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.

J. Chromatogr. A 754, 3-16 (1996). A review with 117 references on the determination of methylcarbamate residues in water, soil and plant tissues by using TLC as well as HPLC, GC and SFC with various sample pretreatment procedures and detection methods.

Chin. J. Anal. Lab. (Fenxi Shiyanshi) 20 (2), 39-41 (2001). TLC on silica gel with methanol - ethyl acetate - petroleum ether (60-90°C) 5:10:4. Detection under UV 254 nm. Quantitation by spectrophotometry after elution. Detection limit 0.08 mg/mL.

J. Planar Chromatogr. 18, 248-251 (2005). TLC of 14C-labeled pesticides (metribuzin, linuron, isopropylanilin, bentazon, metamitron, MCPA, mecoprop, isoproturon, MD-IPU, diuron, diazinon, simazine, 2,4-dichlorophenoxyacetic acid, chlorsulfuron, metsulfuron-methyl, thifensulfuron-methyl, tribenuron-methyl, triazinamine, methyl-triazinamin, terbutylazine) on silica gel and RP-18 in horizontal chamber with isopropanol - ethyl acetate - acetic acid 30:70:0.1, isopropanol - ethyl acetate - hexane - acetic acid 10:40:50:0.1 and 30:40:30:0.1, isopropanol - hexane - acetic acid 30:70:0.1, hexane - diethyl ether 1:1, methanol - water 3:2, methanol - water - acetic acid (pH 3) 3:2, methanol - water - ethyl acetate 13:5:2, acetonitrile - water 3:2, acetonitrile - water -phosphoric acid (pH <2) 1:9. After development the plates were exposed to a phosphor screen for 24 hours and analyzed by use of a Cyclone storage phosphor system.

J. Planar Chromatogr. 25, 117-121 (2012). HPTLC of octachlorodipropyl ether on silica gel with toluene - acetic acid - water 20:20:1. Detection by spraying with 2 N alcoholic potassium hydroxide, followed by heating at 120 °C for 30 min, overspraying with 1 % silver nitrate in 30 % nitric acid and then exposed to unfiltered UV illumination for approximately 15 min. Quantitative determination by absorbance measurement at 399 nm. The hRf values of octachlorodipropyl ether and photodegradation products O1 and O2 were 93, 19 and 82, respectively.

(Determination of chlorinated hydrocarbon residues in food products originating from vegetables.) (Hungarian). MSZ (Hungarian Norm) 14475/1-87, p. 8. TLC of -HCH, p,p’DDT and metabolites on silica with n-heptan with 0.3% ethanol. Visualization with silver nitrate-2-phenoxyethanol. Detection limit: 0.01 µg; recovery: 75-90%.

J. Agric. Food Chem. 46, 1217-1223 (1998). TLC of (2,4-dichlorophenoxy)acetic acid, 2,4-dichlorophenol, and 2,4-dichloroanisol on silica gel with benzene - hexane - acetone 25:25:1. Detection by autoradiography.

J. Planar Chromatogr. 27, 66-68 (2014). TLC of profenofos in visceral tissues on silica gel with n-hexane - acetone 4:1. Detection by spraying with 10 % sodium hydroxide solution and after 5-10 min, spraying with diazotized sulfanilic acid reagent (0.5 g sulfanilic acid and 1 g sodium nitrite in 100 mL of 10 % v/v hydrochloric acid). The hRF value for profenofos was 45.