28, 277-87 (2005). HPTLC of 16 pesticides (propaquizafop, quizalofop-P, triadimefon, tridimenol, fenoxycarb, quinoxyfen, cyromazine, oxyfluorfen, fluoroglycofen, acetochlor, metazachlor, piperonyl butoxide, furalaxyl, pyriproxifen, buprofezin, clofentezine) on silica gel and RP-18; two-dimensional separation on dual plates (3 cm zone of silica gel parallel to RP-18 layers) with 1.) ethyl acetate - diisopropyl ether 2.5:97.5 and 2.) acetonitrile - water 17:3; or methanol - water 4:1. Detection under UV 254 nm.

Proc. Intern. Symposium on TLC with special Emphasis on OPLC, Szeged, 76 (1984). OPLC (OPTLC) of phenbendazole on silica with a) ethyl acetate, b) MEK - propanol - water - chloroform 52:5:3:45. Detection by UV 254 nm. Fluorescence scanning. Detection limit 30 ng/spot.